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Topics - Guitarmatt

#1
I've built but not yet boxed a Pork Barrel chorus. I'd like to box it with a road rage to run at 15v, plus a compressor so I'll have one stomp shopping for 80s cleans.  I'll be using a small bear bare box for my enclosure so I'll have plenty of room. What compressor would you guys suggest to pair with the Pork Barrel?  Is there a compressor I can run at 15 volts since I'll have it available from the road rage?

Extra info: I already have an Afterlife, an Orange Squeezer and an Xotic SP. I tried out the PB and Afterlife together which is what inspired this idea. If I can't come up with another good option I'll just order another Afterlife board. Any idea if that can run on 15v? I'm also interested in the Engineer's Thumb if I can find a layout small enough to fit in the biz with all that other stuff. A three way switch for chorus only, comp and chorus, comp only would be cool too.
#2
Build Reports / Runt with clipping and Ruetz mods
July 09, 2013, 02:20:29 PM


Here's my first 1590A build, a Runt with two extra switches for clipping diodes and Ruetz mod.  The "engraving" was done with a box knife then filled with sharpie and sanded.

The guts:

I built it with 1/4 watt resistors stood up on end.  If I do another little board like this I think I'll take the time and effort to track down smaller resistors

The video:

The green and gold pedal upside down on the right is my Egodriver build, and the orange one peeking in the other corner is my 5 knob fuzz built on a Hipster board.

I wired up the mod switches by using a little 2x3 bit of perf, much the same way as the pots are wired per the baby build guide.



The clipping diodes bend over below the filter knob.



Solder side:



All in all I like this pedal. I think it will end up with the mod switches flipped on most of the time. I don't really have a use for the standard Rat tone, awesome as it is.  This will end up being a low to mid gain color pedal for me.  But it's good to know the raw Rat tone is there when I  need it.
#3
I've got a Runt that I'm having trouble with. I built up the pcb and rocked the board successfully. With the circuit working well I started on the enclosure. I got the box all ready and checked the bypass switching before putting the pcb in. Bypass worked fine. Next I mounted the board and secured all pots and switches (I added selectable clipping diodes and switchable ruetz mod). I trimmed the 3 conductor ribbon cable I used for in/ground/out and soldered it to the switch. I didn't install the dc jack yet, I wanted to make sure everything still worked before I did.

Everything doesn't still work.

Even at low low low volumes the pedal now squeals and oscillates. The pitch and volume of the oscillation changes when I turn the knobs. Thinking something might be shorting in the enclosure I loosened the knobs and switches and laid the pcb on the table behind the enclosure. The inputs and outputs are still going through the jacks on the box and the switch, but the pcb is completely free. Tried t again, still same problem.

All I did, knowingly, is shorten the 3 conductor ribbon cable carrying in, ground, and out from about 6 inches to about 1 inch, and then connected the ends to the switch.  On visual inspection the board and my off board mods look just the same as when the circuit was working fine.

Any ideas on how I can fix this situation? I'm going to sleep on it for the night, I could add some pics tomorrow if needed.
#4
I'd like to paint a racing stripe down the middle of a British racing green enclosure I got from pedalpartsplus. Then I'd like to put a decal on top and then clearcoat the whole thing. What's the appropriate spray paint to use? And does anyone have an opinion about drilling holes before or after painting and applying decals?
#5
I just soldered up an ego driver board and attempted to rock it before I box it, and got an odd result. The circuit works and all three knobs plus the hp/lp switch do what they're expected to do. But then I noticed that the clip mod switch made absolutely no difference in the sound. Plus the LEDs didn't light at all with the switch in that position. Using my audio probe I can hear that sound is getting to the clipping section just fine, and the switch is working correctly, routing the signal to only one clipping section at a time. 

I saw a similar thread on the forum where the problem was that the particular leds used for clipping sounded too much like the mosfet clipping.  That builder fixed their problem by switching out 5mm red diffused (same as i am using) for 3mm.  To see if this was my problem, I disconnected the wire leading to the led section, so my switch would switch between MOSFET clipping and no clipping. I figured I should really be able to tell a difference between those 2, but once again I could hear no difference. Now I'm at a loss for what to do.

Here are my measured voltageswith the circuit idling and input and output disconnected:
Opamp
Pin 1 and 2: 4.5v
Pin3: 4.25v
Pin 4: 0v
Pin 5: 4.4v
Pin 6: 4.5v
Pin 7: 4.6v
Pin 8: 8.94v

Center pad of clip switch (set to MOSFET): 4.44v
Vb measured off r3 pad towards middle of board:4.44v


Now I don't know a whole lot here, but shouldn't the measurement at the input of the clipping section be higher than vb if it's supposed to clip to vb? Do I actually have everything right and the effect of the clipping section in this pedal is just not very noticeable? I doubt that, since the ocd's clipping to vb instead of ground is one of its most touted features...of course, like I said, I don't know much, so someone please enlighten me!

Btw, I didn't include a pic of the solder side of my board since it's obscured by the pcb mounted pots. I'll of course take those off and resolder them later of needed for a fix.