Solenoids (a type of electromagnet) are at the heart of pinball machines, and at one time, many other machines. They work by inducing a magnetic field using a coil of copper wire. This makes them ideal for pushing or pulling mechanical things fast and with force. They have become unnecessary […]
The post Convert a Pinball Score Reel into a Clock appeared first on Make: DIY Projects, How-Tos, Electronics, Crafts and Ideas for Makers.
[original story: MAKE » Arduino]