Hi all,
I'm struggling with something I assumed should be rather easy. I want to make or break contact between two points via software.
I have tried with transistors, darlington arrays and currently testing Solid state relays but I just can't get my head fully around it.
The idea is to make a sequencer for a bunch of circuit bent instruments. I have a number of devices from radios, guitar practice amps, toys, etc. already altered with the usual stuff (pots, ldrs, push buttons). What I need at the moment is to be able to control the connections made by the push buttons remotely so that I can load sequences and improvise on top of.
I thought relays would do the trick but my current tests have not worked. I assumed that just providing the required voltage should make a connection on the pins of the ssr but it is not working. All example circuits I've seen online assume that I want to turn things on/off so there is a shared ground connection to the arduino and additional circuitry. The bent instruments I am using all range from 5 to 9V and I don't want to feed a power source, just control the connection between random points in a circuit which depending on the instrument might be carrying a different voltage.
Is this feasible with SSRs?
Is there any other component that I don't know of that might do the job?
Any pointers welcome