Skip to main content

HELTEC® HT-CT62

Heltec HT-CT62

The Heltec HT-CT62 is a tiny, low-cost surface-mount module that combines an ESP32-C3 MCU with an SX1262 LoRa radio. It is a bare module — with no display, battery, or enclosure — designed to be soldered onto a carrier board, making it a popular building block for DIY Meshtastic nodes.

Specifications​

  • MCU
    • ESP32-C3FN4 (32-bit RISC-V, up to 160 MHz)
      • 4 MB SiP flash
      • 2.4GHz Wi-Fi & Bluetooth LE
  • LoRa Transceiver
    • Semtech SX1262 (max TX 21±1 dBm, sensitivity to -134 dBm)
  • Frequency options
    • 470 MHz
    • 868 MHz
    • 915 MHz
  • Connectors
    • IPEX 1.0 (U.FL) antenna socket for LoRa
    • 1.27 mm castellated (stamp-hole) pins for SMT assembly

Features​

  • Bare LoRa + MCU module — no display, GPS, buttons, buzzer, or battery on the module itself.
  • Ultra-low ~10 µA deep-sleep current.
  • Compact 17.78 x 17.78 x 2.8 mm SMT footprint for direct assembly onto a carrier board.

Resources​

  • Firmware file: firmware-heltec-ht62-esp32c3-sx1262-X.X.X.xxxxxxx.bin
  • Purchase Links:
DiscordXFacebookInstagramYouTubeRedditBlueskyMastodonTelegram