Hi All, Can you please offer me some advice: I want to build a bog standard circuit to operate my treadmill speed and incline. Now although this sounds complicated, the idea is actually dead simple. I have FOUR push buttons One for Speed Up, One for Speed Down, One For Incline Up, and finally, One For Incline Down. I want to automate this, possibly using an IC 555 circuit? that will simply "make" the push button contacts, as if "I" was actually pressing the buttons myself. It would need to be timed, and able to operate the FOUR seperate commands, over a period of say, 20 minutes, using a relay output. REMEMBER, these commands are simply a "Make" or "Break" command to operate the individual switches. It is also worth a mention, that I would need to build in several repeat commands, over the said period (Not Just A One Hit) First of all, have I got the right idea, or is this NOT possible? If it is can you please give me the initial steps to getting me started, as I really don't know where to begin! Really Appreciated Guys, Ray.