I don't believe the proprietary IC has any involvement in the circuit I need. What I am doing is simply switching 2.85 volts. I shared that it was an IC more for purposes that I am not switching a heavy amp device like a motor or something. Basically today I have a mechanical switch that shorts a 2....

[/attachment]Appreciate the advice of just using the GPIO. Good with that. So connecting to the GPIO I have a couple of question and have posted a diagram that might help. In the diagram I have labeled a box A and a box labeled B. In the B box I believe this needs to be a transistor. Exactly what tr...

I am targeting the Raspberry for this but I would like portability and that is why I am using USB. I have taken the current readings and what I found: - Mechanical switch open there is a current of 0. - Mechanical switch closed the current is 33 when multimeter is set to 2000 and the funny u symbol....

The voltage when the switch is open or off is 1.5 on the voltmeter when set to the 20m setting. I am not sure if this is 15 milli-volts or 1.5.

With the multimeter I will need to look up how to check current. Appreciate the help!

I am a complete newbie to electronics with back ground is computer science. I have a manual switch today that when triggered causes a proprietary small microprocessor to do some things on the back-end. I put a volt meter on the switch and when triggered it was 2.84 volts. I want to replace the manua...