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STELLA-RS-B

STELLA-1.2 Remote Sensing-B (RS) Plugin is a sensor module, adding 14-channel spectral sensing (~380nm to 1000nm), thermal infrared temperature measurement, plus temperature, humidity, and pressure sensors for comprehensive Earth observation education. This plugin enables vegetation health monitoring (NDVI), surface temperature mapping—complementing satellite observations by providing ground-based measurement comparisons to help understand what satellites observe from space. By providing spectral bands that align with operational NASA missions, the RS-B plugin breaks down barriers that make remote sensing seem inaccessible, transforming abstract satellite measurements into tangible, hands-on science. STELLA compliments and serves as an educational bridge, creating mission-literate students and professionals who understand and can work with NASA’s Earth observation data. The new RS-B module offers superior reliability through soldered connections instead of connector-only assembly, significantly reducing field failures and improving long-term measurement stability.

Important for beta users: The official STELLA-1.2 requires new housing and is not compatible with beta sensor modules. A conversion video guides beta testers through rewiring for the new platform. 

STELLA-1.2 Highlights

Field team: Bianca Cilento, Kelsey Huelsman, Tierney Cantwell, Emma Ellsworth, and Emeline Daley - STELLA field campaign at Morven, the University of Virginia's research and sustainability site

STELLA field team measured Morven's fields alongside NASA drone and G-LiHT surveys to calibrate the …

STELLA-1.2 modular instrument platform

NASA scientists and engineers at Goddard Space Flight Center, led by Paul Mirel and Mike …

Elisa Mae with STELLA backdrop

At Garden City Community College in Kansas, Assistant Professor Elisa Mai integrated STELLA spectrometers into …

STELLA-RS-B Module Build Steps

Commercial Off The Shelf (COTS) Parts

STELLA -1.2 RS-B.parts list
LineDescriptionURLNotes
1Permaproto board, half sizehttps://www.adafruit.com/product/1609
2magnet connector pair,
RA, 4 positions pins
https://www.adafruit.com/product/5358
3magnet connector pair,
RA, 3 positions pins
https://www.adafruit.com/product/5360
4Lidar - VL53L1Xhttps://www.adafruit.com/product/3967
5spectrometer - AS7343https://www.adafruit.com/product/6477Adafruit format
6Ultrasonic Rangefinder - LV-EZ4https://www.adafruit.com/product/982
7Humidity Sensor HDC3022https://www.adafruit.com/product/5989
8Remote surface
temperature thermometer - MLX90614ESF-BCC-000-TU
https://www.digikey.com/en/products/detail/melexis-technologies-nv/MLX90614ESF-BCC-000-TU/3641019
910kΩ resistorhttps://www.digikey.com/en/products/detail/koa-speer-electronics-inc/MF1-4CCT52R1002B/21679704
1020kΩ resistorhttps://www.digikey.com/en/products/detail/yageo/MFP-25BRD52-20K/2058808
110.1uF capacitorhttps://www.digikey.com/en/products/detail/vishay-beyschlag-draloric-bc-components/K104K15X7RF5TL2/286538
3D Prints
LineDescriptionNotes
1Thermal Spacer
2RS-B Upper Housing
3RS-B Swing Housing0.1mm - black
4magnet coupler alignment
fixture for main body w pins
STELLA RS-B Remote Sensing plugin build list
StepActionWhat value? / NoteWhere? / NoteWhat color?
1print spacersurface thermometer
2Select half size protoboard
3Cut traces29 and 30 between A and B
4Cut traces29 and 30 between B and C
5Cut traces29 and 30 between C and D
6Cut traces29 and 30 between i and J
7Cut traces29 and 30 between H and i
8Select fixtures for spring pinstwo printed partsuse fixtures to locate magnet couplers
9Install magnetic coupler3 position, spring pinsH30, i30, J30
10Install magnetic coupler4 position, spring pinsA30, B30, C30, D30
11Install header pin segment6 position C1-C6
12Install header pin segment6 position G1-G6
13Install header pin segment6 position C12-C17
14Install header pin segment6 position i12-i17
15Install wirepowerA29 and A30, 3V bus (+ below A)+3.3V
16Install wiregroundB29 and B30, GND bus (- below A)GND
17Install wireserial clockC29 and C30, SCL bus (- above J)i2c Serial Clock
18Install wireserial dataE30, SDA bus (+ above J)i2c Serial Data
19Install wiregroundRear: A5, GND bus (- below A)GND
20Install wiregroundRear: A8, GND bus (- below A)GND
21Install wiregroundRear: H6, E5GND
22Install wirepowerRear: A6, 3V bus (+ below A)+3.3V
23Install wirepowerRear: A7, 3V bus (+ below A)+3.3V
24Install wireserial dataRear: E3, SDA bus (+ above J)i2c Serial Data
25Install wireserial clockRear: E4, SCL bus (- above J)i2c Serial Clock
26Install wireserial dataRear: J7, SDA bus (+ above J)i2c Serial Data
27Install wireserial clockRear: J8, SCL bus (- above J)i2c Serial Clock
28Install wire5V powerRear: J29 and J30, J55V
29Install wireanalog signal, 5V scaleRear: J2, J25analog, 5V scale
30install capacitor0.1uF capacitorRear: i5, i6component
31ultrasonic rangefinderLV-EZ4G1-G6, over rows H, i, Jdevice
32surface thermometerMLX90614E7, E8, F7, F8, over rows A, Bdeviceon spacer, gold tab facing towards magnetic couplers
33ambient air sensorHDC3022C1-C6, over rows A, Bdevice
33laser rangefinderVL53L1XC12-C17, over rows A, Bdeviceafter soldering, remove transparent orange tape from sensor
34spectrometerAS7343i12-i17, over rows F, G, Hdevice
35Install wireserial dataJ14, SDA bus (+ above J)i2c Serial Data
36Install wireserial clockJ15, SCL bus (- above J)i2c Serial Clock
37Install wiregroundJ16, GND bus (- below A)GNDroute wires toward larger numbers
38Install wirepowerJ17, 3V bus (+ below A)+3.3Vroute wires toward larger numbers
39Install wireserial dataD14, SDA bus (+ above J)i2c Serial Dataroute wires toward larger numbers
40Install wireserial clockD15, SCL bus (- above J)i2c Serial Clockroute wires toward larger numbers
41Install wiregroundD16, GND bus (- below A)GNDroute wires toward larger numbers
42Install wirepowerD17, 3V bus (+ below A)+3.3Vroute wires toward larger numbers
43Install wiregroundA26, GND bus (- below A)GND
44Install resistor10kΩ resistorE25, F25component
45Install resistor20kΩ resistorE26, F26component
46Install wireanalog signalD25, G26analog, 3V scale
47Install wireanalog signalJ26, i29 and i30analog, 3V scale