Heltec WiFi LoRa 32 (V3)
Also known as: Heltec WiFi LoRa 32 V3 · Heltec LoRa32 V3
The default node for Meshtastic / MeshCore / LoRaWAN: ESP32-S3 plus a Semtech SX1262, a small OLED and LiPo charging, for off-grid mesh messaging and long-range telemetry.
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At a glance
⚑ flag an error| SoC | ESP32-S3 |
|---|---|
| Vendor | Heltec Automation |
| Type | LoRa / mesh |
| Memory | 8 MB flash |
| Display | 0.96" 128x64 (SSD1306 OLED) |
| Connectivity | Wi-Fi, BLE 5, LoRa (SX1262) |
| USB | USB-C |
| Battery | Yes (onboard LiPo charging) |
| Typical price | $15-22 (street, varies) |
Good for
Gotchas to know
- Buy the correct frequency band for your region and law: 863-870 MHz (EU) vs 902-928 MHz (US).
- Attach the LoRa antenna before transmitting.
- The OLED is for status only; a V4 (also S3 plus SX1262, higher TX power) is now available.
Variants
Region-specific frequency SKUs (EU868 / US915 / others). V3 and newer V4.
The ESP32-S3 inside
This board is built on the ESP32-S3 . See the SoC page for the full peripheral, GPIO and security details.
Bare modules on the same SoC:
Resources
Community guides usually go deeper than this page: pinout diagrams, wiring, library setup and copy-paste example code from people who build with these boards daily.