We originally designed the STELLA-1 instrument to work with the 2.4” TFT Touch Screen Display Featherwing, part number 3315, https://www.adafruit.com/product/3315
That display is out of stock, due to ongoing supply chain issues. While the Featherwing version is unavailable, we’ve developed a workaround to duplicate the functionality, so we can continue to make STELLA-1 instruments.
Note: The 3D thermal sensor spacer and 3D Feather spacer should be printed before assembly.
Build Steps - Part 1 Wiring
Build Steps - Part 2 Header Pins
Build Steps - Part 3 Install sensors
Build Steps - Part 4 Discrete Components
Build Steps - Part 5 Assemble Datalogger board
SUPPLY CHAIN NOTE: You may use either the Feather RP2040 or the Feather M4 Express for STELLA. Either one will run using the same software. These instructions show the Feather RP2040 because that unit is available. The Feather M4 Express is out of stock, and likely to remain so.
Build Steps - Part 6 Connectors (optional)
Build Steps - Part 7 Final Assembly
Build Steps - Part 7* Alternate Final Assembly
* Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.