Hi Brett, I've been using your site for a while now. It's fantastic. I own several slave clocks from Siemens, Bürk, RFT, Peweta, and Pragaton. The slave clocks all require 24 volts. I've recreated the Arduino Pragotron Master Clock with a UNO, and it works perfectly. It's great for the second clocks, but how do I get the code to output minute pulses? I've already commented out and re-commented the sketch, but I haven't gotten anywhere. Perhaps you'll have the time to help me.

Best regards, and thanks for sharing your projects.

Peter