Step 4Building the led circuit.
Basically the circuit is 2 sets of 4 leds hooked up in parallel.
Hsandford has a guide written up on another way of doing this, It is a bit more complicated, but will produce better results and less problems overall then this method, you can read his guide here. http://howardsandford.com/blog/flashing-leds-audio-meter-avr-attiny-guitar-pickup-wiring-sound-following-circuit/
Using your diffuser as a guide, build the part of the circuit containing the leds only. if you connect the 2 leds circuits together, there will be no way to put them into your guitar. Make sure the 4 leds will fit into your guitar with a little room to move around.
Remember to connect the leds + to - or one or the set incorrectly soldered will not work. It's a huge pain to go back and fix.
Connect wires to one of the led sets on the + and - side of the outer leds.( make these wires pretty long, they will need to be able to reach from the top of the top pickup to the bottom of the bottom pickup, so make the wire about the distance between the two.See picture.) In the next step you will connect these 2 wires to the 2nd set, and then to the battery to complete the circuit.
** Test them before going onto the next step.
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