The PRAT pedal, MK2

Post by **Doog** » Tue Jul 08, 2008 9:06 am

I'll have a peek in there tonight.

I managed to pinch a suitable resistor from the aforementioned OD pedal, and made myself some 9V > RESISTOR > LED action, with sexy results.

This bitch is going in the TWAT pedal (better name, I think) tonight, yeah boyeeeeeeeeeeeeeee!

Post by **Mike** » Tue Jul 08, 2008 9:11 am

Nice work.

This is a pedal I made for Fibus recently, you can see the LED and one leg going to the Sleeve (ground) connection of the input jack on the left (which also contains Ground connections to the board and the volume pot) while the other leg connects to the 3DPT via a green wire. The resistor is actually on the cathode of this one (it doesn't matter which side you put it on) - what I do is take some insulation tape and chop it in half lengthways, and then insulate the LED-> resistor and LED->wire sections with it.

Post by **Doog** » Tue Jul 08, 2008 9:22 am

Awesomecool!

In the lil' test, I set it up as:

9v+ > resistor > LED+ > LED- > 9V-

So presumably I need to hook it to the positive connection on the power jack, which happens to be the tip on the RAT pedal?

Post by **Mike** » Tue Jul 08, 2008 9:26 am

Doog wrote:Awesomecool!

In the lil' test, I set it up as:

9v+ > resistor > LED+ > LED- > 9V-

So presumably I need to hook it to the positive connection on the power jack, which happens to be the tip on the RAT pedal?

Run a wire from wherever +9V is on the DC jack on the inside of the RAT pedal. You can use a DMM to confirm this when it's got a power supply in it and a jack in the input jack. Run that to the outside lug on your 3PDT on the same side as your "engaged" position for your mod, like I pictured on the other page. Then connect the +ve end of your LED construction (the resistor in your case) to the centre lug on that "strip" of the 3DPT. Then take the other end of the LED and ground it (you might need to connect it to a wire to get to ground if it's far away from your LED hole). This way when your mod is unenabled the LED is just connected to nothing (i.e, the empty lug on that strip of the 3PDT, but when you engage it, it's connected to power and we get LIGHT.

Post by **Doog** » Tue Jul 08, 2008 9:30 am

Great stuff, thanks a lot dude.

Post by **Mike** » Tue Jul 08, 2008 9:31 am

No worries, any time.

Post by **Doog** » Tue Jul 08, 2008 7:05 pm

Some of the wiring could be done better, I'll probably redo it at some point, but I'm well happy it worked first time

I switched the pot around so it does the classic CLOCKWISE=GAIN , and that has sorted out the odd taper for some reason; now it's a gradual increase

[youtube][/youtube]

Post by **Mike** » Wed Jul 09, 2008 7:59 am

Doog wrote:I switched the pot around so it does the classic CLOCKWISE=GAIN , and that has sorted out the odd taper for some reason; now it's a gradual increase

That's because it's probably an Audio Taper pot

hahahahah @ Video

Post by **Doog** » Wed Jul 09, 2008 8:02 am

Dammit, the video is all jerky again, even after reuploadin'. Stupid youtube, hates me

Thom · Post by **Thom** » Wed Jul 09, 2008 11:37 am

Mike wrote:hahahahah @ Video

NickS · Post by **NickS** » Wed Jul 09, 2008 11:55 am

Mike wrote:hahahahah @ Video

+1

ultratwin · Post by **ultratwin** » Wed Jul 09, 2008 12:21 pm

bwoooooooooOOOOOOOOOOOOoooooooooooooo!

Post by **Doog** » Tue Jul 22, 2008 8:39 pm

[youtube][/youtube]
Uploading the raw AVI from my pc to youtube has done the trick, it's pretty decent quality! I turned the treble down on the amp, so it's a bit dull sounding, but it ain't bad!

Post by **Mike** » Tue Jul 22, 2008 9:07 pm

Sounds phat dude.

James · Post by **James** » Tue Jul 22, 2008 9:34 pm

The two modes on the Rat sound great. Extremley useable mod.

Post by **Doog** » Wed Jul 23, 2008 8:30 am

No love for the robot socks, eh?

Cheers chapz, I am most pleased.

I'm gonna put the "Ruetz>Stock>Beyond" dial back in on the back of the pedal soon- knowing how the the distortion pot works on the lower settings in in "Beyond" sort of settings, the Wimpy channel is gonna be handy to have at my foot's beck-and-call.

► Show Spoiler

I've also found making the AVI the highest quality and biggest WMV size in Movie Maker has similar decent results. WOOT! Meaning I can edit it properly. Although MM hates these avi files and regularly crashes when you try to do anything involved

Post by **Doog** » Sat Jul 26, 2008 4:35 pm

[youtube][/youtube]
Now has Hot & Scratchy modes too! Ideally it'd be a pot instead of the push-switch, but all the pots I had were way too beefy, they only had an effect on the last tiny turn of the dial. Woootz!

Yeah, Youtube compression IS A PILE OF DOGSHIT. I brought the overall volume down hoping it wouldn't make the compressor kick in, but no such luck. I don't mind stuff being squished, but not if there's like a half-second attack time!

superfuzz · Post by **superfuzz** » Sat Jul 26, 2008 4:38 pm

Thats epic Doog, Good work!. Pavement t0nez. Makes me want a rat. Thanks for the vid.

Post by **Doog** » Sun Jul 27, 2008 9:17 pm

One more and I stop making stupid videos:
[youtube][/youtube]

Reece · Post by **Reece** » Sun Jul 27, 2008 9:21 pm

Slick Moves