I'm new to Arduino but learning an awful lot in a short space of time. All this is because I want to learn electronics, with already being an IT specialist so the programming side may be easier for me than most beginners.
I have a project that I want to do, firstly with the Arduino and then see if it is possible to do without it.
Basically I need to use audio as a switch to simply flip a relay or for ease at the moment just light some leds.
The audio socket on the laptop is only sticking out 200ma so I'm guessing I need to amplify this a bit as even a transistor (as far as I know) requires at least 0.6v to trigger. I'm sure it will also be too low for the board to pickup on the pins.
Does anyone have any ideas on how I can get over this? It would be nice if I can get this working with and without the Arduino as the project may go live and require 2 or 3 units to be used and buying extra Arduino boards may make it too expensive.
Oh I have the Uno should you need to know.
Thanks in advance for any help.