I have spent the last 10 years restomodding a classic car. In the space where the 8-track player was I’ve installed a P88rs Pioneer head unit with a plug at the back for steering wheel controls. I have an Aerpro universal steering wheel adapter and know the Pioneer resistor values I need to use to get my headunit to do Volume up and Volume down and also Source/mode.
I have my eye on a rotary encoder with detents (i.e. it pulses) and a momentary push switch on the shaft. I’m not sure if it’s the one I need.
I don’t have any buttons on my steering wheel but I do have a spare knob on the dash - the old “Radio Balance” knob - where I could put the rotary encoder and plenty of space behind the dash for a small decoder.
I need to know what I need to buy (and do!!, especially do!!) to send three simple electric pulses to the steering wheel adapter when the knob is turned.
It’s a 5 volt circuit and the 3 output wires of the circuit will have the appropriate resistors on them to do the Vol+ , Vol- , and Source.
I have an arduino Uno R3, a breadboard and solder less wires in my basket. What should be my next step? I’ve been reading Arduino forums and talking to various electronics suppliers but I’m still very confused.
It can’t be all that complicated surely? It’s a simple conversion of digital information to electric pulse.
Any help or advice anyone can give me will be much appreciated. There are a lot of people over the years where this idea has been floated but I’ve never seen a successful conclusion.
Cheers - and hi as a new user ( and new to this sort of electronics) - Jeff