{"id":748,"date":"2025-05-18T20:29:35","date_gmt":"2025-05-18T20:29:35","guid":{"rendered":"https:\/\/science.gsfc.nasa.gov\/stella\/?page_id=748"},"modified":"2026-03-05T00:28:09","modified_gmt":"2026-03-05T00:28:09","slug":"helio-stella","status":"publish","type":"page","link":"https:\/\/science.gsfc.nasa.gov\/stella\/instruments\/heliophysics\/helio-stella\/","title":{"rendered":"Helio-STELLA"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"748\" class=\"elementor elementor-748\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ba802ba e-flex e-con-boxed e-con e-parent\" data-id=\"ba802ba\" 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-fc61718 elementor-widget elementor-widget-heading\" data-id=\"fc61718\" 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\">Helio-STELLA<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7abf254 elementor-align-left elementor-widget elementor-widget-button\" data-id=\"7abf254\" 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-176c423 e-flex e-con-boxed e-con e-parent\" data-id=\"176c423\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-5ed1e38 e-con-full e-flex e-con e-child\" data-id=\"5ed1e38\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ea8d55f elementor-widget elementor-widget-text-editor\" data-id=\"ea8d55f\" 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>The Helio-STELLA is a specialized member of NASA&#8217;s Science and Technology Education for Land\/Life Assessment instrument family, designed specifically for heliophysics and solar observation.<\/p><p>This innovative handheld device features a spectrometer that measures light across the 415-680nm spectrum, complemented by a UV sensor detecting radiation at 320nm. The instrument&#8217;s distinctive design includes a white ping pong ball diffuser that optimizes light collection from various angles. Assembly requires no soldering\u2014simply connect the components.<\/p><p>The Helio-STELLA displays data on a compact screen, with an intuitive pushbutton interface to cycle through different measurement screens and toggle the reference lamp. The Helio-STELLA makes solar spectroscopy accessible to students, educators, and citizen scientists interested in exploring our sun&#8217;s electromagnetic properties.<\/p><p>To\u00a0<strong>build your own Helio-STELLA<\/strong>\u00a0download the\u00a0<a href=\"\/stella\/downloads\/\" target=\"_blank\" rel=\"noopener\">Helio-STELLA 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-f996536 e-con-full e-flex e-con e-child\" data-id=\"f996536\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ce1d5d9 elementor-widget elementor-widget-heading\" data-id=\"ce1d5d9\" 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\">Helio-STELLA Highlights<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7b5288d premium-blog-align-left elementor-widget elementor-widget-premium-addon-blog\" data-id=\"7b5288d\" data-element_type=\"widget\" data-settings=\"{&quot;scroll_to_offset&quot;:&quot;yes&quot;}\" 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=\"748\" data-pagination=\"true\">\n\t\t\t\t\t<div class=\"premium-blog-post-outer-container\" data-total=\"4\">\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=\"1920\" height=\"1080\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_inst_SEES.png\" class=\"attachment-full size-full wp-image-3749\" alt=\"NASA SEES students using STELLA\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_inst_SEES.png 1920w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_inst_SEES-300x169.png 300w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_inst_SEES-1024x576.png 1024w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_inst_SEES-768x432.png 768w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/STELLA_bg_inst_SEES-1536x864.png 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/>\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\/students-build-ai-powered-drone-for-earth-observation-nasa-sees-internship-journey\/\" target=\"_self\"><\/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\/students-build-ai-powered-drone-for-earth-observation-nasa-sees-internship-journey\/\" target=\"_self\">\r\n\t\t\t\tStudents Build AI-Powered Drone for Earth Observation | NASA SEES Internship Journey\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>January 30, 2026<\/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\">Four high school students leveraged STELLA's accessible design, supportive community, \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=\"4\">\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=\"2048\" height=\"1536\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/NASA_SEES_Mike_STELLA_Drone.jpeg\" class=\"attachment-full size-full wp-image-3614\" alt=\"NASA SEES EarthLens Team and Mike Taylor at AGU 2025\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/NASA_SEES_Mike_STELLA_Drone.jpeg 2048w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/NASA_SEES_Mike_STELLA_Drone-300x225.jpeg 300w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/NASA_SEES_Mike_STELLA_Drone-1024x768.jpeg 1024w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/NASA_SEES_Mike_STELLA_Drone-768x576.jpeg 768w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/NASA_SEES_Mike_STELLA_Drone-1536x1152.jpeg 1536w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/>\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\/nasa-sees-students-showcase-earthlens-stella-integration-at-agu-2025-2\/\" target=\"_self\"><\/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\/nasa-sees-students-showcase-earthlens-stella-integration-at-agu-2025-2\/\" target=\"_self\">\r\n\t\t\t\tNASA SEES Students Showcase EarthLens-STELLA Integration at AGU 2025\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>January 4, 2026<\/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\">NASA STEM Enhancement in Earth Sciences (SEES) interns Nandini Khaneja, \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=\"4\">\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=\"2048\" height=\"1536\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/AAES_pic2.jpeg\" class=\"attachment-full size-full wp-image-3684\" alt=\"AAES\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/AAES_pic2.jpeg 2048w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/AAES_pic2-300x225.jpeg 300w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/AAES_pic2-1024x768.jpeg 1024w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/AAES_pic2-768x576.jpeg 768w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2026\/01\/AAES_pic2-1536x1152.jpeg 1536w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/>\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\/aaes-nasa-stella-eastern-shore\/\" target=\"_self\"><\/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\/aaes-nasa-stella-eastern-shore\/\" target=\"_self\">\r\n\t\t\t\tAAES Brings NASA\u2019s STELLA Remote Sensing to Virginia\u2019s Eastern Shore\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>December 11, 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\">The Aerospace Academy of the Eastern Shore (AAES)\u2014a STEM-focused lab \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<div class=\"premium-blog-footer\">\n\t\t\t\t\t\t<nav class=\"premium-blog-pagination-container\" role=\"navigation\" aria-label=\"Pagination\">\r\n\t\t\t\t<span aria-current=\"page\" class=\"page-numbers current\">1<\/span>\n<a class=\"page-numbers\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-json\/wp\/v2\/pages\/748\/page\/2\/\">2<\/a>\n<a class=\"page-numbers\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-json\/wp\/v2\/pages\/748\/page\/3\/\">3<\/a>\n<a class=\"next page-numbers\" href=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-json\/wp\/v2\/pages\/748\/page\/2\/\">Next \u00bb<\/a>\t\t\t<\/nav>\r\n\t\t\t\t\t<\/div>\n\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a7c164f e-flex e-con-boxed e-con e-parent\" data-id=\"a7c164f\" 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-e826869 elementor-widget__width-inherit elementor-widget elementor-widget-premium-addon-image-button\" data-id=\"e826869\" 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 Helio-STELLA 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-ea7d1fc e-flex e-con-boxed e-con e-parent\" data-id=\"ea7d1fc\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1bc918c e-con-full e-flex e-con e-child\" data-id=\"1bc918c\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-23bf5ba elementor-widget elementor-widget-heading\" data-id=\"23bf5ba\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Helio-STELLA Build Steps<\/h3>\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-55a9e80 e-flex e-con-boxed e-con e-parent\" data-id=\"55a9e80\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-6b455a7 e-con-full e-flex e-con e-child\" data-id=\"6b455a7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2ffab48 e-n-tabs-mobile elementor-widget elementor-widget-n-tabs\" data-id=\"2ffab48\" 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=\"50309960\" 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-503099601\" class=\"e-n-tab-title\" aria-selected=\"true\" data-tab-index=\"1\" role=\"tab\" tabindex=\"0\" aria-controls=\"e-n-tab-content-503099601\" 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-503099602\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"2\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-503099602\" 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. Build Instructions\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-503099603\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"3\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-503099603\" 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. Programming Instructions\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-503099601\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-503099601\" data-tab-index=\"1\" style=\"--n-tabs-title-order: 1;\" class=\"e-active elementor-element elementor-element-b82a31f e-con-full e-flex e-con e-child\" data-id=\"b82a31f\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-871d373 elementor-widget elementor-widget-tablepress-table\" data-id=\"871d373\" data-element_type=\"widget\" data-widget_type=\"tablepress-table.default\">\n\t\t\t\t\t\n<table id=\"tablepress-4\" class=\"tablepress tablepress-id-4\">\n<thead>\n<tr class=\"row-1\">\n\t<th colspan=\"6\" class=\"column-1\">Parts for Helio-STELLA<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\"><strong>Line<\/strong><\/td><td class=\"column-2\"><strong>item<\/strong><\/td><td class=\"column-3\"><strong>qty per unit<\/strong><\/td><td class=\"column-4\"><strong>cost each<\/strong><\/td><td class=\"column-5\"><strong>manufacturer<\/strong><\/td><td class=\"column-6\"><strong>manufacturer #<\/strong><\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\"><strong>1<\/strong><\/td><td class=\"column-2\"><strong>glue stick (3pk)<\/strong><\/td><td class=\"column-3\">0<\/td><td class=\"column-4\">3<\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\"><strong>2<\/strong><\/td><td class=\"column-2\"><strong>colored gel set<\/strong><\/td><td class=\"column-3\">0<\/td><td class=\"column-4\">13<\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\"><strong>3<\/strong><\/td><td class=\"column-2\"><strong>ping pong balls (50)<\/strong><\/td><td class=\"column-3\">0<\/td><td class=\"column-4\">10<\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\"><strong>4<\/strong><\/td><td class=\"column-2\"><strong>colored ping pong balls (28)<\/strong><\/td><td class=\"column-3\">0<\/td><td class=\"column-4\">7<\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\"><strong>5<\/strong><\/td><td class=\"column-2\"><strong>double stick mounting tape 100 pcs<\/strong><\/td><td class=\"column-3\">0<\/td><td class=\"column-4\">6<\/td><td class=\"column-5\"><\/td><td class=\"column-6\"><\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\"><strong>6<\/strong><\/td><td class=\"column-2\"><strong>spectrometer<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">16<\/td><td class=\"column-5\">Adafruit<\/td><td class=\"column-6\">4698<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\"><strong>7<\/strong><\/td><td class=\"column-2\"><strong>UV sensor<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">5<\/td><td class=\"column-5\">Adafruit<\/td><td class=\"column-6\">4831<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\"><strong>8<\/strong><\/td><td class=\"column-2\"><strong>real time clock<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">5<\/td><td class=\"column-5\">Adafruit<\/td><td class=\"column-6\">5189<\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\"><strong>9<\/strong><\/td><td class=\"column-2\"><strong>clock battery<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">1<\/td><td class=\"column-5\">Digikey<\/td><td class=\"column-6\">490-18640-ND<br \/>\n<\/td>\n<\/tr>\n<tr class=\"row-12\">\n\t<td class=\"column-1\"><strong>10<\/strong><\/td><td class=\"column-2\"><strong>display<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">13<\/td><td class=\"column-5\">Adafruit<\/td><td class=\"column-6\">4440<\/td>\n<\/tr>\n<tr class=\"row-13\">\n\t<td class=\"column-1\"><strong>11<\/strong><\/td><td class=\"column-2\"><strong>microcontroller<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">20<\/td><td class=\"column-5\">Digikey<\/td><td class=\"column-6\">DEV-17745<\/td>\n<\/tr>\n<tr class=\"row-14\">\n\t<td class=\"column-1\"><strong>12<\/strong><\/td><td class=\"column-2\"><strong>sd card<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">4<\/td><td class=\"column-5\">Adafruit<\/td><td class=\"column-6\">5250<\/td>\n<\/tr>\n<tr class=\"row-15\">\n\t<td class=\"column-1\"><strong>13<\/strong><\/td><td class=\"column-2\"><strong>i2c button<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">5<\/td><td class=\"column-5\">Digikey<\/td><td class=\"column-6\">BOB-15932<\/td>\n<\/tr>\n<tr class=\"row-16\">\n\t<td class=\"column-1\"><strong>14<\/strong><\/td><td class=\"column-2\"><strong>power switch<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">1<\/td><td class=\"column-5\">Adafruit<\/td><td class=\"column-6\">3064<\/td>\n<\/tr>\n<tr class=\"row-17\">\n\t<td class=\"column-1\"><strong>15<\/strong><\/td><td class=\"column-2\"><strong>battery<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">10<\/td><td class=\"column-5\">Adafruit<\/td><td class=\"column-6\">1781<\/td>\n<\/tr>\n<tr class=\"row-18\">\n\t<td class=\"column-1\"><strong>16<\/strong><\/td><td class=\"column-2\"><strong>usb cable<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">5<\/td><td class=\"column-5\">Digikey<\/td><td class=\"column-6\">DH-20UE0063-NH<\/td>\n<\/tr>\n<tr class=\"row-19\">\n\t<td class=\"column-1\"><strong>17<\/strong><\/td><td class=\"column-2\"><strong>sd card reader<\/strong><\/td><td class=\"column-3\">1<\/td><td class=\"column-4\">7<\/td><td class=\"column-5\">Adafruit<\/td><td class=\"column-6\">5212<\/td>\n<\/tr>\n<tr class=\"row-20\">\n\t<td class=\"column-1\"><strong>18<\/strong><\/td><td class=\"column-2\"><strong>qwiic cables<\/strong><\/td><td class=\"column-3\">6<\/td><td class=\"column-4\">1<\/td><td class=\"column-5\">Adafruit<\/td><td class=\"column-6\">4210<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div id=\"e-n-tab-content-503099602\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-503099602\" data-tab-index=\"2\" style=\"--n-tabs-title-order: 2;\" class=\" elementor-element elementor-element-67441f7 e-con-full e-flex e-con e-child\" data-id=\"67441f7\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-18cfa5a e-flex e-con-boxed e-con e-child\" data-id=\"18cfa5a\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-a68b8f2 e-con-full e-flex e-con e-child\" data-id=\"a68b8f2\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7200539 elementor-widget elementor-widget-text-editor\" data-id=\"7200539\" 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<\/strong> \u2013 Use a small sharp knife to cut the LED trace on the back of the AS7341 spectrometer<br \/>module to disable the green LED on the front. (Fig.<br \/>1.)<\/p><p><strong>Step 2<\/strong> \u2013 Cut a piece of corrugated cardboard to 8.5<br \/>x 11\u201d or a little larger.<\/p><p><strong>Step 3<\/strong> \u2013 Apply glue stick to the back of the layout sheet, then stick the layout sheet to the cardboard.<\/p><p><strong>Step 4<\/strong> \u2013 Cut the two holes marked on the layout sheet, through the sheet and the cardboard.<\/p><p><strong>Step 5<\/strong> \u2013 Apply pieces of double sided foam mounting tape to the back (Kat side) of the modules. Trim the excess.<\/p><p><strong>Step 6<\/strong> \u2013 Stick the modules to their corresponding locations on the layout sheet.<\/p><p><strong>Step 7<\/strong> \u2013 Connect the modules using the cables provided. The cables are built so they only connect in one orientation. Don\u2019t force the connections. (Fig.<br \/>2.)<\/p><p><strong>Step 8<\/strong> \u2013 Slide the micro SD card into the slot on the back of the microcontroller.<\/p><p><strong>Step 9<\/strong> \u2013 Click the power button to turn the Helio-STELLA instrument on. If it\u2019s already on, it\u2019s helpful to turn it off, wait a second, and turn it on again.<\/p><p><strong>Step 10<\/strong> \u2013 The instrument should start up, showing the display screens in the boot cycle. See the operating instructions for more<br \/>information on the screens.<\/p><p><strong>Step 11<\/strong> \u2013 Cut the ping pong ball in half, leaving some tabs for taping it down. (Fig 3.)<\/p><p><strong>Step 12<\/strong> \u2013 Position the ping pong ball over the AS7341 spectral sensor, and tape it down at the edges or on the tabs. Don\u2019t run tape over the surface of the ping pong ball, to keep the tape from affecting the light reaching the sensor.<\/p><p><strong>Step 13<\/strong> \u2013 Place the instrumentin direct sunlight. Leave it running throughout the eclipse!<\/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-362e97c e-con-full e-flex e-con e-child\" data-id=\"362e97c\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6418624 elementor-widget elementor-widget-image\" data-id=\"6418624\" 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\t<a href=\"https:\/\/science.gsfc.nasa.gov\/stella\/\/wp-content\/uploads\/2025\/06\/Helio-STELLA_Build-Instructions_images.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"Helio-STELLA_Build Instructions_images\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTg2MCwidXJsIjoiaHR0cHM6XC9cL3NjaWVuY2UuZ3NmYy5uYXNhLmdvdlwvc3RlbGxhXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDI1XC8wNlwvSGVsaW8tU1RFTExBX0J1aWxkLUluc3RydWN0aW9uc19pbWFnZXMucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"1024\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/Helio-STELLA_Build-Instructions_images-576x1024.png\" class=\"attachment-large size-large wp-image-1860\" alt=\"Helio-STELLA build diagram\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/Helio-STELLA_Build-Instructions_images-576x1024.png 576w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/Helio-STELLA_Build-Instructions_images-169x300.png 169w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/Helio-STELLA_Build-Instructions_images-768x1366.png 768w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/Helio-STELLA_Build-Instructions_images-863x1536.png 863w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/Helio-STELLA_Build-Instructions_images.png 873w\" sizes=\"(max-width: 576px) 100vw, 576px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\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>\n\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-503099603\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-503099603\" data-tab-index=\"3\" style=\"--n-tabs-title-order: 3;\" class=\" elementor-element elementor-element-ae2d70b e-con-full e-flex e-con e-child\" data-id=\"ae2d70b\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-9f3f161 e-flex e-con-boxed e-con e-child\" data-id=\"9f3f161\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-53c8a91 e-con-full e-flex e-con e-child\" data-id=\"53c8a91\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6aa7634 elementor-widget elementor-widget-heading\" data-id=\"6aa7634\" 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<h4 class=\"elementor-heading-title elementor-size-default\">Step 1: Load CircuitPython onto the Microcontroller.<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54d206d elementor-widget elementor-widget-text-editor\" data-id=\"54d206d\" 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>1. Locate the CircuitPython file in the Helio-STELLA\/CircuitPython_uf2, named \u201cadafruit-circuitpythonadafruit_feather_rp2040-en_US-8.0.5.uf2\u201d. The file is specific to this particular microcontroller. The original source of the file is:<br \/><a href=\"https:\/\/circuitpython.org\/board\/sparkfun_thing_plus_rp2040\/\" target=\"_blank\" rel=\"noopener\">https:\/\/circuitpython.org\/board\/sparkfun_thing_plus_rp2040\/<\/a><\/p><p>2. Connect the STELLA to your computer with a USB-C cable.<\/p><p>3. The STELLA should show up in your computer\u2019s drive listing as RP1-RP2. If not disconnect from USB-C then<br \/>hold Boot button (yellow arrow) and plug back in.<\/p><p>4. Drag and drop the UF2 file onto the RP1-RP2 drive. The drive will disappear (and the 2le system will complain<br \/>about not ejecting the drive properly, that\u2019s normal). The drive will reappear as CIRCUITPY. CircuitPython is now active on the STELLA.<\/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-0557be7 e-con-full e-flex e-con e-child\" data-id=\"0557be7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2154e8e elementor-widget elementor-widget-image\" data-id=\"2154e8e\" 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=\"267\" height=\"600\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/17745-SparkFun_Thing_Plus_-_RP2040-04a-y.jpg\" class=\"attachment-large size-large wp-image-1785\" alt=\"microcontroller boot\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/17745-SparkFun_Thing_Plus_-_RP2040-04a-y.jpg 267w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/17745-SparkFun_Thing_Plus_-_RP2040-04a-y-134x300.jpg 134w\" sizes=\"(max-width: 267px) 100vw, 267px\" \/>\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>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e303af1 elementor-widget elementor-widget-heading\" data-id=\"e303af1\" 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<h4 class=\"elementor-heading-title elementor-size-default\">Step 1: Load CircuitPython onto the Microcontroller.<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b119bad e-con-full e-flex e-con e-child\" data-id=\"b119bad\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2641244 e-con-full e-flex e-con e-child\" data-id=\"2641244\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e316aae elementor-widget elementor-widget-text-editor\" data-id=\"e316aae\" 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>1. Locate the CircuitPython file in the Helio-STELLA\/CircuitPython_uf2, named \u201cadafruit-circuitpythonadafruit_feather_rp2040-en_US-8.0.5.uf2\u201d. The file is specific to this particular microcontroller. The original source of the file is:<br \/><a href=\"https:\/\/circuitpython.org\/board\/sparkfun_thing_plus_rp2040\/\" target=\"_blank\" rel=\"noopener\">https:\/\/circuitpython.org\/board\/sparkfun_thing_plus_rp2040\/<\/a><\/p><p>2. Connect the STELLA to your computer with a USB-C cable.<\/p><p>3. The STELLA should show up in your computer\u2019s drive listing as RP1-RP2. If not disconnect from USB-C then<br \/>hold Boot button (yellow arrow) and plug back in.<\/p><p>4. Drag and drop the UF2 file onto the RP1-RP2 drive. The drive will disappear (and the 2le system will complain<br \/>about not ejecting the drive properly, that\u2019s normal). The drive will reappear as CIRCUITPY. CircuitPython is now active on the STELLA.<\/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-79882a2 e-con-full e-flex e-con e-child\" data-id=\"79882a2\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-aa1749d elementor-widget elementor-widget-image\" data-id=\"aa1749d\" 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=\"267\" height=\"600\" src=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/17745-SparkFun_Thing_Plus_-_RP2040-04a-y.jpg\" class=\"attachment-large size-large wp-image-1785\" alt=\"microcontroller boot\" srcset=\"https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/17745-SparkFun_Thing_Plus_-_RP2040-04a-y.jpg 267w, https:\/\/science.gsfc.nasa.gov\/stella\/wp-content\/uploads\/2025\/06\/17745-SparkFun_Thing_Plus_-_RP2040-04a-y-134x300.jpg 134w\" sizes=\"(max-width: 267px) 100vw, 267px\" \/>\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>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c83dd69 elementor-widget elementor-widget-heading\" data-id=\"c83dd69\" 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<h4 class=\"elementor-heading-title elementor-size-default\">Step 2: Setting the Time<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b35f745 elementor-widget elementor-widget-text-editor\" data-id=\"b35f745\" 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>1. Open Mu Editor.<\/p><p>2. Turn on the STELLA, and plug it in to your computer.<\/p><p>3. Click on the Serial button at the top of the Mu window.<\/p><p>4. In the Serial Dialogue panel that opens at the bottom of the Mu window, you should see a line of text that loads every second:<br \/>\u201cMemory B: Used xxxxxx \/Free xxxxxx recording\u2026\u201d<br \/>That tells you that Mu is communicating properly with the STELLA.<\/p><p>5. Open the Finder (on a Mac) (File Explorer in Windows). Find the CIRCUITPY drive in the 2le list. Click on it to load it into the<br \/>window. You should see three items: boot_out.txt, code.py, and a folder called lib.<\/p><p>6. In another Finder\/Explorer window your computer, in the code 2les that you downloaded for programming the STELLA, open the folder called test_codes. In there you should 2nd a folder called real_time_clock, and in that folder you should 2nd a file named code.py<\/p><p>7. Copy that code.py 2le, and paste it onto the CIRCUITPY drive. (Drag and drop should also work) The system will ask you if you want to replace the existing code.py file, and you should choose to Replace.<\/p><p>8. Now go back to the Mu window. In the Serial panel it should be printing out the date and time, once a second. That shows that you have the real time clock test code running on the STELLA. The STELLA screen itself should be either blank, or showing the same printout as you are seeing in the Serial dialogue.<\/p><p>9. Now click on the Load button at the top of the Mu editor. You should see the contents of the CIRCUITPY drive. If you see some other contents, change the choices so that you are looking at the CIRCUITPY drive. (If you save a file somewhere else on the<br \/>computer, it will not run on the STELLA, but Mu doesn\u2019t warn you about that, or offer a Save As button to correct that)<\/p><p>10. In the Load window, select the code.py file on the CIRCUITPY drive, and the real time clock test code should load in the Mu window.<\/p><p>11. There is a line of code that reads \u201cif False\u201d. Change that line to \u201cif True\u201d. It\u2019s important to get the capitalization correct (lower<br \/>case if, upper case T in True).<\/p><p>12. Open a web browser window, and navigate to <a href=\"https:\/\/time.is\/UTC\" target=\"_blank\" rel=\"noopener\">time.is\/UTC<\/a> to get a readout of the current global universal time.<\/p><p>13. A few lines below the \u201cif True\u201d line is a line \u201ct = time.struct_time((\u2026))\u201d That line is a bit out of date by now. Change the line as follows: I\u2019m setting my STELLA as I am writing this, so the line now should read:<br \/>t = time.struct_time(( 2022, 09, 30, 19, 38, 00, 5, -1, -1))<br \/>I\u2019ve set the seconds to 00. 5 designates the day as Friday, and the -1, -1 tells the clock not to set the day of the year or \u2018is daylight<br \/>savings\u2019 field.<\/p><p>14. Wait for the web UTC clock to get within two seconds of the time you\u2019ve put in the time.struct line, and then click the Save button at the top of the Mu editor. That sets the real time clock module on the STELLA. The printout in the Serial panel should show<br \/>the correct time now.<\/p><p>15. To make sure we don\u2019t save again and reset the time incorrectly, change the \u201cif True\u201d line to \u201cif False\u201d. Then save the code again. The Serial printout should continue to show the correct time.<\/p><p>16. Now go back to the Finder\/ Explorer, and locate the STELLA-Q-code-and-libraries folder. . Copy the code.py from there to the CIRCUITPY drive, choose to Replace the existing file, and the STELLA should run the full instrumentation, now with the correct time.<\/p>\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-7157794 elementor-widget elementor-widget-heading\" data-id=\"7157794\" 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<h4 class=\"elementor-heading-title elementor-size-default\">Step 3: Programming Helio-STELLA<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9c3ecdc elementor-widget elementor-widget-text-editor\" data-id=\"9c3ecdc\" 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>Now that you have CircuitPython installed on the microcontroller, you are ready to program your STELLA-AQ.<\/p><p>1. Download the .ZIP 2le that contains the latest software.<\/p><p>2. In the folder labelled \u201ccode and libraries\u201d, copy the folder named \u201clib\u201d, and paste it onto the CIRCUITPY drive. (You can also drag<br \/>and drop it to the CIRCUITPY drive.) You may get a message that the folder already exists; choose to replace the existing folder.<\/p><p>3. From the same \u201ccode and libraries\u201d folder, select the 2le named \u201ccode.py\u201d and copy\/paste or drag\/drop it onto the CIRCUITPY drive. The code should start up (it takes 12 seconds to boot) and you will have a working Helio-STELLA. We\u2019ve written the code so that it is tolerant of missing devices, so even if you haven\u2019t got all the parts it should still work.<\/p><p>4. In the \u201ctest codes\u201d folder, there is a subfolder called \u201creal time clock\u201d. Inside that folder is a file named \u201ccode.py\u201d Copy and paste that file to the CIRCUITPY drive to set the real time clock. Follow the detailed instructions here to set the clock.<\/p><p>5. Once the clock is set, repeat Step 3 to install the STELLA instrument software.<\/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\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Helio-STELLA Start Building The Helio-STELLA is a specialized member of NASA&#8217;s Science and Technology Education for Land\/Life Assessment instrument family, designed specifically for heliophysics and&hellip;<\/p>\n","protected":false},"author":2,"featured_media":681,"parent":2303,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","footnotes":""},"class_list":["post-748","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>Helio-STELLA - 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