Pinewood Derby circuit help needed.
Kim Erickson Telecommunications (ADKE@NMUMUS.BITNET)
Sat, 27 Feb 1993 13:12:21 EST
I don't know if this will be of any help but you might try to use a
small standard mini lamp countersunk so it will shine only on a small
area and use a LDR (light dependent resistor) as a detector. You can
feed the LDR into a LM311 and adjust your level of sensitivity on the
LM311. I used this circuit when taught an OP amp class.
If you have any questions, Write or call.
Terry Howerton Sakima Group, Inc. SCOUTER Magazine Kansas City