Klik is a synchronisation device that enables you to make analog, rock solid sync signals from your computer and your HW synths. For all the features of Klik go here. Now you can build this device on your own as a DIY kit.
You can build the OMSynth Mini Lab on your own! It is a circuit development and performance interface designed to help inventors quickly build and experiment with creative circuits. It was designed with beginners in mind but is perfectly suited for seasoned builders and complex circuit development. For more info go here.