SPECIFICATIONS

Summary

WiFi LoRa 32 (V3) is a classic IoT dev board designed & produced by Heltec Automation. Since its launch in 2017, it has been loved by developers and makers. Widely used in numerous excellent open-source projects and directly made into products for LoRa/LoRaWAN features.
The newly launched V3 version has the same pin sequence as the V2 version and retains Wi-Fi, BLE, LoRa, OLED display, and other functions.

Main Features

Microprocessor: ESP32-S3FN8 (Xtensa® 32-bit LX7 dual-core processor, five-stage pipeline rack Structure, frequency up to 240 MHz).

SX1262 LoRa node chip.

Type-C USB interface with a complete voltage regulator, ESD protection, short circuit protection, RF shielding, and other protection measures.

Onboard SH1.25-2 battery interface, integrated lithium battery management system (charge and discharge management, overcharge protection, battery power detection, USB / battery power automatic switching).

Onboard 0.96-inch 128*64 dot matrix OLED display can be used to display debugging information, battery power, and other information.

Integrated WiFi, LoRa, Bluetooth three network connections, onboard Wi-Fi, Bluetooth dedicated 2.4GHz metal spring antenna, reserved IPEX (U.FL) interface for LoRa use.

Integrated CP2102 USB to serial port chip, convenient for program downloading, and debugging information printing.

Support the Arduino development environment.

With good RF circuit design and low-power design.

FAQ

Can the onboard 2.4GHz antenna be replaced?

The 2.4GHz antenna is a spring antenna, and there is no additional interface on the board for 2.4GHz wireless signals.

Can ESP32’s WiFi and Bluetooth be used at the same time?

No, the WiFi LoRa 32 don’t have an external PSRAM, if your application need use Bluetooth and Wi-Fi at the same time, you can look into this product: Heltec Wireless Bridge.

What development methods does it support?

Arduino
Micro Python
Platform.io
Espressif IDE
We strongly recommend using Arduino. We have complete technical support and provide complete  LoRaWAN code for ESP32 Arduino framework.

What’s the battery socket type?

You can find this type of socket by search “SH1.25 x 2”.

Can I order a version without the OLED display?
Of course, you can contact our sales staff and provide your ideas.

Is V2 code compatible with V3?
No, the MCU is different.

Meshtastic screen has a digital front-end issue?

It’s caused by the meshtastic setting. Changing the default screen to SSD1306 can solve the problem.
The specific steps are as follows:
“Radio configuration”→”Display”→”Override OLED auto-detect”→”SSD1306”