Heltec V4
In flasher Active
Heltec Automation ESP32-S3R2 + SX1262 successor to Heltec V3 with 16 MB flash, 2 MB PSRAM, and up to 28 dBm LoRa TX power. Same 0.96-inch OLED and largely V3-compatible pinout, plus solar input, optional GNSS header, and built-in 2.4 GHz FPC antenna. Native USB-C (no CP2102). Widely used for Meshtastic and MeshCore.
~$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
bleusbwifi
Other models
Compare all 4 →
Variants
Purchasable options for this device| Revision | Variant | Band | SKU |
|---|---|---|---|
| V4.3 | 863~870MHz OLED | EU868 | ZC-310-1-CN |
| V4.3 | 902~928MHz OLED | US915 / AU915 | ZC-310-1-CN2 |
Hardware
Radio
- Technology
- LORA
- Chip
- Semtech SX1262 ↗
- Band
- EU433 / CN433CN470EU868US915 / AU915
- TX power
- 28 dBm
- TX efficiency
- 5.26 mW/mA
- Antenna
- IPEX-1.0
Processor
- Family
- Espressif ESP32 series ↗
- Model
- Espressif ESP32-S3 ↗
- Architecture
- Xtensa LX
- Flash
- 16 MB
- RAM
- 2048 KB
- PSRAM
- 2 MB
Battery
- Battery
- External connector
- Chemistry
- LiPo
- Built-in
- No
- Charging
- Yes
- Connector
- SH1.25-2
Solar
- Solar charging
- Supported
Expansion
- Port 1
- Header 2.54 ×2 · 18 pins
- Port 2
- Header 2.54 ×2 · 2 pins
- Port 3
- Gnss 1.25 8 · 8 pins
Physical
Connectivity
- USB
- USB-C
- USB modes
- Power, Serial, Flashing
- Bluetooth
- BLE 5.0
- Wi-Fi
- 802.11 b/g/n
Firmware support
| Firmware | Type | Target | Status | Notes |
|---|---|---|---|---|
| MeshCore (Reference) | Reference | heltec_v4 | ✓ Supported | |
| EasySkyMesh | Fork | — | ✓ Supported | |
| ZephCore | Custom | — | ✓ Supported | |
| MeshCoreTerm | Fork | — | ✓ Supported | |
| Wadamesh | Fork | — | ✓ Supported | |
| Meshcomod | Fork | — | ✓ Supported | |
| MeshCore Low-Power | Fork | — | ✓ Supported | |
| MeshCoreTel | Fork | — | ✓ Supported | |
| Mesh Loader | Custom | — | ✓ Supported | |
| Meck | Fork | — | ✓ Supported | Remote repeater only. |
| EastMesh | Fork | — | ✓ Supported | |
| LusoFW | Fork | heltec_v4 | ✓ Supported | |
| Offband Mesh | Fork | — | ✓ Supported | |
| MeshCoreNG | Fork | heltec_v4 | ✓ Supported | |
| MeshcoreGRID | Fork | heltec_v4_tft_grid_os_ble | ✓ Supported | Requires a Heltec V4 configuration with TFT and FT6336 touch controller. |
| Heltec V4.2 Multi-Boot | Custom | — | ✓ Supported | Targets the 16 MB Heltec WiFi LoRa 32 V4.2 hardware revision. |
3D-printed enclosures
Full housings you can print yourself
556H1+ - Enhanced H1 Case for Heltec V3/V4 by muzi.works Printables ↗
180Heltec MeshCore/Meshtastic Claymore Case by pd7lj Printables ↗
122H1 Big Case for Heltec V4 running Meshtastic for standard & bendable antennas by Christian Undso Printables ↗
90Hermes External Solar Node Enclosure for RAK and Heltec by zerofox3D Printables ↗
47Compact case for Heltec v4 GPS Meshtastic node by Gleb Mayorov Printables ↗
39Compact 18650 Heltec V4 Case for Meshtastic by Doprint Printables ↗
0Heltec V4 Meshtastic Enclosure by Rob W1RCP Printables ↗