View Full Version : Optical Switch w/Interrupt mechanism

11-10-2004, 09:14 AM
A good while ago, someone asked about using optical sensors for limit switches, and my knee-jerk reaction was "bad idea with so much dust around."

However, I ran across this little assembly at All Electronics:

which could be enclosed in a dust-proof housing (a cardboard box...).

For 75 cents per axis, it might serve?

11-10-2004, 09:51 AM
With the moving part built into the switch, is there really any benefit over a mechanical switch?