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Heltec device

It continues to be a struggle to support this very old ESP32 chip, not officially supported in 1.3 / 2.0 and support may be dropped completely.

Using this device with a battery is not recommended.

  • ESP32 - Wifi & Bluetooth
  • SX127x - LoRa Transceiver
  • Frequency options:
    • 433 MHz
    • 470-510 MHz
    • 863-870 MHz
    • 902-928 MHz
  • Built in 0.96 inch OLED display
  • U.FL antenna connector
  • Reset and Program switches
  • No GPS
  • Firmware file: firmware-heltec-1.x.x.bin

There are two versions of the Heltec (V2). Below is a picture highlighting the visual differences: