After getting some mini massagers for the fair sex from a discount sale fair, I started thinking about vibration/haptic motor projects again! I’m in the middle of a lot of projects based on small ...

If you’ve ever had to move around in a dark room before, you know how frustrating it can be. This is especially true if you are in an unfamiliar place. [Brian] has attempted to help solve this problem ...

I need two buzzers alternating on / off on one pin. Is it possible to get ‘opposite’ transistors in series? One that grounds when the base goes high, one that grounds on low? In that way they can be ...