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ESP32 with LoRa sx1278,OLED and LiPo Battery Power, USB, IPEX, 433-510MHz


Out of stock

SKU: ESP3-022Code: ESP32-SX1278-OLED-HT


Out of stock

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 homes, and IoT makers.

NOTE: Some of the photos show V1, but we sell version 2 of this board (V2). Both V1 and V2 are the same size, and look nearly identical.

The development board features a USB-UART Bridge circuit which allows developers to connect the board to a computer’s USB port for flashing, debugging and power.

This board has two rows of standard 0.1”(2.54mm) header pads on both sides for easy access, allowing it to be mounted on a breadboard or prototype board with a standard 0.1" grid.

It can be powered via USB or via the battery connector. The battery connector is a standard 1.25mm SH1.25 2 pin type connector. VERY IMPORTANT! Ensure the polarity of the battery is correct before connecting it!

For additional information on Heltec's product page, click here.see this page:

For additional hardware information, click here.see this page:

To view the PDF Schematics, click here.see this page:


  • ESP32
  • WIFI
  • Bluetooth
  • LoRa node chip SX1278, 433 to 510MHz
  • 8 MB of Flash
  • Lithium battery interface, 500mA Max charging current, SH1.25-2 connector
  • Micro USB connector for power and serial interface to ESP32
  • CE Certificate
  • Microprocessor: ESP32 (dual-core 32-bit MCU + ULP core)
  • Micro USB interface, ESD protection, short circuit protection
  • Onboard 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
  • 0.96-inch 128*64 LED display
  • USB via CP2102 USB to serial port chip
  • Support the Arduino development environment
  • Heltec provides 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;
  • Size: 51 x 25.5 x 10.6 mm

Electrical Features

Electrical FeaturesConditionMinimumTypicalMaximum
Power SupplyUSB powered(≥500mA)4.7V5V6V
Lithium powered(≥250mA)3.3V3.7V4.2V
Power Consumption(mA)WIFI Scan 115mA 
WIFI AP 135mA 
LoRa 10dB output 50mA 
LoRa 12dB output 60mA 
LoRa 15dB output 110mA 
LoRa 20dB output 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

Package Includes

1 x ESP32 module with LoRa and OLED
1 x 433MHz antenna with IPEX(U.FL) connector
2 x 18 pin, 0.1" male headers

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Weight15 g



Wired Technology

Wireless Chip

ESP32, SX1278

Flash Memory

Chip Family