towndrowmatt
New Member
Need a bit of help here( i'm a mech engineer so i'm right out of my depth please be gentle).
Need to find a way of turning on a LED through about 6mm of glass. was originally going to use a reed switch but that will conflict with other functions.
was thinking along the lines of some sort of induction/ transponder sort of thing. LED can have an active supply. Button cell battery would be ideal to keep size of component down.
Any ideas would be really wecome.
regards
Need to find a way of turning on a LED through about 6mm of glass. was originally going to use a reed switch but that will conflict with other functions.
was thinking along the lines of some sort of induction/ transponder sort of thing. LED can have an active supply. Button cell battery would be ideal to keep size of component down.
Any ideas would be really wecome.
regards