Heltec V3
Official Active
Heltec Automation Classic ESP32-S3 + SX1262 LoRa development board with integrated 0.96-inch OLED, Wi-Fi, and BLE. USB-C power and CP2102 serial, SH1.25 battery connector with charge management, and IPEX LoRa antenna. Widely used for Meshtastic and MeshCore companion, repeater, and room-server nodes.
~$18 approx.· 2026-06
References: mesh-sn.de ↗
- MCU
- ESP32-S3
- Radio
- SX1262
- Display
- 0.96″ OLED
- GPS
- None
- Battery
- External
- Connectivity
- USB, BLE, Wi-Fi
Roles
CompanionRepeaterRoom ServerStandalone Ui
Transports
bleusb
Other variants
Compare all 4 →
Hardware
Radio
- Technology
- LORA
- Chip
- Semtech SX1262 ↗
- Frequency
- 433 MHz,470 MHz,868 MHz,915 MHz
- TX power
- 21 dBm
- TX efficiency
- 1.05 mW/mA
- Antenna
- IPEX-1.0
Processor
- Family
- Espressif ESP32 series ↗
- Model
- Espressif ESP32-S3 ↗
- Architecture
- Xtensa LX
- Flash
- 8 MB
- RAM
- 512 KB
Battery
- Battery
- External connector
- Chemistry
- LiPo
- Built-in
- No
- Charging
- Yes
- Connector
- SH1.25-2
Expansion
- Connector
- Header 2.54 ×2 · 18 pins
Physical
Connectivity
- USB
- USB-C
- USB bridge
- CP2102
- USB modes
- Power, Serial, Flashing
- Bluetooth
- BLE 5.0
- Wi-Fi
- 802.11 b/g/n
Firmware support
| Firmware | Type | Target | Status | Notes |
|---|---|---|---|---|
| MeshCore (Official) | Official | heltec_v3 | ✓ Supported | |
| EasySkyMesh | Fork | — | ✓ Supported | |
| Meck | Fork | — | ✓ Supported | Remote repeater only. |
| Meshcomod | Fork | — | ✓ Supported | |
| MeshCore Low-Power | Fork | — | ✓ Supported | |
| MeshCoreNG | Fork | heltec_v3 | ✓ Supported | |
| Offband Mesh | Fork | — | ✓ Supported | |
| ZephCore | Custom | — | ✓ Supported | |
| MeshCore-Evo | Fork | — | ✓ Supported |