That is a very beautiful thing.

On the breadboard link - to simplify it - the breadboard just joins the wires that are the same colour

So the black wire coming from the Pi is linked to the black wire attached to the hall sensor.
etc.

This link:

http://kropp.ca/tutorials/raspberry-pi- ... ct-switch/

Looks good to me

You can run LEDs from the GPIO pins on the PI, there is no real need to get USB LEDs
Alternatively there are LED add on boards which plug on to the GPIO pins (eg the PiGlow from Pimoroni)

So here is my current code - based on the one button audiobook player code pi@volumio:/var/tmp$ cat myradio.py #!/usr/bin/env python # Copyright (C) 2012 Michael Clemens # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as...

Well - I have gout something working. I used the capacitor option as outlined here: http://www.raspberrypi-spy.co.uk/2012/08/reading-analogue-sensors-with-one-gpio-pin/ Then I was able to use the python code in that blog page to read the values for each button :D I then used the 1 button audiobook p...

Thanks guys - certainly food for thought - my idea was a chain of resistors with a connection to the gpio pin at various points.

Depending on the button that is pressed the magic 2V threshold will be at different parts of the resistor chain.

but I might try the capacitor route.

Thanks Mahjongg,

I saw the capacitor option, but was not sure how I would code it - as you need to start the process when a button is pressed.

Hi I have taken apart an old Radio/CD system and I am planning to replace the broken CD player with a PI. The CD buttons have a 3 wire connection as follows 1 - Common 2 - Play Button 3 - Other Buttons The other buttons adjust the resistance between pins 1 and 3 as follows: Program: 22K Repeat: 12.4...