One of my transport colleagues suggested to mix turntable and rotary dial phone:
- Rotary dial is placed under the plate
- Arm powers the dial
- Like a DJ, you partially rotate the plate to make a number
- Hint: make a vinyl disk with pulses that’ll be read by reader arm!
An evolution of thaty project would be “disk call”: saving pulses or dial tones into a disk and play it to compose a phone number.