unseen wombat
New Member
Okay, so I thought I figured out an easy way to make this circuit for a lucid dreaming mask. (I'm still looking into programming the parallel port of my computer, but I'd like to make something smaller).
I figured I'd use a headphone plug and plug it into my palm pilot, this will go to the base of a transistor (2N3904 from Radio Shack) which will direct 9V to the LED's when the alarm goes off.
For some reason however, my circuit isn't working. The LED doesn't blink when sound comes from the palm pilot.
I've attached a diagram of my circuit. Can anyone see what I'm doing wrong?
I figured I'd use a headphone plug and plug it into my palm pilot, this will go to the base of a transistor (2N3904 from Radio Shack) which will direct 9V to the LED's when the alarm goes off.
For some reason however, my circuit isn't working. The LED doesn't blink when sound comes from the palm pilot.
I've attached a diagram of my circuit. Can anyone see what I'm doing wrong?