Hi Guys,
Thanks for the interest in my project. I have the 555 timer set up with the following resistors; 10k from 5 vdc to pin 7, 100k variable from 5vdc to pin 6, jumper from pin 2 to pin 6, and a 15uf capacitor form ground to pin 2. I am able to control the speed of the sequencing with this setup, however, the pnuematic valves which i am controlling will stay open to long with this circuit. I was hoping to find a way to change the square wave pattern from the 555 to something more assymetrical---- off 1-2 secs. on .5 second.