Stepping Switches

101

01:05:13

I was provided this circuit for a project of mine and I can't get it to perform.
1) Trigger the 555 timer. 
2) Then you have a short time to do the 3 NAND switches in order.
3) The NOR switch (bad step) is a reset.
4) Wrong order should reset
5) One set of leds should be on and switch over as each step it switched.
 Any one help? TIA.

published 7 years ago

razzle308

7 years ago

I made a bit of progress. Switching in order is ok. Switching out of order doesnt reset and the time out doesn't reset.

razzle308

6 years ago

No one able to help?

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