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Here is everything you need to create your own STELLA including print instructions for the 3D printed parts and elements that need to be purchased.
3D Parts Required for Handheld Spectrometer
Housing Cover
Download .STL
Thermal IR Sensor Spacer
Download .STL & .STEP
Lower Housing
Download .STL
Processor Spacer
Download .STL
Non-Required 3D Parts for Handheld Spectrometer
Parts to Purchase
| Item | Description | Quantity | $ Each Approx | Vendor | Part Number | Vendor URL |
|---|---|---|---|---|---|---|
| 1 | Perma-Proto Circuit Board, Full Size | 1 | $7 | Adafruit Industries | 1606 | https://www.adafruit.com/product/1606 |
| 2 | wire, solid, black, 24 AWG (22-26 AWG OK) | 30cm | $4 | Adafruit Industries | 3174 | https://www.adafruit.com/product/3174 |
| 3 | wire, solid, red, 24 AWG (22-26 AWG OK) | 30cm | $4 | Adafruit Industries | 3174 | https://www.adafruit.com/product/3174 |
| 4 | wire, solid, yellow, 24 AWG (22-26 AWG OK) | 30cm | $4 | Adafruit Industries | 3174 | https://www.adafruit.com/product/3174 |
| 5 | wire, solid, green, 24 AWG (22-26 AWG OK) | 30cm | $4 | Adafruit Industries | 3174 | https://www.adafruit.com/product/3174 |
| 6 | wire, solid, blue, 24 AWG (22-26 AWG OK) | 30cm | $4 | Adafruit Industries | 3174 | https://www.adafruit.com/product/3174 |
| 7 | wire, solid, violet, 24 AWG (22-26 AWG OK) | 30cm | $4 | Adafruit Industries | 3174 | https://www.adafruit.com/product/3174 |
| 8 | wire, solid, grey, 24 AWG (22-26 AWG OK) | 30cm | $4 | Adafruit Industries | 3174 | https://www.adafruit.com/product/3174 |
| 9 | wire, solid, white, 24 AWG (22-26 AWG OK) | 30cm | $4 | Adafruit Industries | 3174 | https://www.adafruit.com/product/3174 |
| 10 | solder, lead-free, SAC 305 alloy | 50cm | $15 | Adafruit Industries | 1930 | https://www.adafruit.com/product/1930 |
| 11 | capacitor, 10uF 25V | 1 | $1 | Digi-Key | 493-10451-1-ND | https://www.digikey.com/en/products/detail/nichicon/UMA1E100MDD1TP/4312710?s=N4IgTCBcDaICwE4DMBaAjABjgVjelAcgCIgC6AvkA |
| 12 | Header Pins, 36 positions | 3 | $5 | Adafruit Industries | 392 | https://www.adafruit.com/product/392 |
| 13 | Current Limiting Resistor, 100Ω | 1 | $1 | Adafruit Industries | 4293 | https://www.adafruit.com/product/4293 |
| 14 | LED (Light Emitting Diode) | 1 | $4 | Adafruit Industries | 299 | https://www.adafruit.com/product/299 |
| 15 | heat shrink tubing, DIA 1.5 - 3mm x 15mm 1 each | 1 | $5 | Adafruit Industries | 1649 | https://www.adafruit.com/product/1649 |
| 16 | Tactile Pushbutton Switch + Cap | 1 | $6 | Adafruit Industries | 1009 | https://www.adafruit.com/product/1009 |
| 17 | Push-on, push-off type power switch | 1 | $2 | Digi-Key | CW181-ND | https://www.digikey.com/en/products/detail/cw-industries/GPTS203211B/3190590?s=N4IgTCBcDaIMIHUCMAOJBaAcgERAXQF8g |
| 18 | Adalogger Data Logger FeatherWing | 1 | $9 | Adafruit Industries | 2922 | https://www.adafruit.com/product/2922 |
| 19 | Feather M4 Express | 1 | $23 | Adafruit Industries | 3857 | https://www.adafruit.com/product/3857 |
| 20 | Stacking Headers, 12 position and 16 position | 1 | $1 | Adafruit Industries | 2830 | https://www.adafruit.com/product/2830 |
| 21 | Near Infrared Spectrum Sensor (AS7263) | 1 | $26 | SparkFun Electronics | SEN-14351 | https://www.sparkfun.com |
| 22 | Air Temperature Sensor (MCP9808) | 1 | $5 | Adafruit Industries | 1782 | https://www.adafruit.com/product/1782 |
| 23 | Pressure and Humidity Sensor (BME280) | 1 | $20 | Adafruit Industries | 2652 | https://www.adafruit.com/product/2652 |
| 24 | Visible Spectrum Sensor (AS7262) | 1 | $20 | Adafruit Industries | 3779 | https://www.adafruit.com/product/3779 |
| 25 | Infrared Thermometer Sensor 90º FOV | 1 | $16 | Adafruit Industries | 1747 | https://www.adafruit.com/product/1747 |
| 26 | TFT Touch Screen Display (Thin Film Transistor) | 1 | $30 | Adafruit Industries | 3315 | https://www.adafruit.com/product/3315 |
| 27 | CR1220 Clock Battery | 1 | $1 | Adafruit Industries | 380 | https://www.adafruit.com/product/380 |
| 28 | SD micro card, micro SD to full size SD adapter | 1 | $10 | Adafruit Industries | 1294 | https://www.adafruit.com/product/1294 |
| 29 | micro SD to USB A adapter | 1 | $6 | Adafruit Industries | 939 | https://www.adafruit.com/product/939 |
| 30 | Lithium Ion Rechargeable Battery, Cylindrical | 1 | $10 | Adafruit Industries | 1781 | https://www.adafruit.com/product/1781 |
| 31 | USB cable, micro b to A | 1 | $3 | Adafruit Industries | 592 | https://www.adafruit.com/product/592 |
| 32 | USB cable, micro b to C | 1 | $3 | Adafruit Industries | 3879 | https://www.adafruit.com/product/3879 |
| 33 | Full size breadboard, for use as assembly fixture | 1 | $6 | Adafruit Industries | 239 | https://www.adafruit.com/product/239 |
| Parts, total cost: | $267 |
* Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
