I was searching for a way to read data from a 3.5mm hack using an Arduino, but I couldn't find a well-detailed, beginner-friendly, tutorial on how to make this, at least how to wire everything and create a simple I/O code. Anyone know a good, beginner-friendly, tutorial about this topic?
PS: I don't want to use a modem like this, I to learn and make it not communicate only with iOS/Android devices.
I was thinking about using my TI-84 for testing, then move to create a remote shutter release for my Canon 60D, and after that move to more awesome stuff like interacting with iOS and Android devices.
My question is not about how to make my TI-84 send the information, I already know that, it's about how to wire the connector to the Arduino to read the information.