WiFi LoRa 32(V3), ESP32S3 + SX1262 LoRa Node, Meshtastic and LoRaWAN Compatible

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+86 028 6237 4838

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Description

Characteristics

1 Reviews

Description

Summary

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

Description

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.

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

Characteristics

Weight	35 g
Dimensions	6.6 × 6.6 × 2 cm
LoRa Band	433MHz, 470~510MHz, 863~870MHz, 902~928MHz
Need Plastic Shell?	Yes, No

1 Reviews