Recent content by Peter Murphy

  1. P

    Using 555 & shift register for snooze alarm

    Hi there, I just joined so thank you for your patience! I want to make a snooze alarm that has three timings - press a button once to delay alarm ten minutes, twice 20 and 3 times 30 minutes. I want a vibration alarm to go off after each elapsed period along with a different coloured light. I...