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Heltec

WiFi LoRa 32 v3 902-928 MHz Band with case

WiFi LoRa 32 v3 902-928 MHz Band with case

$50.00 AUD
$50.00 AUD
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WiFi LoRa 32(V3), ESP32S3 + SX1262 LoRa Node, Meshtastic and LoRaWAN Compatible

WiFi LoRa 32 is a classic IoT development board widely used in many open-source projects and IoT products.

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

 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 7*ADC1 + 2*ADC2;
7*Touch;
3*UART;
2*I2C;
2*SPI; etc.
Memory 384KB ROM;
512KB SRAM;
16KB RTC SRAM;
8MB SiP Flash
Interface Type-C USB;
2*1.25 lithium battery interface;
LoRa ANT(IPEX1.0);
2*18*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

 

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 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 https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/tree/master/esp32/libraries/LoraWan102.

What’s the battery socket type?
You can find this type of socket by search “SH1.25 x 2”.

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”

Links

PS: The box has a misprint. The Band is 902-928 MHz.

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