SPECIFICATIONS

Accessory Type: Extension Board

Battery Included: no

Bluetooth: Bluetooth 5 (LE)

Brand Name: Heltec Automation

Choice: yes

Compatible With: heltec lora 32 v3

Dimensions: 50.2 * 25.5* 10.2 mm

Frequency: 863-928MHz

High-concerned chemical: none

LoRa Node Chip: SX1262

Master Chip: ESP32-S3FN8

Max. Receiving sensitivity: -134dBm@SF12 BW=125KHz

Max. TX Power: 21±1dBm

Operating Temperature: -20 ~ 70 ℃

Origin: Mainland China

Typical Application Fields: Internet of Things (IoT)

USB to Serial Chip: CP2102

Wi-Fi: 802.11 b/g/n, up to 150Mbps

semi_Choice: yes

Note:

Batteries are not included in this listing!

If you wish to purchase batteries, please click the link below:

Heltec 3.7V LiPo Battery 800mAh 3000mAh SH1.25 Connector for LoRa 32 V3 V4 T114 Wireless Stick Meshtastic Node Kit - AliExpress 44

Docs & Resource

Summary

WiFi LoRa 32 V3, also called Heltec V3, durable IoT maker kit powered by the ESP32S3 MCU and

SX1262 LoRa Node chips. Integrated three wireless communication ways —LoRa、BLE、and Wi-Fi，

along with an on-board OLED display, it presents a robust, all-in-one solution.

Its superior RF design and stable, minimal system design ensure the product is ready-to-use “out of the

box,” and support for development methods like Arduino, Platform IO, ESP-IDF, and MicroPython make it

beginner-friendly.

It is now widely used in well-known long-range wireless open-source projects such as Meshtastic and

Meshcore, serving applications in smart cities, smart farms, industrial control, and security systems.

Specification

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

1.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.

2.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.

3.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.

4.What’s the battery socket type?

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

5.Can I order a version without the OLED display?

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

6.Is V2 code compatible with V3?

No, the MCU is different.

7.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”