Necessary to think about wire interference for long ribbon wire?

Other Hardware General Electronics
4

There is going to be:

  • a piezo buzzer on 9V, which will give short beeps but also more dynamic sounds over pwm
  • a vibration motor on 3V, probably going to give short bursts (e.g. 100ms on, 900ms off)
  • a three digit 7-segment LED display, connected to a few daisy-chained 8-bit shift registers, so only three wires in the ribbon (relatively fast updates in clock, latch and input wire)
  • a servo motor on 5V which is updated constantly

Hope this helps...