Electronic conference badge for programming conventions, hacking events, etc.
- 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
- 433 Mhz radio transmitter and receiver (LoRa) connected to a PCB onboard antenna!
- U.FL Connector for external 433 Mhz antenna
- RGB LED
- 0.7 W speaker
- 6 buttons: 4 arranged in D-pad and 2 function buttons
- USB-C Connector
SSD1306 128x64 i2c OLED display
| 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 |
Buttons ( please use internal pull-ups! )
| 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 |
VS1838b INFRARED RECEIVER MODULE
| ESP32 GPIO PIN |
Function |
| 12 |
VS1838b output |
