I wait for the stepping motors to arrive from China
FYI printers contain step motors and obsolete printers are everywhere...
Printers may also include optical encoders which you can use to get smoother starts and stops than is possible with a normal stepper. Bonus points for achieving that without using digital logic to manage the speed.
I got one this week for villa-junior's christmas pressy. Hope he understands what the fuck to do with it - I understand about 3 words on this thread.
An Arduino starter kit might get him more interested in the physical experiments side of things, and you can connect an Arduino to a Pi using USB, Bluetooth, ZigBee... I should get on with my robot project.
Printers may also include optical encoders which you can use to get smoother starts and stops than is possible with a normal stepper. Bonus points for achieving that without using digital logic to manage the speed.
An Arduino starter kit might get him more interested in the physical experiments side of things, and you can connect an Arduino to a Pi using USB, Bluetooth, ZigBee... I should get on with my robot project.