Heltec Wifi LoRa32 V3 Development Board 433MHz 863MHz ESP32-S3 SX1262 OLED Display LoRa Kit for Arduino Meshtastic IoT LoRaWAN

Summary

WiFi LoRa 32 (V3) is a classic IoT development board designed and produced by Heltec Automation.

Since its launch in 2017, it has been favored by developers and makers.

It is widely used in numerous excellent open-source projects and directly made into products for LoRa and 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.

It is an ideal option for smart cities, farms, homes, industrial control, house security, wireless meter reading, and IoT developers.

Main Features

• Microprocessor: ESP32-S3FN8 (Xtensa 32-bit LX7 dual-core processor, five-stage pipeline rack structure, frequency up to 240 MHz).
• LoRa Node Chip: SX1262.
• Interface: Type-C USB interface with a complete voltage regulator, ESD protection, short circuit protection, RF shielding, and other protection measures.
• Battery Interface: Onboard SH1.25-2 battery interface, integrated lithium battery management system (charge and discharge management, overcharge protection, battery power detection, USB and battery power automatic switching).
• Display: Onboard 0.96-inch 128x64 dot matrix OLED display can be used to display debugging information, battery power, and other information.
• Connectivity: Integrated WiFi, LoRa, and Bluetooth network connections, onboard Wi-Fi and Bluetooth dedicated 2.4GHz metal spring antenna, with a reserved IPEX (U.FL) interface for LoRa use.
• Serial Chip: Integrated CP2102 USB to serial port chip, convenient for program downloading and debugging information printing.
• Development: Supports the Arduino development environment.
• Design: Features good RF circuit design and low-power design.

WiFi LoRa 32 (V3) supports the following development methods:

Compared to WiFi LoRa 32 (V2), V3 has made the following upgrades:

WiFi LoRa 32 is compatible with the following open-source projects:

• ESP32 Paxcounter
• Disaster Radio
• Meshtastic
• Tiny GS

We also provide a standard ESP32 Arduino LoRaWAN library:

• Heltec ESP32 LoRaWAN

This library is already included in the Heltec ESP32 Arduino Framework by default.

Resource

Pin Map

Dimension

With shell

No shell

Specifications

Packing List

The default packing list without selecting any accessories is as follows:

FAQ

Q1: Is V2 code compatible with V3?
A1: No, the MCU is different.

Q2: Can ESP32's WiFi and Bluetooth be used at the same time?
A2: No, the WiFi LoRa 32 does not have an external PSRAM. If your application needs to use Bluetooth and Wi-Fi at the same time, you can look into this product: Heltec Wireless Bridge.

Q3: Meshtastic screen has a digital front-end issue?
A3: It is 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

Q4: What is the battery socket type?
A4: You can find this type of socket by searching "SH1.25 x 2".

Q5: What development methods does it support?
A5:

• Arduino
• Micro Python
• Platform.io
• Espressif IDE

We strongly recommend using Arduino. We have complete technical support and provide complete LoRaWAN code for the ESP32 Arduino framework.

Q6: Can the onboard 2.4GHz antenna be replaced?
A6: The 2.4GHz antenna is a spring antenna, and there is no additional interface on the board for 2.4GHz wireless signals.

More info about Heltec products:

Company Overview

• Chengdu Heltec Automation Technology Co., Ltd. (English abbreviation Heltec Automation).
• At present, the company's research, development, and production include OLED dot matrix screens, electronic ink screens, IoT series products, LoRa supporting solutions, and high-precision temperature controllers with automatic control algorithms as the core.
• The company features a strong technical research and development team, a scientific production and manufacturing platform, and a strict quality management system.

Our Services and Strengths

We offer stable performance, cost-effective products, and high-quality service. Our products have earned a strong reputation domestically and received excellent evaluations in countries such as France, Germany, Russia, the United States, and South Korea.

• Rigorous quality assurance system.
• High level of service awareness.
• High quality team.
• Components use well-known brands.
• Quick response customer program.
• Self-owned processing plant, rapid production, equipped with automatic SMT placement machine, automatic screen printing machine and reflow oven.