- Open Source (designed in KiCad), schematic files, PCB and GERBER files open, free and available
- Comfortable wearable badge, no components on the back side.
- Max size 10 x 10 cm to take advantage of cost reductions of most PCB makers.
- Can be powered by a 3.2 v LiFePO4 AAA size battery
- Compatible with TinyGS firmware for reception of LoRa satellites. No modifications needed!
Read this in other languages: Español
- ESP32 module compatible with multiple programming languages/platforms: C/C++, Arduino, Python (via MicroPython), JavaScript (via Espruino or Mongoose OS), [Rust (via esp-rs)
- 0.96" OLED display
- Infrared LED transmitter and receiver
- WiFi
- Radio transmitter and receiver module: FSK, GFSK, MSK, GMSK and LoRa!
- Onboard PCB antenna (433 Mhz and 915 Mhz versions)
- U.FL Connector for external antenna
- RGB LED
- 0.7 W speaker
- 6 buttons: 4 arranged in D-pad and 2 function buttons
- USB-C Connector
| Back | Side | External Ant |
|---|---|---|
 |
 |
 |
| ESP32 GPIO PIN | Function |
|---|---|
| 4 | SDA |
| 15 | SCL |
| ESP32 GPIO PIN | Function |
|---|---|
| 19 | POCI |
| 27 | PICO |
| 5 | SCK |
| 18 | /CS |
| ESP32 GPIO PIN | Function |
|---|---|
| 25 | Speaker |
| ESP32 GPIO PIN | Function |
|---|---|
| 0 | Up |
| 13 | Down |
| 16 | Left |
| 17 | Right |
| 33 | B |
| 32 | A |
| ESP32 GPIO PIN | Function |
|---|---|
| 21 | Red |
| 22 | Green |
| 23 | Blue |
| ESP32 GPIO PIN | Function |
|---|---|
| 2 | Infrared LED |
| ESP32 GPIO PIN | Function |
|---|---|
| 12 | VS1838b output |