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:
heltec.org/project/wifi-lora-32/
For additional hardware information, click here.see this page:
heltec-automation-docs.readthedocs.io/en/latest/esp32/wifi_lora_32/
To view the PDF Schematics, click here.see this page:
99tech.com.au/m/esp32-sx1278-oled-ht_schematics.pdf
Features
- 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 Features | 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 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