Re: Cheapest object sensor on the market!

How about the crude touch-sensors from early tv remote controls (think
70th)?

These where just two electrodes (part of the PCB) and a very simple
analog transistor-circuit that measures the presence of body-resistance.

Won't work for users with gloves on, but it will be cheap for sure.

Nils


Thanks Nils, as I will try your advice once i ran our of the other options
as touch would be my last one.

Do you have another option (not touch) as cheap as the one above that
detects within 50mm to 100mm?
.