1/2 PCS Heltec V4 LoRa 32 Development Board Upgraded ESP32-S3 SX1262 WiFi Bluetooth 2MB Psram 16MB With GPS Module For IoT

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Heltec WiFi LoRa 32 V4 | ESP32-S3 LoRa Development Board Upgrade | Long Range

IoT Communication

Docs & Resource

Summary

The WiFi LoRa 32 V4 , the next gen to the Heltec V3, is a powerful, high-efficiency IoT maker board

 

featuring an ESP32S3 MCU and SX1262 LoRa Node chip; retaining the V3's size and identical pinout, it

 

integrates performance upgrades including a built-in Wi-Fi/Bluetooth antenna, 28±1dBm LoRa output

 

power, and a protected OLED display; its superior RF and stable system design ensure it's ready-to-use

 

and highly beginner-friendly, supporting development via Arduino, Platform IO, ESP-IDF, and

 

MicroPython; making it ideal for long-range wireless open-source projects like Meshtastic, LoRaWAN,

 

and Meshcore in applications such as smart cities and industrial control.

 

Hardware Version Comparison

Main Features

• Base on ESP32-S3R2 & SX-1262, supports Wi-Fi b/g/n, BLE, and LoRa communication.

• 2MB PSRAM and 16MB external Flash, more suitable for UI and complex system .

• High-power version with LoRa transmission power increased to 27±1dBm.

• Form factor and pin compatibility with WiFi LoRa 32 V3.

• PC casing protects the screen and integrates FPC 2.4G antenna.

• Added SH1.25-2P solar panel interface.

• Optimized lithium battery management.

• Added SH1.25-8Pin GNSS interface.

• USB Type-C interface with integrated voltage regulation, ESD protection, short-circuit protection,

       and RF isolation design.

• Low power consumption is less than 20μA.

Specifications

                        Two Options

1.Standard configuration (with spring antenna)

2.Standard configuration+GPS module (with spring antenna)

FAQ

12.4GHz Antenna

      The default 2.4G FPC antenna is located on the side of the plastic screen bracket.

   If you wish to use an IPEX-connected 2.4G antenna, you need to remove the inductor marked as ① in

   the diagram below, and add a 0-ohm resistor (or other conductive metal or cable) at the position

   marked ② to connect to the IPEX interface.

2What 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.

3What’s the battery socket type?

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

4Can I order a version without the OLED display?

      Of course, you can contact our sales staff and provide your ideas.

5Are V3 and V4 compatible?

      They are compatible in most scenarios.

      Since V4 uses the same series of chips as V3, features the same OLED, and has an almost identical

      pin layout, V3 and V4 can be used interchangeably in the majority of cases.

      However, due to the increased transmit power, the transmit power settings in some code may no

      longer correspond directly to the actual output.

6Failed to upload code

      Please try the following steps:

      1.Try using a different USB cable.

      2.Enter BootLoader mode. There are two methods to enter this mode:

      ●Hold down the PRG button, connect the USB-C cable, then release the PRG button.

      ●Connect the USB-C cable, hold down the PRG button, press the RST button once, then release the

        PRG button.