Heltec WiFi LoRa 32 (V2)
Classic ESP32-based LoRa + Wi-Fi + OLED board with battery management.
Companion Radio Firmware
Repeater
Room Server (To be confirmed)
Main Chip
ESP32 (dual-core 32-bit MCU + ULP core)
LoRa Chip
SX1276/SX1278
CPU Frequency
240 MHz
Flash Memory
8MB
LoRa Bands
EU_433, CN_470_510, EU_863_870, US_902_928
USB Interface
Type-C with various protections
Display
0.96 inch OLED screen (128×64)
Standby Current
≤ 800uA
Key Features
Display
WiFi
Bluetooth
Built-in Antenna
USB to Serial
Deep Sleep
Battery Charging
Implementation Details
- Dedicated 2.4 GHz metal spring antenna for WiFi and Bluetooth
- Integrated CP2102 chip for programming and debugging
- SH1.25-2 battery interface with integrated lithium battery management system
- Battery management includes charging/discharging control, overcharge protection, and power detection
Detailed Specifications
| Parameter | Description |
|---|---|
| Main Chip | ESP32 (dual-core 32-bit MCU + ULP core) |
| LoRa Chip | SX1276/SX1278 |
| Max CPU Frequency | 240 MHz |
| Flash Memory | 8MB |
| Supported LoRa Bands | EU_433, CN_470_510, EU_863_870, US_902_928 |
| USB Interface | Type-C with voltage regulator, ESD protection, short-circuit protection, RF protection |
| Battery | SH1.25-2 battery interface, integrated lithium battery management system (charging and discharging, overcharge protection, power detection, automatic USB/battery switching) |
| Display | 0.96 inch OLED screen 128*64 dots |
| Standby Current | ≤ 800uA |