Electric guitars picks sound waves by using electromagnetic pickup coils. In order o get different guitar characteristics or simply repair damaged coil, you may need to rewind guitar pickup. There are many ways of doing this. Some people do this by hand what is long and boring process. Other attach bobbin to electric drill to turn it faster, but it is hard to count coil windings and it is hard to control. To make this process smooth and controllable, Davide has constructed a pickup winding machine based on Atmega8 microcontroller.
When complete, it became pretty professional device with several handy features. It has a wind counter based on hall sensor. It has low speed motor start, automatic stop once wind counter reaches preset value. There can be up to 99999 windings selected. Motor can turn in any direction. And reach preset maximum motor speed. Motor is interfaced by using standard L298N chip. Settings and current information is displayed on LCD screen with three push buttons.