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WiFi LoRa 32 (V2)

$18.20 – $20.80

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Include antenna;
Include SH1.25 x 2 battery connector;
Include pin map sticker;
Not include battery;

3.7V/1000mAh Lithium(Sale only for mainland China)
Cooling rib
Antenna
Bread Board
Plastic shell

WiFi LoRa 32 is a classic IoT dev-board designed & produced by Heltec Automation(TM), it’s a highly integrated product based on ESP32 + SX127x, it has Wi-Fi, BLE, LoRa functions, also Li-Po battery management system, 0.96″ OLED are also included. It’s the best choice for smart cities, smart farms, smart home, and IoT makers.

This product can’t meet your needs? Choose from the Heltec LoRa Node family. Or have a quick look about the CubeCell series.

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Tech Specs
Docs & Resource
Test Info

WiFi LoRa 32 is a part of the “Heltec LoRa“ series, with the following features:

CE Certificate;
Microprocessor: ESP32 (dual-core 32-bit MCU + ULP core), with LoRa node chip SX1276/SX1278;
Micro 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);
Integrated WiFi, LoRa, Bluetooth three network connections, onboard Wi-Fi, Bluetooth dedicated 2.4GHz metal 3D antenna, reserved IPEX (U.FL) interface for LoRa use;
Onboard 0.96-inch 128*64 dot matrix OLED display, which can be used to display debugging information, battery power, and other information;
Integrated CP2102 USB to serial port chip, convenient for program downloading, debugging information printing;
Support the Arduino development environment;
We provide ESP32 + LoRaWAN protocol Arduino® library, this is a standard LoRaWAN protocol that can communicate with any LoRa gateway running the LoRaWAN protocol. In order to make this code running, a unique license is needed. it can be found on this page;
With good RF circuit design and basic low-power design (sleep current ≤800uA), it is convenient for IoT application vendors to quickly verify solutions and deploy applications.

Technical Parameters

source	parameter
MCU	ESP32( 240MHz Tensilica LX6 dual-core + 1 ULP, 600 DMIPS, 520KB SRAM, Wi-Fi, dual mode Bluetooth)
LoRa chip	SX1276 (868 and 915 version); SX1278 (433 and 470 version)
LoRa bands	EU_433, CN_470_510, EU_863_870, US_902_928 four bands optional
LoRa maximum output power	18dB ± 2dB
Hardware resources	UART x 3; SPI x 2; I2C x 2; I2S x 1
	12 – bits ADC; 8 – bits DAC
	29 general GPIO
Display	0.96 inch 128*64 OLED display
FLASH	8MB(64M-bits) SPI FLASH
interface	Micro USB x 1; LoRa antenna interface(IPEX) x 1
Size	50.2 x 25.5 x 9.74 mm
USB to UART Bridge	CP2102
Battery Type	3.7V Lithium（SH1.25 x 2）
Battery detection circuit	√
External device power control（Vext）	√
Low power design	Deep Sleep 800uA

Electrical characteristics

Electrical characteristics	condition	Minimum	Typical	Maximum
Power Supply	USB powered（≥500mA）	4.7V	5V	6V
	Lithium powered（≥250mA）	3.3V	3.7V	4.2V
	3.3V（pin）powered（≥150mA）	2.7V	3.3V	3.5V
	5V（pin）powered（≥500mA）	4.7V	5V	6V
Power consumption(mA)	WIFI scan		115mA
	WIFI AP		135mA
	LoRa 10dB emission		50mA
	LoRa 12dB emission		60mA
	LoRa 15dB emission		110mA
	LoRa 20dB emission		130mA
Output	3.3V pin output			500mA
	5V pin output （USB powered only）		Equal to the input current
	External device power control (Vext 3.3V）			350mA

How to install Heltec ESP32 Arduino Development Environment

http://www.heltec.cn/wifi_kit_install/

Heltec ESP32 Series Source code

Heltec ESP(ESP32 & ESP8266) framework (the basic of Heltec ESP series products Arduino running environment): https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series

Heltec ESP32 library (must work with Heltec ESP framework): https://github.com/HelTecAutomation/Heltec_ESP32

Heltec ESP32 LoRaWAN library (a standard LoRaWAN protocol library provide by Heltec Automation, need a license to active: http://www.heltec.cn/search/): https://github.com/HelTecAutomation/ESP32_LoRaWAN

Adafruit CircuitPython TinyLora library (Alan Peaty ported and shared this library): https://github.com/fantasticdonkey/uLoRa

User test info report

General test report: https://robotzero.one/heltec-wifi-lora-32/
Communication distance test:
- YouKu:click to play
- YouTube:click to play

470MHz Smith Chart

LoRa 470MHz RF Power Output

470MHz SWR Test Data

868MHz and 915MHz SWR Test Data

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