Push button to start. This was made from two of my other circuits. 555 Duel LED Flasher http://everycircuit.com/circuit/6515629678133248 and 1 to 15 Volt digitally controlled http://everycircuit.com/circuit/6399086383857664 But as like early computers random numbers can follow a sequence. Also note to all new comers to Everycircuit. If you click “in Chrome” or tap “in app” on a user names you will see their profile and a list of their public circuits for viewing.
