LoRa Node 433 & 868 Mhz ESP32 SX1276 WIFI Bluetooth Heltec

This LoRaWAN network node is an IoT development board for LoRa 433Mhz or 868Mhz (depending on the model) with WIFI 802.11 b/g/n/e/i, Bluetooth/BLE and 2.4cm OLED display.

Compatible with the Arduino environment, Windows, Linux, Mac and based on the microprocessor ESP32 (32-bit dual-core) and LoRa chip SX1278 (433Mhz version) or SX1276 (868Mhz version).

Integrates battery management system, charging and discharging, overload protection, automatic switching of USB power / battery.

Delivered with: 1 LoRa ESP32 V2 node, 1 lora antenna 433 or 868, 2 headers (soldering), battery and micro-USB cable not included.

More details

More info

Specifications lorawan Node ESP32

Microprocessor	ESP32 (240MHz LX6 dual-core), 520KB, Wi-Fi, Bluetooth BLE)
LoRa chip	SX1276 (868 version) and SX1278 (433 version)
LoRa bands	EU_433, EU_863_870
LoRa max.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 (drivers)
Battery Type	3.7V Lithium (SH1.25 x 2)
Low power design	Deep Sleep 800uA

Electrical characteristics

		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

Documentation Heltec WiFi LoRa 32

How to make a serial connection between your ESP32 card on Windows, Mac, or Linux

Arduino Library for Heltec ESP32 (or ESP32 + LoRa) devboards on Github

Pinout diagram ESP32 LoRa V2

Accessories

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LoStik - Open source USB LoRa LoRaWAN TTN
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