Controlling PWMs through hardware

[xanarchyx]

hey guys, I myself have been thinking about this for the last year on and off and with a bit of research found the answer.
Like someone from 111 i believe had posted, use a 555. They are exactly right.

After some testing and troubleshooting i got it down.
you need 1 555 that outputs a steady 50Hz signal. That should go to the trigger pin on a second 555. Use the second one to create the pulse 1-2ms with a pot (50-100K) and around a .2 uF cap.

I used a 556 IC, its got 2 555 built into it, this made it smaller and a bit simpler to wire.


Or.... like someone said you could probably use a vex controller although iv heard there's sometimes problems with that.

I guess if your not very comfortable around breadboards, go with the vex controller.