I wanted it to have selectable step count, so I installed a rotary switch connected to the “RESET” on the schematic.
However, it works strangely:
- Up until 7 steps: it works without problem.
- If set to 8-15 (N) steps: after the Nth step the first IC is reset, waits a step, then starts counting again. The second IC is not reset and finishes the “16 step” sequence, so both ICs run in parallel until 16, then the cycle restarts.
- If set to 16 steps: the sequence runs once, then stops at step 1.
I tried troubleshooting the stuff but haven’t found the issue. Do any of you have a tip where did I mess up?