You are previewing Snip, Burn, Solder, Shred.

Snip, Burn, Solder, Shred

Cover of Snip, Burn, Solder, Shred by David Erik Nelson Published by No Starch Press
O'Reilly logo

Building It

  1. Look at the schematic in Figure 15-3. We’re going to start by building the optoisolator (located at the bottom of the schematic in the little dashed rectangle). In the old Fender amps, this unit was called a vibrato bug.

    Solder a 470 ohm resistor (yellow-purple-brown) to the base of one leg of the photoresistor. Then, place the photoresistor and one LED snout-to-snout. Cock out the negative leg of the LED (that is the one marked by the flattened side of the LED lens; see Figure 15-4) so that you’ll recognize it later. Now wrap these two together with a strip of duct tape, sealing out as much light as possible.

    Circuit diagram for the Blinkie Tremolo

    Figure 15-3. Circuit diagram ...

The best content for your career. Discover unlimited learning on demand for around $1/day.