Step 8: Make a bed for the LED.

I used a wooden stick to make a bed for the LEDs. This is to avoid them to be pushed into the pedal's case and to protect them from rattling. I just superglued it to the inside of the case. No rocket science here.
<p>Question: Why do you list the needed resistors as 100k in the Materials needed when schematics show only 4k resistor between battery and LED? I am novice and need this type of info. Also- anything special about the off/on toggle switch? looks like you used 3 amp, is this best or necessary? or just size for the drill bit?</p><p>Thanks.</p><p>timothyr979</p>
<p>Sorry for the late answer. I changed the resistor's value because during construction I changed LEDs. There are LEDs of different size and power rating, and the resistor should match the current provided by the battery. You could use a simple AA battery by changing the resistor's value.</p><p>The on/off toggle switch can be of any rating you want, I just used one I had lying around. Some time ago, I decided to substitute the toggle switch for a recessed push button, because the toggle was switching to ON during transport and handling. </p>
How do I invert the switch? When I turn my Vibrato on, it turns the light off.
Sorry to be this slow to answer. To invert the switch, just put the LED ON wire (the red one in the schematics) on the opposite side of the switch.
I cant help but wonder why you opted to use a battery wrapped up in tape over a 9v clip, or for extra hack points a paper binder clip that has been bent out of shape
I'm not sure what is your question about (maybe it's because English is not my native language), but I'll try to asnwer it as good as I can. I wrapped the battery in tape to avoid short circuits. Since the footswitch should withstand rude handling, it's possible for the battery to be shifted from its place and touch part of the wiring. If this happens, the metal skin of the battery could create a short circuit, and therefore a malfunction. You could use tape (as I did) or just any non-conductive wrapping such as foam or even a fabric piece. The other half of the process is to secure the battery to the case to prevent rattling and shifting. I used a rubber band, but two-sided adhesive tape can work just as well. The best option could be a plastic battery holder such as the ones used in some electronic products and guitars; these provide a solid placement and isolation, but I just used what I had lying around. Hope this helps.

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