Facebook
Google
GitHub
Linkedin
I'm trying to launch a high-altitude balloon later this Spring or Summer, and made a board for telemetry and other data to be sent back to my ground station.
KiCanvas link in case that's easier: https://kicanvas.org/?repo=https://github.com/radeeyate/UpLink/tree/main/hardware
high 
- It is based around the Seeed Studio XIAO ESP32-S3 Sense, as it's really cheap and makes it easy to integrate a camera
- Images will be captured, saved to SD card (along with telem), and sent with SSDV over LoRa
- LoRa module is the Seeed Studio 114993390, which has an SX1262 internally. Antenna will be the 206764-0050 from Molex
- GPS is from a SAM-M10Q-00B GPS module, which uses the ground fill on the PCB as part of the antenna setup. The PCB is a 30x60mm board (rather than the 50x50 that the datasheet recommends, due to space problems) to accommodate the M10Q's antenna needs.
- It will be running off 3x Energizer Ultimate Lithium AAA's, and I have a TPS631000DRLR to get that to 3.3V (buck-boost).
- It will use a TPS22917DBV for high side switching the payload
- It uses the MCP3204 as an ADC for two LMT87LPGM and battery voltage over SPI due to the lack of much GPIO.
KiCanvas link in case that's easier: https://kicanvas.org/?repo=https://github.com/radeeyate/UpLink/tree/main/hardware
high 
