Quote Originally Posted by Snap View Post
I can still get the light to flicker with DC motor noise. I give up. I hate electronics . I am going to be a carpenter and make matchstick rocking chairs.
Yeah, and then you will want to automate the process with a PIC.

I bet when you "rev" one of these cars you can here it on a radio and see it on a TV.

The amount of current going through these motors will also produce a far amount of EMF.
All of this you know.

Faraday Cage = Coffee Can

Place the circuit board inside a coffee can with the open end pointing away from the race track.

I say this because it is made of steel. Aluminum will work for RF, steel will work for RF and EMF.

This should route the RF and EMF around the PIC. For the same reason I use only steel enclosures around projects that will be in machine/welding shops.

Also, a capacitor to ground from the IR pin may help act as an RF filter.