Heltec WiFi LoRa 32 V3/V4 ESP32 S3 SX1262 Dual-core Dev Board 21/28dBm for LoRaWAN Meshtastic IoT 868 915 MHz

Heltec WiFi LoRa 32 V3/V4 ESP32 S3 SX1262 Dual-core Dev Board 21/28dBm for LoRaWAN Meshtastic IoT 868 915 MHz

$129.00

$129.00 $0.00

Description

SPECIFICATIONS

Battery Included: no

Brand Name: Heltec Automation

High-concerned chemical: none

Model Number: lora 32

Origin: Mainland China

Typical Application Fields: Internet of Things (IoT)

Upgrade and Enhancement

WiFi LoRa 32 V4

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.

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.
LoRa Transmit Power: High-power version 28 dBm, Low-power version 22 dBm
PC casing protects the screen and integrates FPC 2.4G antenna.
Form factor and pin compatibility with WiFi LoRa 32 V3.
PC casing protects the screen and integrates FPC 2.4G antenna.
Added SH1.25-2Pin solar panel interface, and SH1.25-8Pin GNSS interface.
Optimized lithium battery management.
Low power consumption is less than 20μA.

Specifications

Parameters	Description
MCU	ESP32-S3R2 (Xtensa®32-bit lx7 dual core processor)
LoRa Chip	SX1262
Frequency	High-power version: 863-928MHz Low-power version: 433, 470-510, 863-928MHz
Max. TX Power	High-power version: 28 ±1 dBm Low-power version: 21 ±1 dBm
Max. Receiving sensitivity	-137dBm@SF12 BW=125KHz
Wi-Fi	802.11 b/g/n, up to 150Mbps
Bluetooth	Bluetooth (LE), Bluetooth 5, Bluetooth Mesh
Hardware Resource	7ADC1 + 2ADC2; 7Touch; 3UART; 2I2C; 2SPI; etc.
Memory	384KB ROM; 512KB SRAM; 16KB RTC SRAM; 2MB PSRAM; 16MB Flash
Interface	Type-C USB; SH1.252 Pin lithium battery interface; SH1.258 Pin interface; LoRa ANT(IPEX1.0); 2.4G ANT(IPEX1.0)
Battery applicable	3.3-4.4V lithium battery
Operating Temperature	-20 ~ 70 ℃
Dimensions	51.7 * 25.4* 10.7mm

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More Powerful MCU

The ESP32-S3R2 offers 2MB of PSRAM and is equipped with anexternal 16MB Flash, making the upgraded memoryconfiguration more suitable for UI and complex system design.

Higher Transmission Power

The device is available in high-power and low-power versions.The high-power version offers a transmit power of up to27+1dBm, enabling longer communication distances andadaptability to a wider range of application scenarios.

More Peripheral Interfaces

Added 1.25*2P solar panel interface, supports 4.7~6V solar input.
Added 1.25*8P GNSS interface, GNSS power can be individually controlled.
1.25*2P lithium battery interface

Compatible with V3 Pinout

Almost entirely retains the form factor and pin layout of V3,while adding additional pins. The pin plating process has beenupgraded from silver plating to gold plating.

Pin Map

Demension

Docs & Resource

Packing list

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

WiFi LoRa 32 V3

WiFi LoRa 32 is a classic IoT dev-board designed & produced by Heltec Automation. Since its launch in 2017, it has been loved by developers and makers. 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 the best 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).
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.

Specifications

Parameters	Description
Master Chip	ESP32-S3FN8 (Xtensa®32-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	7ADC1 + 2ADC2; 7Touch; 3UART; 2I2C; 2SPI; etc.
Memory	384KB ROM; 512KB SRAM; 16KB RTC SRAM; 8MB SiP Flash
Interface	Type-C USB; 21.25 lithium battery interface; LoRa ANT(IPEX1.0); 218*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

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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.

USB Type C