Recent­ly, I stum­bled upon an adver­tise­ment for this object. It is a gad­get called Blink(1), which can be plugged into a USB port and which has two col­or LEDs, one on top and one on the bot­tom, that can be … Con­tin­ue read­ing →

I want­ed to build a device that can light in dif­fer­ent col­ors, and where the col­ors can be con­trolled from a com­put­er. My idea was to hook it up with a com­put­er, who then should sig­nal some state by light­ing … Con­tin­ue read­ing →