Norway


France-based ElectronicTricks are known for designing PCBs that act as the foundation for specific LoRa-based project builds, such as pagers, shields for the Raspberry Pi, game stations, and a host of others. The company has recently added another addition to their repository of boards with the SnapOnAir Micro Walkie Talkie PCB — a mini LoRa communication platform that uses an ESP32 module, along with a joystick and an OLED.

The base for building a mini LORA walkie-talkie with a joystick, OLED, and ESP32. (📷: ElectronicTrick)

The walkie-talkie uses LoRa communication technology utilizing license-free sub-gigahertz RF bands, including 169MHz, 43MHz, 868MHz (Europe), and 915MHz (North America). The protocol is popular for its long-range data transmission capabilities, which can reach six miles or more depending on the area.

As mentioned earlier, ElectronicTricks only sells the PCB; you will have to populate it with additional components yourself to turn it into a communications device — a 0.96-inch OLED display, small SMD buttons for the joystick, tiny SMD resistors, a power source (USB or LiPo), and an ESP32.

Rendering of the walkie-talkie with a USB port and push buttons for communication. (📷: ElectronicTricks)

ElectronicTricks has uploaded the files and source code to its GitHub page, which includes an I2C library to emulate a mini keyboard on the OLED display (works with ESP32/ESP8266), Arduino test code for the LoRa protocol, and demo for all features of the walkie-talkie. All in all, the Micro Walkie Talkie PCB would probably be a great starter project for those just entering the world of electronics that costs very little to (@ around $15 or so), or maybe use it as a relay for long-range IoT projects.



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