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Version: 2.8

HELTEC® RadioCore

The Heltec RadioCore series is a family of compact core modules that pair an SX1262SX1262A Semtech sub-GHz LoRa transceiver, used in most current Meshtastic hardware and recommended over the older SX127x series. LoRaLoRaA low-power, long-range wireless communication technology used by Meshtastic devices to enable communication over distances of several kilometers without the need for cellular, Wi-Fi, or other traditional network infrastructures. radio with an ESP32ESP32A chipset of microcontroller made/designed by Espressif, used by a number of devices. Higher power usage than nRF52, but often cheaper and supports Wi-Fi if desired.-S3, ESP32ESP32A chipset of microcontroller made/designed by Espressif, used by a number of devices. Higher power usage than nRF52, but often cheaper and supports Wi-Fi if desired.-C6, or nRF52840nRF52840A Nordic microcontroller from the nRF52 family, used in devices such as the RAK WisBlock core modules. Provides Bluetooth LE 5.0 and very low power consumption.. All three share the same 40.10 x 23.82 x 12.54 mm form factor, a board-to-board (BTB) connector, and two 10-pin headers, so they mount on a Heltec expansion board such as the RD02G or on a custom carrier board. The Full Accessory Kit includes the RD02G expansion board.

RadioCore RC32​

Heltec RadioCore RC32

The RC32 is the ESP32-S3 RadioCore module. Meshtastic only supports the LoRa radio module.

  • MCU:
    • ESP32-S3R8 (Wi-Fi and Bluetooth 5.0 LE)
  • LoRa Transceiver:
    • Semtech SX1262
  • Frequency Options:
    • 863 - 870 MHz
    • 902 - 928 MHz
  • Power:
    • USB-C 5 V
    • 3.3 V pin header
    • 3.3 - 4.2 V battery on the VBAT pin
  • Connectors:
    • USB-C
    • BTB connector
    • 2 x 10-pin headers
    • IPEX 4.0 antenna connector for LoRa

Features​

  • Meshtastic firmware supports an optional 128 x 220 TFT display and an optional GNSS module.
  • 2.4 GHz Wi-Fi for MQTT and network connections.

Resources​

  • Firmware file: firmware-heltec-rc32-X.X.X.xxxxxxx.bin
  • Purchase links