For this project, I have selected the Arduino Mega 2560 Pro Mini because it is very small, compatible, and low-cost. Here I have used MG995 servos. But you can choose any low budget or small plastic ...

The central 'motor' of this project is an Arduino mega pro mini (for is size/number of pins ratio and the capability for running the DCF77 library of Udo Klein - you can find that on Github too). A ...