reversing dc motor with ne555

Discussion in 'The Projects Forum' started by bojan1975, Nov 5, 2013.

  1. bojan1975

    Thread Starter New Member

    Oct 23, 2013
    Hello. Please help. I need circuit for this.
    astable ne555 circuit for starting motor 12v dc.
    Motor start and run forward about 30 sec, than stop about 5 sec and then start reverse about 10 sec, again stop 5 sec and start forward 30 sec ....... continous
    This is dc motor reversing circuit with pause between forward and back
    Thanks advance
    Last edited: Nov 5, 2013
  2. BillB3857

    AAC Fanatic!

    Feb 28, 2009
    Although possible, it would be complicated. Have you thought about using a microprocessor? Code would be fairly easy with one of them. Then you could use an H-Bridge for the forward/reverse function with the micro doing the timing/sequence.
  3. bojan1975

    Thread Starter New Member

    Oct 23, 2013
    Thank you Bill... But i didnt work with microprocesors. I know how h bridge work. I tested motor with astable curcuit ne555 with h bridge and he works but i dont have pause (stop) between forward and back. Motor running fast forward and immediately fast backward. Thank you for reply
  4. Ramussons

    Well-Known Member

    May 3, 2013
    You could do it using a couple of 555's and a Flip Flop.

  5. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    You could also do it with an H-bridge driven by a CD4017 counter with a 5 sec clock period. Counts 1-6 = forward, count 7 = off, counts 8-9 = backwards, count 10 = off.
    elec_mech likes this.