The source code, bills of material, and schematics are posted on Github here. Source code includes:
- Interface with a Yi Action Camera through an ESP8266 WiFi Board
- Interface with a GPS through RS-232 and parse the GPS sentence with TinyGPS
- Interface with a 900 MHz transceiver through RS-232
- Interface to temperature sensors through OneWire
- How to monitor power supplies
- Payload Cut Down
- Control a stepper motor and monitor its encoder
- Interface with a Hall Effect sensor
Surfing Satellites 