-Fits min 3 pedals + tuner
-Powered, without daisy chaining a crummy wallwart
-Integrated channel switch
-Spend the least amount of $$$ as possible
Powered pedalboards from powertrain or other companies sell for over $200 online, even an isolated supply can be over $200 on its own. Alot of the components for this were found around the house and the total price was around $80. The case is an old poker case, the channel selector/effects bypass and power supply are built from scratch with a switchable 12v/18v output and 4 isolated 9v outs.
The power supply portion of this project deals with mains supply (120v) voltages. If you have little electronics knowledge/experience DO NOT build the power supply, you will be working with voltages that can be lethal and if setup inappropriately can wreck your gear. You undertake this build at your own discretion and I will not be held liable for any injuries or damage to your gear.
With that out of the way, let's have some fun!
Step 1: Parts!
Some kind of latching box or board that you will be building on, many suitcases can be modified to work. I've used an old poker chip case, it is somewhat limiting in its size and depth (can't fit a wah or big EHX pedals in there) but it's compact, lightweight, and strong enough to keep everything in one place.
-Velcro (about 3-4ft)
The Control Center:
Mine consists of an fx loop (send/return), bypass and channel switch with an LED indicator:
-Project box (I used an old hot chocolate tin, cut to size)
-5 mono input jacks. FX Send, FX Return, Input, Output, Channel switch
**Some amps require a stereo TRS jack for channel switch, be sure to get the right circuit before wiring this up**
-2 DPDT switches (1 latching stomp and 1 toggle). Almost set it up with 1 stomps but it was too cluttered, and I don't have to bypass often.
-1 LED & 470ohm resistor for the channel indicator
** Check out Beavis Audio for a variety of looper/bypass schematics with indicators and mixer controls if you want to really do it up**
-18v transformer (300ma)
-4x 1N4001 diodes or 1x Bridge rectifier
-3x 100uf capacitors, +30v
-5x 10uf capacitors, +30v
-3x 1k ohm resistors (1/4 watt)
-1x 470ohm resistor for LED
-3x LM7809 voltage regulators
-1x LM317 voltage regulator (for a 12/18v output)
-2x SPDT toggle switches
-1x LED &Bezel
-1x 120v 3prong power input
-1x 100ma fuse (used a resetting 'pico' fuse from small bear)
-various nuts and bolts to mount the transformer and power input
-DC power cables for the power cable runs (ebay)
-1/4" hookup jacks for the cable runs (ebay)
**Special thanks to matthegamer463 for the schematic and design influence**
-Drill w/ various bits (Biggest I have is 1/4", something bigger would be helpful)
-Dremmel or rotary tool (especially if you don't have anything bigger than 1/4" drill bit)
-small/med size grinding stone
-Wrenches, adjustable is best
-Soldering iron (solder, hookup wire etc)