SparkFun Forums

[booshtukka]

Hi,

Sorry if this question is simple, but I'm very new to all of this.

I have an RF remote control I want to control from the Tessel. It's comprised of push buttons. As a step one, I'd like to be able to connect a cable to each end of a single push button, and simulate pressing the button via the Tessel.

I'm sure this is easy to do, but I can't figure out how. Can someone help?

Antony

[booshtukka]

Is this something that can only be done with relays? Apologies if it's a silly question.

[DanV]

Certainly the relays would be the best method to do this. Some may disagree.
That would eliminate any mixing of the two circuits.
This is often known as using a 'dry contact' closure to basically replace a pushbutton (which is also just a set of contacts).
I'm sure someone could devise a circuit with a transistor or other device.
Another method would be to use an optocoupler which separates the circuit optically and isolates them as well.
This is all assuming that the Tessel has outputs available to control the relays.
EDIT: I see (after a little research) that the Tessel does indeed have I/O.