Build Your Own Invention. With your MicroKits theremin, you can create music and sound by waving your hands around electric fields! Learn Science & Engineering. Discover the physics of electrical capacitance and practice working with real electronic parts. Easy to Follow Instructions. Colorful 22 page instructional booklet. Build step by step, with breaks to check your work and learn how your circuit works. No Tools Needed. We make it easy to build your own DIY kits. Everything you need is in the box. Start creating electronics without having to learn soldering, and simply place parts in the breadboard to connect. Yes, batteries included too!