Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Winding your own guitar pickup

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. Continue reading

The Amazing DIY Laser Harp

There are over hundred, maybe thousand types of music instruments in this world. Amongst the music instruments, which one you love it the most? Honestly, most people will properly say, “Guitar, piano, violin, biola and blah, blah, blah…” Well, does anyone here ever know about the Harp? Harp is a stringed instrument and it has the plane of its strings positioned perpendicular to the soundboard. According to the ancient history, harps had been invented in many parts of the world in remote prehistory! Believe it or not, the oldest harps has been discovered in Egypt, which its dated 4000 B.C. Well, if you’re have the interest to build your own harp, why don’t you consider to create a “Laser harp”? It might sounds a little bit crazy, but you should try it on! For building this laser harp, you must use an Arduino board to build the DAC system. By the way, the DAC system is the short acronym of “Digital to analogue Converter”, which is generates the signal that moves the mirror of the laser harp. Beside that, you… Continue reading