Retro Rotary Phone @Raspberry_Pi Project #Picademy #MakerEd

I was cruising Ebay yesterday and I stumbled across this interesting rotary phone. It's completely self-contained in this cool box. If something is old and self-contained, I always think of different ways I could possibly hack it. I was able to win the auction for this phone for $10.50. The shipping is going to cost more than I paid for the phone. Total: $28.00

I'm thinking that I can hack this guy with a Raspberry Pi 3 and have it set up to stream music. To do this, I will replace the speaker in the headset and the receiver with another speaker so the handset becomes the speakers for the Pi. What I really want to do is have the button that the receiver releases when it is picked up be the on/off button. In theory, that should be a simple GPIO connection, but I'm not 100% sure on that. Using the receiver button saves me from having to install a separate button or running a python script on boot. I can easily add the microUSB port to the phone for charging. I could run it through the old phone port. 

I wanted to share the very beginning of this project because I thought it was cool and to ask for any suggestions on using a button to turn the Pi on/off. I'm happy to accept in coding help if you have an idea about the button.