In a recent article in Elektor magazine, [Clemens Valens] describes the construction and software for an ESP32 walkie-talkie ... The DIY Walkie-Talkie circuit diagram. (Credit: Clemens Valens ...

According to Joseph, the drone is small and can be made using readily available parts such as an ESP32 module ... As you can see, the circuit board is exposed. The circuit diagram is as follows.

In terms of hardware, it’s the standard SBM-20 circuit augmented with a LILYGO ESP32 development board that includes a TFT display. But where this one really shines is the firmware. With the ...