I am trying to trigger a transistor with my arduino BT board. Everything works great except for this last little issue.
I have a npn transistor(9016) set to power a relay. When I set a pin on the board HIGH to trigger the transistor it doesn't work. But if I manually set it high it works.
I really thought the HIGH signal would be strong enough to trigger the transistor...
[EDIT] Never mind. I used an opamp to increase the voltage. Works like a charm. It is to control a Glade Sense and Spray from an IRC channel. A complete write up on the project will be posted on my site in the next few days. http://kbcarte.wordpress.com/