On Mon, Sep 10, 2012 at 1:39 PM, alan smith wrote: > So looking for a non powered visual indicator..ie...something that change= s color, that would be tripped by the micro that a tech would be able to lo= ok at and say...failed board due to....X > > So when the board is running this "thing" can be controlled and then its = forever changed in state, even with the power off. > > > Can't have smoke...so making a resistor crispy isnt allowed. > > Any thoughts? Something like this? http://www.flipdots.com/ Or a latching relay that has.. some sort of mechanical indicator? I know some large contactors have indicators. Not sure about small ones. There are surface mount fuses. If you could "blow" it and it's visible then you know it's state. Don't ask me if you can actually SEE that a 5 mA fuse has blown: http://www.digikey.com/product-detail/en/0273.015V/F853-ND/91322 --=20 Martin K. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .