Twiddle Lock
In brief this is an electronic form of the classic ‘dial combination safe’ (or DCS as they call it in the trade) combinational lock mechanism. This project used a Raspberry-based application that will listen to a button that will indicate you are about to put in a ‘dialed code’, and this dialed code will be sensed by an ADC (MCP3008 chip) connected to a POT(Potentiometer) that is attached to the dial, or in our case just a knob that represents the ‘twiddle knob