Theresa Simmons (Theresa)
Post Number: 160
|Posted on Thursday, May 27, 2010 - 1:21 pm: || |
Neither of those sound sources can power an 8 ohm speaker.
They use 32 ohm earphones.
However, if you see the laser light flickering in time to
the music, you are modulating it well enough, and you should
If you are using the piezoelectric earphone, it may have become
polarized by static electricity from your fingers. Drop it from
a height of about a foot onto a table or the floor to generate
enough electricity to depolarize it.
You can tell if the earphone is working properly by touching the
two bare leads together. If you hear clicks and scratches in your
ear as you touch them together, the earphone is working.
If you are using an amplifier instead of the earphone, test it by
holding the photocell up to a fluorescent light. You should hear
a tone when you do that, because the light is flashing on and off
120 times a second.