Step 4Start building the circuit and test
Connest all three black audio wires to the black wire on the speaker.
Connect the positive battery terminals together and connect the negative battery terminals together. This will allow you to power off a single battery.
Put in a single battery and turn on all the circuits and see if it works. They should all be playing through the speaker and you should be able to adjust the volume using the photocell.
Don't yet connect the toggle switch or the 1/8 inch mono jack.
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