Strange title perhaps, but bear with me and I think you will get it. I am comfortable boasting when it comes to software, but with eletronics it's the other way around. I can not understand how Jim et al can move their way around such stuff with the ease they do... Here goes:
I have a remote control that I want to operate from an AVR instead of with the thumb [*]. The remote has those pushbuttons where there are two "contact islands" on the PCB and a dome of conductive rubber (I suppose) above which connects the two islands when pressed against the PCB.
I would like not to need to understand the circuit on the PCB, so I'm hoping that I can just connect some BJTs or FETs or something to the islands and control them from an AVR. (There are either exisiting vias or ample place to drill holes so that I can solder in the wires).
Not knowing anything about the chip on the remote PCB, or the mess of discrete SMT components, or the meandering track which I suppose are antennas or maybe resistors:
Is this doable? How? Good advice?
[*] Happy I'm not asking about doing this with an ARM. "operate it with an ARM in thumb mode instead of the thumb of my hand" might be confusing. Moving the remote to the other hand might imply "thumb-2" etc... :D