WiFi LoRa 32 V3 – Next-Gen IoT Dev Board by Heltec The WiFi LoRa 32 V3 is the latest evolution of Heltec Automation’s iconic IoT development board —first launched in 2017 and widely loved by makers and developers . This upgraded version retains the same pinout as V2 while integrating: Wi-Fi Bluetooth 5 (LE) LoRa (SX1262) 0.96" OLED display Perfect for building: Meshtastic mesh networks Smart city infrastructure Industrial automation Home security systems Custom IoT applications Powered by ESP32-S3 + SX1262 Under the hood: ESP32-S3FN8 dual-core processor SX1262 LoRa transceiver Supports Arduino, MicroPython, and more Designed for Real-World Deployment USB Type-C interface Onboard lithium battery management Low-power design for mobile or fixed use Robust RF circuit for stable communication Flexible expansion options for advanced builds Whether you're prototyping a Meshtastic node, deploying a LoRaWAN gateway, or crafting a custom wireless solution, the WiFi LoRa 32 V3 is your go-to board for reliable, scalable IoT innovation . Wireless Mesh & GPS DIY Kit – Based on Heltec LoRa32 V3 868MHZ Build your own reliable, long‑range communication device with our Wireless Mesh & GPS DIY Kit, powered by the robust Heltec LoRa32 V3 platform – all for under €30 . This open‑source , portable parts bundle includes everything you need to create a compact solution combining offline mesh networking , GPS tracking , OLED display with controls , and ESP32‑S3 Wi‑Fi/BLE connectivity . All components are tested for compatibility , so you can skip the guesswork and start building in minutes. Perfect for outdoor adventure , emergency rescue , IoT prototyping , wireless security research , and STEM education — your next project starts here . Features Microprocessor: ESP32-S3FN8 (Xtensa 32-bit LX7 dual-core, 5-stage pipeline, up to 240 MHz) LoRa Chip: SX1262 transceiver for long-range communication USB Type-C interface with onboard voltage regulation, ESD protection, short-circuit protection, and RF shielding Battery Interface: SH1.25-2 connector with integrated lithium battery management (charge/discharge, overcharge protection, voltage detection, auto USB/battery switching) Display: 0.96" 128×64 OLED screen for debug info, battery status, and more Triple wireless: Built-in Wi-Fi, LoRa, and Bluetooth with a 2.4GHz metal spring antenna + IPEX (U.FL) connector for external LoRa antenna USB-to-Serial: Onboard CP2102 chip for easy firmware flashing and serial debugging Arduino IDE support: Perfect for embedded development and quick prototyping Optimized RF and power design: Great for low-power IoT applications Specifications Parameters Description Master Chip ESP32-S3FN8 (Xtensa32-bit lx7 dual core processor) LoRa Node Chip SX1262 USB to Serial Chip CP2102 Frequency 470~510MHz,863~928MHz Max. TX Power 21±1dBm Max. Receiving sensitivity -134dBm@SF12 BW=125KHz Wi-Fi 802.11 b/g/n, up to 150Mbps Bluetooth Bluetooth 5 (LE) Hardware Resource 7*ADC1 + 2*ADC2;7*Touch;3*UART;2*I2C;2*SPI; etc. Memory 384KB ROM;512KB SRAM;16KB RTC SRAM;8MB SiP Flash Interface Type-C USB;2*1.25 lithium battery interface;LoRa ANT(IPEX1.0);2*18*2.54 Header Pin Battery 3.7V lithium battery power supply and charging Operating Temperature -20 ~ 70 ℃ Dimensions 50.2 * 25.5* 10.2 mm Pin Map High light USB Type C The power supply, firmware download, and debugging interfaces adopt a more universal USB Type C interface, making development work more convenient. Plastic Shell We also made a plastic shell as an optional accessory. Which provide basic protection for the development board. Onboard OLED Display The integrated OLED display can be used to show some information such as system status and parameters, making it convenient for users to directly use the entire development board for their own product design. Wireless Mesh & GPS DIY Kit Wiring: Encoder A Heltec 5 Encoder G Heltec GND Encoder B Heltec 6 Encoder Sw1 Heltec 7 Encoder Sw2 Heltec GND Buzzer + Heltec 45 Buzzer - Heltec GND Vibro + Heltec 40 Vibro - Heltec GND GPS VCC Heltec 3V3 GPS RX Heltec 48 GPS TX Heltec 47 GPS GND Heltec GND BME280 VCC Heltec 3V3 BME280 GND Heltec GND BME280 SCL Heltec 42 BME280 SDA Heltec 41 HY-4P Black Heltec GND HY-4P Red Heltec 3V3 HY-4P Yellow Heltec 41 HY-4P White Heltec 42 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” Docs & Resource [Resource] — Heltec ESP (ESP32&ESP8266) framework (Include LoRaWAN library) [Attachment] — Heltec ESP32 special library [Resource] — Hardware Update Logs [Attachment] — V3.1 Schematic diagram [Attachment] — V3.2 Schematic diagram [Attachment] — Datasheet [Resource] — User manual and related documents [Resource] — Downloadable Resources Project WiFi LoRa 32 & Hall Sensor Door Detection LoRaWAN System Packing list The default packing list without selecting any accessories is as follows: Item Quantity WiFi LoRa 32 (V3) x1 LoRa Antenna x1 SH1.25×2 Battery Connector x1 2.54*18 Header Pin x2 Wireless Mesh & GPS DIY Kit - Only Accessories (Without V3) Item Quantity Case x1 GY-BME280 (3.3v) x1 NEO-7M GPS moudle x1 Active buzzer 3V x1 Mini Vibration Motor DC 3V x1 Antenna x1 3.7V 974058 3000mAh Lipo Polymer Lithium Battery x1 EC11 rotary encoder x1 HY-4P x1
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