PLL controller for the TSA5511, initially intended to replace the proprietary controller for the DRFS06 exciter by Dutch RF Shop, but it can be used for any other TSA5511 based exciter, operating in a ...
All switches are connected at one end to a pull-up input, and connect to ground on close. The analog input for the food pedal expects a potentiometer (e.g. 10k). Note that the MIDI output is used.