14
15
Sample
©
2017 Microkits
MicroKits.cc for more info
Important: Turn the power “
OFF
” immediately if the circuit does not
work. Leaving power on could damage or overheat the battery or Micro.
When you’re ready, turn the power “
ON
”. What happens? You’ll know your circuit is
working when the you hear a tone! This means that power and speakers work.
If nothing happens, don’t worry! Just turn the power “
OFF
” and check for mistakes,
a process called troubleshooting. With a bit of looking you’ll find what to fix.
♪
!
Let’s think about what’s going on. Right now, I’m connected to a
speaker, a battery, and a capacitor. The battery gives me power, and
the capacitor stores extra energy for when I need it most.
With this power, I create an electrical signal that I send to the speaker. When the
signal changes, the magnet inside the speaker moves. This creates sound that you can
hear. I’m only playing a single note now, so let’s add parts to build a real theremin!
MICRO
OFF - ON
Power
Signal
131 Hz
5V
TICK
MICRO
♪
♫
♫
♪
♪
TICK
MICRO
♪
♫
♫
♪
♪