{"id":4215,"date":"2026-03-20T16:54:53","date_gmt":"2026-03-20T16:54:53","guid":{"rendered":"https:\/\/science.gsfc.nasa.gov\/stella\/?page_id=4215"},"modified":"2026-03-22T18:55:20","modified_gmt":"2026-03-22T18:55:20","slug":"stella-am","status":"publish","type":"page","link":"https:\/\/science.gsfc.nasa.gov\/stella\/instruments\/atmospheric-monitoring\/stella-am\/","title":{"rendered":"STELLA-AM"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"4215\" class=\"elementor elementor-4215\">\n\t\t\t\t<div class=\"elementor-element elementor-element-045dcc2 e-flex e-con-boxed e-con e-parent\" data-id=\"045dcc2\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-09af210 elementor-widget elementor-widget-heading\" data-id=\"09af210\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">STELLA-AM (Atmosphere Monitor)<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e739be elementor-align-left elementor-widget elementor-widget-button\" data-id=\"3e739be\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#build\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-right\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M190.5 66.9l22.2-22.2c9.4-9.4 24.6-9.4 33.9 0L441 239c9.4 9.4 9.4 24.6 0 33.9L246.6 467.3c-9.4 9.4-24.6 9.4-33.9 0l-22.2-22.2c-9.5-9.5-9.3-25 .4-34.3L311.4 296H24c-13.3 0-24-10.7-24-24v-32c0-13.3 10.7-24 24-24h287.4L190.9 101.2c-9.8-9.3-10-24.8-.4-34.3z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Start Building <\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c22f6f1 e-flex e-con-boxed e-con e-parent\" data-id=\"c22f6f1\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-883c08c e-con-full e-flex e-con e-child\" data-id=\"883c08c\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7db8937 elementor-widget elementor-widget-text-editor\" data-id=\"7db8937\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"mb-2 whitespace-pre-wrap\">The STELLA-AM measures and records carbon dioxide concentration, particulate matter in the PM2.5 and PM10 size ranges, barometric pressure, air temperature, humidity, 3-axis magnetic field, and 3-axis acceleration. Data are recorded to a micro-SD card with a time and date stamp in CSV format.<\/p><p class=\"mb-2 whitespace-pre-wrap\">No soldering is required to build the instrument. Components connect with small cables and can be mounted on a piece of cardboard or a paint stirring stick, or enclosed in a 3D-printable housing. All software and 3D geometry files are freely available. The software works automatically with any subset of sensors, making the instrument configurable for different budgets. All components are commercially available, with a complete set costing approximately $180 in 2025 prices.<\/p><p class=\"mb-2 whitespace-pre-wrap\">The STELLA-AM is powered by USB-C and does not require an internal battery, apart from a coin cell to maintain the clock. The housing measures approximately 6x3x1 inches, and the completed instrument weighs 115 g (4 oz).<\/p><p>To\u00a0<strong>build your own STELLA-AM<\/strong>\u00a0download the\u00a0<a href=\"\/stella\/downloads\/\" target=\"_blank\" rel=\"noopener\">STELLA-AM files<\/a> and follow the build steps.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9b18f1a e-con-full e-flex e-con e-child\" data-id=\"9b18f1a\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0e1521a elementor-widget elementor-widget-heading\" data-id=\"0e1521a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">STELLA Atmosphere Instrument Highlights<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d070b1 premium-blog-align-left elementor-widget elementor-widget-premium-addon-blog\" data-id=\"7d070b1\" data-element_type=\"widget\" data-widget_type=\"premium-addon-blog.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t\t\t<div class=\"premium-blog-wrap  premium-blog-list\" data-page=\"4215\">\n\t\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"2\">\r\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-side\">\r\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\r\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-bright-effect\">\r\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"2560\" height=\"1920\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/05\/stockvault-water-drops-on-a-leaf276875-scaled.jpg\" class=\"attachment-full size-full wp-image-1296\" alt=\"green leaf with droplets\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/05\/stockvault-water-drops-on-a-leaf276875-scaled.jpg 2560w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/05\/stockvault-water-drops-on-a-leaf276875-300x225.jpg 300w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/05\/stockvault-water-drops-on-a-leaf276875-1024x768.jpg 1024w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/05\/stockvault-water-drops-on-a-leaf276875-768x576.jpg 768w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/05\/stockvault-water-drops-on-a-leaf276875-1536x1152.jpg 1536w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/05\/stockvault-water-drops-on-a-leaf276875-2048x1536.jpg 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\r\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/space-agriculture-enclosure-system-safe-student-activities-with-accessible-materials\/\" target=\"_blank\"><\/a>\r\n\t\t\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\r\n\r\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"premium-blog-entry-title\">\r\n\t\t\t<a href=\"https:\/\/science.gsfc.nasa.gov\/stella\/space-agriculture-enclosure-system-safe-student-activities-with-accessible-materials\/\" target=\"_blank\">\r\n\t\t\t\t&#8220;The Golden Pathos Theory&#8221; &#8211; Single Plant Testing\t\t\t<\/a>\r\n\t\t<\/h2>\r\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\r\n\t\t\t\r\n\t\t\t\t\t\t\t<span class=\"premium-blog-meta-separator\">\u2022<\/span>\r\n\t\t\t\t<div class=\"premium-blog-post-time premium-blog-meta-data\">\r\n\t\t\t\t\t<i class=\"fa fa-calendar-alt\" aria-hidden=\"true\"><\/i>\r\n\t\t\t\t\t<span>August 23, 2025<\/span>\r\n\t\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\t<\/div>\r\n\t\t\r\n\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\r\n\t\t<p class=\"premium-blog-post-content\">Students test common houseplants as space life-support systems using STELLA-Q2 sensors to measure CO2 consumption. \u2026<\/p>\t\t<\/div>\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\r\n\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"2\">\r\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-side\">\r\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\r\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-bright-effect\">\r\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1041\" height=\"586\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/07\/STELLA_logo_card_Lynn.jpg\" class=\"attachment-full size-full wp-image-3175\" alt=\"Lynn Nichols presenting her work with STELLA logo\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/07\/STELLA_logo_card_Lynn.jpg 1041w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/07\/STELLA_logo_card_Lynn-300x169.jpg 300w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/07\/STELLA_logo_card_Lynn-1024x576.jpg 1024w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/07\/STELLA_logo_card_Lynn-768x432.jpg 768w\" sizes=\"(max-width: 1041px) 100vw, 1041px\" \/>\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\r\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/preparing-tomorrows-stem-workforce-stella-technology-in-education\/\" target=\"_blank\"><\/a>\r\n\t\t\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\r\n\r\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"premium-blog-entry-title\">\r\n\t\t\t<a href=\"https:\/\/science.gsfc.nasa.gov\/stella\/preparing-tomorrows-stem-workforce-stella-technology-in-education\/\" target=\"_blank\">\r\n\t\t\t\tPreparing Tomorrow&#8217;s STEM Workforce: STELLA Technology in Education\t\t\t<\/a>\r\n\t\t<\/h2>\r\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\r\n\t\t\t\r\n\t\t\t\t\t\t\t<span class=\"premium-blog-meta-separator\">\u2022<\/span>\r\n\t\t\t\t<div class=\"premium-blog-post-time premium-blog-meta-data\">\r\n\t\t\t\t\t<i class=\"fa fa-calendar-alt\" aria-hidden=\"true\"><\/i>\r\n\t\t\t\t\t<span>July 21, 2025<\/span>\r\n\t\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\t<\/div>\r\n\t\t\r\n\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\r\n\t\t<p class=\"premium-blog-post-content\">Lynn Nichols now PK-12 Director of Education Technology at Gilman, showcases how NASA's STELLA technology \u2026<\/p>\t\t<\/div>\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\r\n\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"2\">\r\n\t\t\t<div class=\"premium-blog-post-container premium-blog-skin-side\">\r\n\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumb-effect-wrapper\">\r\n\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-container premium-blog-bright-effect\">\r\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1041\" height=\"586\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/07\/STELLA_logo_card_Lynn.jpg\" class=\"attachment-full size-full wp-image-3175\" alt=\"Lynn Nichols presenting her work with STELLA logo\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/07\/STELLA_logo_card_Lynn.jpg 1041w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/07\/STELLA_logo_card_Lynn-300x169.jpg 300w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/07\/STELLA_logo_card_Lynn-1024x576.jpg 1024w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/07\/STELLA_logo_card_Lynn-768x432.jpg 768w\" sizes=\"(max-width: 1041px) 100vw, 1041px\" \/>\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-thumbnail-overlay\">\r\n\t\t\t\t\t\t\t\t<a class=\"elementor-icon\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/bringing-nasa-technology-to-the-classroom-one-educators-mission-to-transform-stem-learning\/\" target=\"_blank\"><\/a>\r\n\t\t\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"premium-blog-content-wrapper \">\r\n\r\n\t\t\t\t\t<div class=\"premium-blog-inner-container\">\r\n\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"premium-blog-entry-title\">\r\n\t\t\t<a href=\"https:\/\/science.gsfc.nasa.gov\/stella\/bringing-nasa-technology-to-the-classroom-one-educators-mission-to-transform-stem-learning\/\" target=\"_blank\">\r\n\t\t\t\tBringing NASA Technology to the Classroom: One Educator&#8217;s Mission to Transform STEM Learning\t\t\t<\/a>\r\n\t\t<\/h2>\r\n\t\t\t\t<div class=\"premium-blog-entry-meta\">\r\n\t\t\t\r\n\t\t\t\t\t\t\t<span class=\"premium-blog-meta-separator\">\u2022<\/span>\r\n\t\t\t\t<div class=\"premium-blog-post-time premium-blog-meta-data\">\r\n\t\t\t\t\t<i class=\"fa fa-calendar-alt\" aria-hidden=\"true\"><\/i>\r\n\t\t\t\t\t<span>July 14, 2025<\/span>\r\n\t\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\t\t<\/div>\r\n\t\t\r\n\t\t\t\t\t<\/div>\r\n\r\n\t\t\t\t\t\t\t<div class=\"premium-blog-content-inner-wrapper\">\r\n\t\t<p class=\"premium-blog-post-content\">Lynn Nichols transforms STEM education using NASA's STELLA instrument, bridging 3D printing, robotics &amp; space \u2026<\/p>\t\t<\/div>\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\r\n\t\t\t\t<\/div>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bbcaa43 e-flex e-con-boxed e-con e-parent\" data-id=\"bbcaa43\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8816774 elementor-widget__width-inherit elementor-widget elementor-widget-premium-addon-image-button\" data-id=\"8816774\" data-element_type=\"widget\" data-widget_type=\"premium-addon-image-button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\n\t\t<a class=\"premium-image-button-none premium-image-button premium-btn-sm premium-image-button-none\" href=\"\/stella\/downloads\/\">\n\t\t\t<div class=\"premium-image-button-text-icon-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg class=\"premium-svg-nodraw premium-drawable-icon e-font-icon-svg e-fas-file-download\" aria-hidden=\"true\" viewBox=\"0 0 384 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224 136V0H24C10.7 0 0 10.7 0 24v464c0 13.3 10.7 24 24 24h336c13.3 0 24-10.7 24-24V160H248c-13.2 0-24-10.8-24-24zm76.45 211.36l-96.42 95.7c-6.65 6.61-17.39 6.61-24.04 0l-96.42-95.7C73.42 337.29 80.54 320 94.82 320H160v-80c0-8.84 7.16-16 16-16h32c8.84 0 16 7.16 16 16v80h65.18c14.28 0 21.4 17.29 11.27 27.36zM377 105L279.1 7c-4.5-4.5-10.6-7-17-7H256v128h128v-6.1c0-6.3-2.5-12.4-7-16.9z\"><\/path><\/svg>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<span >\n\t\t\t\t\t\tDownload STELLA-AM Files\t\t\t\t\t<\/span>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\n\t\t\t\n\t\t\t\n\t\t<\/a>\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-94f63c5 e-flex e-con-boxed e-con e-parent\" data-id=\"94f63c5\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6f48f9a elementor-widget elementor-widget-heading\" data-id=\"6f48f9a\" data-element_type=\"widget\" id=\"build\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Build Your Own STELLA-AM<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6aeed5a elementor-widget elementor-widget-video\" data-id=\"6aeed5a\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/youtu.be\\\/KUAFAM4eSio?si=zhd6F10wDxfsy6-0&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a1cebfe e-flex e-con-boxed e-con e-parent\" data-id=\"a1cebfe\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-851ad2a e-con-full e-flex e-con e-child\" data-id=\"851ad2a\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-296a461 e-n-tabs-mobile elementor-widget elementor-widget-n-tabs\" data-id=\"296a461\" data-element_type=\"widget\" data-settings=\"{&quot;tabs_justify_horizontal&quot;:&quot;center&quot;,&quot;horizontal_scroll&quot;:&quot;disable&quot;}\" data-widget_type=\"nested-tabs.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-tabs\" data-widget-number=\"43426913\" aria-label=\"Tabs. Open items with Enter or Space, close with Escape and navigate using the Arrow keys.\">\n\t\t\t<div class=\"e-n-tabs-heading\" role=\"tablist\">\n\t\t\t\t\t<button id=\"e-n-tab-title-434269131\" class=\"e-n-tab-title\" aria-selected=\"true\" data-tab-index=\"1\" role=\"tab\" tabindex=\"0\" aria-controls=\"e-n-tab-content-434269131\" style=\"--n-tabs-title-order: 1;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tStep 1. Parts Needed\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-434269132\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"2\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-434269132\" style=\"--n-tabs-title-order: 2;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tStep 2. Wiring and Programming Instructions\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-434269133\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"3\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-434269133\" style=\"--n-tabs-title-order: 3;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tStep 3. Build\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t\t<\/div>\n\t\t\t<div class=\"e-n-tabs-content\">\n\t\t\t\t<div id=\"e-n-tab-content-434269131\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-434269131\" data-tab-index=\"1\" style=\"--n-tabs-title-order: 1;\" class=\"e-active elementor-element elementor-element-fef770a e-con-full e-flex e-con e-child\" data-id=\"fef770a\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0c66b25 elementor-arrows-position-inside elementor-pagination-position-outside elementor-widget elementor-widget-image-carousel\" data-id=\"0c66b25\" data-element_type=\"widget\" data-settings=\"{&quot;slides_to_show&quot;:&quot;1&quot;,&quot;navigation&quot;:&quot;both&quot;,&quot;effect&quot;:&quot;slide&quot;,&quot;speed&quot;:500}\" data-widget_type=\"image-carousel.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-image-carousel-wrapper swiper\" role=\"region\" aria-roledescription=\"carousel\" aria-label=\"Image Carousel\" dir=\"ltr\">\n\t\t\t<div class=\"elementor-image-carousel swiper-wrapper swiper-image-stretch\" aria-live=\"polite\">\n\t\t\t\t\t\t\t\t<div class=\"swiper-slide\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"1 of 2\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/STELLA-AM_parts_1200x800.jpg\" alt=\"STELLA-AM parts\" \/><figcaption class=\"elementor-image-carousel-caption\">STELLA-AM parts<\/figcaption><\/figure><\/div><div class=\"swiper-slide\" role=\"group\" aria-roledescription=\"slide\" aria-label=\"2 of 2\"><figure class=\"swiper-slide-inner\"><img decoding=\"async\" class=\"swiper-slide-image\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/STELLA-AM_3D_prints_1200x800.jpg\" alt=\"STELLA-AM 3D prints\" \/><figcaption class=\"elementor-image-carousel-caption\">STELLA-AM 3D prints<\/figcaption><\/figure><\/div>\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-prev\" role=\"button\" tabindex=\"0\">\n\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-left\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M646 125C629 125 613 133 604 142L308 442C296 454 292 471 292 487 292 504 296 521 308 533L604 854C617 867 629 875 646 875 663 875 679 871 692 858 704 846 713 829 713 812 713 796 708 779 692 767L438 487 692 225C700 217 708 204 708 187 708 171 704 154 692 142 675 129 663 125 646 125Z\"><\/path><\/svg>\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-swiper-button elementor-swiper-button-next\" role=\"button\" tabindex=\"0\">\n\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-chevron-right\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M696 533C708 521 713 504 713 487 713 471 708 454 696 446L400 146C388 133 375 125 354 125 338 125 325 129 313 142 300 154 292 171 292 187 292 204 296 221 308 233L563 492 304 771C292 783 288 800 288 817 288 833 296 850 308 863 321 871 338 875 354 875 371 875 388 867 400 854L696 533Z\"><\/path><\/svg>\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"swiper-pagination\"><\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bc742ca elementor-widget elementor-widget-tablepress-table\" data-id=\"bc742ca\" data-element_type=\"widget\" data-widget_type=\"tablepress-table.default\">\n\t\t\t\t\t\n<table id=\"tablepress-18\" class=\"tablepress tablepress-id-18\">\n<thead>\n<tr class=\"row-1\">\n\t<th colspan=\"11\" class=\"column-1\">STELLA-AM Atmosphere Monitor instrument parts list<\/th><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\"><strong>Line <\/strong><\/td><td class=\"column-2\"><strong>Quantity<\/strong><\/td><td class=\"column-3\"><strong>Type of part<\/strong><\/td><td class=\"column-4\"><strong>Part Name<\/strong><\/td><td class=\"column-5\"><strong>Manufacturer<\/strong><\/td><td class=\"column-6\"><strong>Model Number<\/strong><\/td><td class=\"column-7\"><strong>Part Number<\/strong><\/td><td class=\"column-8\"><strong>Material<\/strong><\/td><td class=\"column-9\"><strong>Color change at Z mm<\/strong><\/td><td class=\"column-10\"><strong>Color change at Z mm<\/strong><\/td><td class=\"column-11\"><strong>Note:<\/strong><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\"><strong>1<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Power source required<\/td><td class=\"column-4\">USB-C type power supply and cable<\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\">[-]<\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\"><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\"><strong>2<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Media<\/td><td class=\"column-4\">micro SD card: 8GB or greater<\/td><td class=\"column-5\">SanDisk or Kingston<\/td><td class=\"column-6\">[-]<\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\"><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\"><strong>3<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Electronics<\/td><td class=\"column-4\">microcontroller<\/td><td class=\"column-5\">Adafruit Industries<\/td><td class=\"column-6\">Adalogger RP2040<\/td><td class=\"column-7\">5980<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\"><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\"><strong>4<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Electronics<\/td><td class=\"column-4\">baro\/temp\/humidity sensor<\/td><td class=\"column-5\">Adafruit Industries<\/td><td class=\"column-6\">BME280<\/td><td class=\"column-7\">2652<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">The instrument will work without this sensor but will be missing the relevant data. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\"><strong>5<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Electronics<\/td><td class=\"column-4\">CO2 sensor<\/td><td class=\"column-5\">Adafruit Industries<\/td><td class=\"column-6\">SCD-41<\/td><td class=\"column-7\">5190<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">SCD-41 is higher accuracy than SCD-40 which is $5 cheaper. Both will work. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\"><strong>6<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Electronics<\/td><td class=\"column-4\">particulates sensor<\/td><td class=\"column-5\">Adafruit Industries<\/td><td class=\"column-6\">PMSA003I<\/td><td class=\"column-7\">4632<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">The instrument will work without this sensor but will be missing the relevant data. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\"><strong>7<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Electronics<\/td><td class=\"column-4\">real time clock module<\/td><td class=\"column-5\">Adafruit Industries<\/td><td class=\"column-6\">PCF8523<\/td><td class=\"column-7\">5189<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\"><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\"><strong>8<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Electronics<\/td><td class=\"column-4\">magnetometer accelerometer sensor<\/td><td class=\"column-5\">Adafruit Industries<\/td><td class=\"column-6\">LSM303AGR<\/td><td class=\"column-7\">4413<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">The instrument will work without this sensor but will be missing the relevant data. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\"><strong>9<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Electronics<\/td><td class=\"column-4\">display, OLED<\/td><td class=\"column-5\">Adafruit Industries<\/td><td class=\"column-6\">1.12\u201d 128x128<\/td><td class=\"column-7\">5297<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\"><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-12\">\n\t<td class=\"column-1\"><strong>10<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Electronics<\/td><td class=\"column-4\">button module, red<\/td><td class=\"column-5\">SparkFun Electronics<\/td><td class=\"column-6\">BOB\u201415932<\/td><td class=\"column-7\">BOB\u201415933<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\"><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-13\">\n\t<td class=\"column-1\"><strong>11<\/strong><\/td><td class=\"column-2\">2<\/td><td class=\"column-3\">Wiring<\/td><td class=\"column-4\">Qwiic\/ QT cable 100mm<\/td><td class=\"column-5\">Adafruit or SparkFun<\/td><td class=\"column-6\">Qwiic JST SH 4 pin 100 mm<\/td><td class=\"column-7\">4210 or PRT-14427<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\"><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-14\">\n\t<td class=\"column-1\"><strong>12<\/strong><\/td><td class=\"column-2\">5<\/td><td class=\"column-3\">Wiring<\/td><td class=\"column-4\">Qwiic\/ QT cable 50mm<\/td><td class=\"column-5\">Adafruit or SparkFun<\/td><td class=\"column-6\">Qwiic JST SH 4 pin 50 mm<\/td><td class=\"column-7\">4399 or PRT-14426<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\"><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-15\">\n\t<td class=\"column-1\"><strong>13<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">3D print<\/td><td class=\"column-4\">AM top housing<\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\"><\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">PLA<\/td><td class=\"column-9\">0.8<\/td><td class=\"column-10\">1.6<\/td><td class=\"column-11\">Use file orientation to print. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-16\">\n\t<td class=\"column-1\"><strong>14<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">3D print<\/td><td class=\"column-4\">AM bottom housing<\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\"><\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">PLA<\/td><td class=\"column-9\">1.4<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">Use file orientation to print. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-17\">\n\t<td class=\"column-1\"><strong>15<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">3D print<\/td><td class=\"column-4\">A. baro CO2 retainer<\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\"><\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">PLA<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">Use file orientation to print. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-18\">\n\t<td class=\"column-1\"><strong>16<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">3D print<\/td><td class=\"column-4\">C. clock retainer<\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\"><\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">PLA<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">Use file orientation to print. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-19\">\n\t<td class=\"column-1\"><strong>17<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">3D print<\/td><td class=\"column-4\">D. processor retainer<\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\"><\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">PLA<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">Use file orientation to print. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-20\">\n\t<td class=\"column-1\"><strong>18<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">3D print<\/td><td class=\"column-4\">E. mag accel retainer<\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\"><\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">PLA<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">Use file orientation to print. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-21\">\n\t<td class=\"column-1\"><strong>19<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">3D print<\/td><td class=\"column-4\">F. button retainer<\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\"><\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">PLA<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">Use file orientation to print. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-22\">\n\t<td class=\"column-1\"><strong>20<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">3D print<\/td><td class=\"column-4\">G. screen holder<\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\"><\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">PLA<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">Use file orientation to print. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-23\">\n\t<td class=\"column-1\"><strong>21<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">3D print<\/td><td class=\"column-4\">lamp optic cc<\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\"><\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">clear PLA<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">Use file orientation to print. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-24\">\n\t<td class=\"column-1\"><strong>22<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">3D print<\/td><td class=\"column-4\">wall mount: optional <\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\"><\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">PLA<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">Use file orientation to print. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-25\">\n\t<td class=\"column-1\"><strong>23<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">3D print<\/td><td class=\"column-4\">battery holder: optional<\/td><td class=\"column-5\">[-]<\/td><td class=\"column-6\"><\/td><td class=\"column-7\">[-]<\/td><td class=\"column-8\">PLA<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">Use file orientation to print. <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-26\">\n\t<td class=\"column-1\"><strong><\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Battery<\/td><td class=\"column-4\">Battery<\/td><td class=\"column-5\">Adafruit<\/td><td class=\"column-6\">CR1220<\/td><td class=\"column-7\">380<\/td><td class=\"column-8\">[-]<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">Put in RTC  <\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-27\">\n\t<td class=\"column-1\"><strong>24<\/strong><\/td><td class=\"column-2\">1<\/td><td class=\"column-3\">Battery: NOT FOR FLIGHT<\/td><td class=\"column-4\">Battery: optional<\/td><td class=\"column-5\">Adafruit Industries<\/td><td class=\"column-6\">Battery 3.7 V 500 mAh<\/td><td class=\"column-7\">1578<\/td><td class=\"column-8\">Lithium Ion Polymer<\/td><td class=\"column-9\">[-]<\/td><td class=\"column-10\">[-]<\/td><td class=\"column-11\">do not use primary (alkaline) batteries<\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-28\">\n\t<td class=\"column-1\"><strong><\/strong><\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td><td class=\"column-11\"><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-29\">\n\t<td class=\"column-1\"><strong><\/strong><\/td><td class=\"column-2\"><\/td><td class=\"column-3\"><\/td><td class=\"column-4\"><\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td><td class=\"column-7\"><\/td><td class=\"column-8\"><\/td><td class=\"column-9\"><\/td><td class=\"column-10\"><\/td><td class=\"column-11\"><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<tr class=\"row-30\">\n\t<td class=\"column-1\"><strong><\/strong><\/td><td class=\"column-2\"><strong><\/strong><\/td><td class=\"column-3\"><strong>Spreadsheet version:<\/strong><\/td><td class=\"column-4\"><strong>20250423<\/strong><\/td><td class=\"column-5\"><strong><\/strong><\/td><td class=\"column-6\"><strong><\/strong><\/td><td class=\"column-7\"><strong><\/strong><\/td><td class=\"column-8\"><strong><\/strong><\/td><td class=\"column-9\"><strong><\/strong><\/td><td class=\"column-10\"><strong><\/strong><\/td><td class=\"column-11\"><strong>parts cost as of 2025 April <\/strong><\/td><td class=\"column-12\"><\/td><td class=\"column-13\"><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-18 from cache -->\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-434269132\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-434269132\" data-tab-index=\"2\" style=\"--n-tabs-title-order: 2;\" class=\" elementor-element elementor-element-1d3f9e3 e-con-full e-flex e-con e-child\" data-id=\"1d3f9e3\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-626c73f elementor-widget elementor-widget-text-editor\" data-id=\"626c73f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 1: Connect Components for Initial Testing<\/strong><\/p><p>Connect the sensors in this order using the small cables:<\/p><ol><li>Microprocessor\u00a0\u2192\u00a0Time Clock \u2013 insert CR1220 battery<\/li><li>Time Clock\u00a0\u2192\u00a0Button<\/li><li>Button\u00a0\u2192\u00a0Display<\/li><\/ol><p>Large cables:<\/p><ol start=\"4\"><li>Display\u00a0\u2192\u00a0Magnetometer<\/li><li>Magnetometer\u00a0\u2192\u00a0Particulates<\/li><\/ol><p>Small cables:<\/p><ol start=\"6\"><li>Particulates\u00a0\u2192\u00a0CO2<\/li><li>CO2\u00a0\u2192\u00a0Barometer\u00a0<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-00685e2 elementor-widget elementor-widget-text-editor\" data-id=\"00685e2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 2: Install CircuitPython<\/strong><\/p><ol><li>Hold down the\u00a0<strong>BOOT button<\/strong>\u00a0on the RP2040 microprocessor while connecting it to your computer via USB-C<\/li><li>The device will appear as an\u00a0<strong>RP1-RP2 drive<\/strong><\/li><li>Drag and drop the\u00a0<strong>UF2 file\u00a0<\/strong>onto the drive (replace any existing files)<\/li><li>The device will reboot and appear as\u00a0<strong>CircuitPy drive<\/strong>\u00a0<\/li><li>\u00a0<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13c3c98 elementor-widget elementor-widget-image\" data-id=\"13c3c98\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"843\" height=\"410\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/RP2040_Boot-1024x498.jpg\" class=\"attachment-large size-large wp-image-4225\" alt=\"microprocessor boot button\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/RP2040_Boot-1024x498.jpg 1024w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/RP2040_Boot-300x146.jpg 300w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/RP2040_Boot-768x373.jpg 768w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/RP2040_Boot-1536x747.jpg 1536w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/RP2040_Boot-2048x996.jpg 2048w\" sizes=\"(max-width: 843px) 100vw, 843px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-71a02e0 elementor-widget elementor-widget-text-editor\" data-id=\"71a02e0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 3: Install Software Libraries<\/strong><\/p><ol><li>Once the\u00a0<strong>CircuitPy drive<\/strong>\u00a0appears, drag and drop the\u00a0<strong>code.py and lib folder\u00a0<\/strong>onto the drive<\/li><li>Go to your test codes folder and drag the\u00a0<strong>code.py<\/strong>\u00a0file for the clock onto the drive\u00a0<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-23d29de elementor-widget elementor-widget-text-editor\" data-id=\"23d29de\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 4: Set the Real-Time Clock<\/strong><\/p><ol><li>Navigate to\u00a0<strong>time.is\/UTC<\/strong>\u00a0to check the current UTC time<\/li><li>Open your code editor and open the\u00a0<strong>serial monitor<\/strong><\/li><li>Set the time in UTC format<ul><li><strong>Tip:<\/strong>\u00a0Add 5-10 seconds to the current time to account for saving delays<\/li><\/ul><\/li><li>Save the time settings and verify it saved correctly<\/li><li>Check the time multiple times to ensure accuracy<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2cd47e4 elementor-widget elementor-widget-text-editor\" data-id=\"2cd47e4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 5: Install Main Operating Code<\/strong><\/p><ol><li>From your\u00a0<strong>code and libraries<\/strong>\u00a0folder, drag\u00a0<strong>code.py<\/strong>\u00a0into the CircuitPy drive<\/li><li>Make sure to overwrite any other code that was previously there<\/li><li>The STELLA-AM should boot up and the screen should display data<\/li><li>Test to ensure everything lights up properly\u00a0<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-434269133\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-434269133\" data-tab-index=\"3\" style=\"--n-tabs-title-order: 3;\" class=\" elementor-element elementor-element-3a08a1a e-con-full e-flex e-con e-child\" data-id=\"3a08a1a\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4b770b1 elementor-widget elementor-widget-text-editor\" data-id=\"4b770b1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 7: Install the Time Clock (Most Difficult Component)<\/strong><\/p><ol><li>Locate the retainer marked for the clock (retainers have letters marking their positions)<\/li><li>Clean up the retaining bar with an exacto knife if needed for proper fit<\/li><li>Slide the time clock into its retainer<\/li><li>Make sure it fits snugly but don&#8217;t push too hard<\/li><li>The bar should slide in easily once properly cleaned<\/li><li>Trim any rough edges if necessary\u00a0<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-71961c3 elementor-widget elementor-widget-text-editor\" data-id=\"71961c3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 8: Install Microprocessor<\/strong><\/p><ol><li>Flip the housing with the long side down<\/li><li>Insert the microprocessor into its designated retainer<\/li><li>Ensure it sits nice and snug (no need to push down too hard)\u00a0<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a710610 elementor-widget elementor-widget-text-editor\" data-id=\"a710610\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 9: Install Particulate Sensor<\/strong><\/p><ol><li>Slide the particulate sensor under its retainer<\/li><li>Snap it into place<\/li><li>The particulate sensor helps hold the time clock bar in position\u00a0<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7dcb665 elementor-widget elementor-widget-text-editor\" data-id=\"7dcb665\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 10: Install CO2 Sensor<\/strong><\/p><ol><li>Curl the wire slightly for better wire management<\/li><li>Insert the CO2 sensor into its retainer<\/li><li>Tuck it right in next to the barometer position\u00a0<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c66e622 elementor-widget elementor-widget-text-editor\" data-id=\"c66e622\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 11: Install Barometer<\/strong><\/p><ol><li>Place the barometer in its retainer next to the CO2 sensor<\/li><li>They should sit side by side<\/li><li>Get the retaining clip and install it from side to side<\/li><li>The clip holds both the CO2 and barometer sensors in place<\/li><li>Give it a little nudge to ensure both are held securely\u00a0<\/li><\/ol><p><strong>Step 12: Install Magnetometer<\/strong><\/p><ol><li>The magnetometer has its own dedicated clip<\/li><li>Pop the magnetometer into its retainer with the clip\u00a0<\/li><\/ol><p><strong>Step 13: Install Button<\/strong><\/p><ol><li>Make sure the button orientation is correct before installing<\/li><li>Place the button in its retainer<\/li><li>Clip the button down with its retaining clip\u00a0<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-daaadda elementor-widget elementor-widget-text-editor\" data-id=\"daaadda\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 14: Wire Management and Screen Installation<\/strong><\/p><p><strong>Note:<\/strong> Wire length can be an issue. You may need to rearrange wires for proper fit.<\/p><ol><li>If needed, pull out the particulate sensor temporarily<\/li><li>Rearrange wires to get more length for the screen connection<\/li><li>Reinstall the particulate sensor and button<\/li><li>Wrap and organize the wires neatly<\/li><li>Ensure the screen has adequate wire length and clearance\u00a0<\/li><\/ol><p><strong>Step 15: Install the Display Screen<\/strong><\/p><ol><li>Insert the screen into the top lid\/housing<\/li><li>Slide the retaining door down to secure it<\/li><li>Verify everything fits properly<\/li><li>Tuck the wires back into the housing<\/li><li>Check that all components are properly positioned\u00a0<\/li><\/ol><p><strong>Step 16: Close the Housing<\/strong><\/p><ol><li>Verify all wires are properly tucked in<\/li><li>Snap the top and bottom housings together<\/li><li>Ensure all clips engage properly\u00a0<\/li><\/ol><p><strong>Step 17: Install the Translucent Window<\/strong><\/p><ol><li>Place the 3D printed translucent lamp window into position<\/li><li>This allows you to see indicator lights while protecting the components\u00a0<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-83adcbf elementor-widget elementor-widget-image\" data-id=\"83adcbf\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/STELLA-AM_inside-768x1024.jpg\" class=\"attachment-medium_large size-medium_large wp-image-4234\" alt=\"Completed STELLA-AM instrument\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/STELLA-AM_inside-768x1024.jpg 768w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/STELLA-AM_inside-225x300.jpg 225w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/STELLA-AM_inside-1152x1536.jpg 1152w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/STELLA-AM_inside-1536x2048.jpg 1536w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/03\/STELLA-AM_inside-scaled.jpg 1920w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-82c3f94 elementor-widget elementor-widget-text-editor\" data-id=\"82c3f94\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Step 18: Final Boot and Testing<\/strong><\/p><ol><li>Connect the USB-C power cable<\/li><li>The instrument should boot up automatically<\/li><li>Verify the screen displays data properly<\/li><li>Check that all sensors are reporting values<\/li><li>Confirm data is being recorded to the micro-SD card<\/li><\/ol><p><strong>Congratulations! You&#8217;ve successfully built a STELLA-AM! <\/strong><\/p><p><strong>Troubleshooting Tips<\/strong><\/p><ul><li><strong>Wire length issues:<\/strong>\u00a0Rearrange wire connections or carefully extend wire routing<\/li><li><strong>Tight 3D print fits<\/strong><strong>:<\/strong>\u00a0Use an exacto knife to clean up edges and support material<\/li><li><strong>Screen clearance:<\/strong>\u00a0Adjust wire positioning and ensure proper seating in the top housing<\/li><li><strong>Component retention:<\/strong>\u00a0Ensure all clips are properly engaged and retainers are clean<\/li><\/ul><p><strong>Important Notes<\/strong><\/p><ul><li>The instrument is modular &#8211; you can use any subset of sensors if working with a limited budget<\/li><li>All components are commercially available<\/li><li>Power: USB-C (no internal battery except coin cell for clock)<\/li><li>Data format: CSV files with time\/date stamps on micro-SD card<\/li><li>Housing dimensions: approximately 6&#8243; x 3&#8243; x 1&#8243;<\/li><li>Total weight: 115g (4 oz)<\/li><\/ul><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d869536 e-flex e-con-boxed e-con e-parent\" data-id=\"d869536\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>The STELLA-AM is a compact, affordable, and easy-to-build atmospheric monitoring instrument that measures carbon dioxide concentration, PM2.5 and PM10 particulates, barometric pressure, air temperature, humidity, 3-axis magnetic field, and 3-axis acceleration. All data are time-stamped and recorded to a micro-SD card in a standard CSV format for easy analysis.<\/p>\n","protected":false},"author":2,"featured_media":4216,"parent":2301,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","footnotes":""},"class_list":["post-4215","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>STELLA-AM - STELLA<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/instruments\/atmospheric-monitoring\/stella-am\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"STELLA-AM - STELLA\" \/>\n<meta property=\"og:description\" content=\"The STELLA-AM is a compact, affordable, and easy-to-build atmospheric monitoring instrument that measures carbon dioxide concentration, PM2.5 and PM10 particulates, barometric pressure, air temperature, humidity, 3-axis magnetic field, and 3-axis acceleration. 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