For the hardware, you need: An Arduino Nano (or similar). An RX470-4/WL101-341 433 Mhz RF receiver. Can be bought as a sender-receiver pair for cheap from AliExpress. Don't forget to solder the ...

Building radio receivers from scratch is still a popular project since it can be done largely with off-the-shelf discrete components and a wire long enough for the bands that the radio will receive… ...

🧠 Working Principle A potentiometer acts as the Synchro Transmitter, generating an analog voltage representing angle. Arduino reads this analog input. The value is mapped and sent to control a servo ...