I set this one down some time ago but it was my goal was to build an 8 step sequencer with a 555 Timer and a 4017 Decade Counter.
I know this shit is old school but you gotta learn somehow.
4017 decade counter
perf. board or bread board
I picked up a few 4017s from Jameco Electronics for like .40 cents each.
The rest of the stuff I got from a local Radio Shack.
The 555 timer produces an oscillating square wave, which triggers the 4017 decade counter IC, 8 of which its outputs are connected to LEDs. I have the counter set to reset after 8 steps, by simply connecting the next output pin to the reset pin. The green wires are the outputs of the 4017.
For an example check my video.
Suggestions and/or inspiration would be greatly appreciated. I may pick this project up again.
- Should each output of the 4017 Decade Counter be connected to a separate tone generator?
- Should I connect all of the outputs to the same tone generator and vary the frequency of the tone via a potentiometer connected in between each out output of the 4017 and the tone generator? ...and if so some direction as to the implementation would be greatly appreciated.