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Step 22Adding Light Sensitive Resistors
Using knobs to control the setup is fun, but using the light sensitive resistors (CDS Cells) is really impressive.
To do this you just need to swap out 4 parts.
Take out the two 500k Ohm variable resistors.
In their place stick in the two light sensitive resistors.
Then, take out the two 0.01uf capacitors.
Replace them with the two 0.22uf capactiors.
We do this to drop the pitch of the tone. In many cases the light sensitive resistors cause a massively high pitched tone, and the capacitors just drops that down. You may or may not need to do this, but it's an easy swap.
To use them just wave your hands over the light sensitive resistors. You should heap a change.
To do this you just need to swap out 4 parts.
Take out the two 500k Ohm variable resistors.
In their place stick in the two light sensitive resistors.
Then, take out the two 0.01uf capacitors.
Replace them with the two 0.22uf capactiors.
We do this to drop the pitch of the tone. In many cases the light sensitive resistors cause a massively high pitched tone, and the capacitors just drops that down. You may or may not need to do this, but it's an easy swap.
To use them just wave your hands over the light sensitive resistors. You should heap a change.
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