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i think so for a bad wiring, i verifie all the solder and they looks ok.
the power supply is a 18V i have buy with the kit.
It give 17.8V with a multimeter.

Ok for the led, i understand  ;)

And for your suggestion i look at all composent and i don't find any problem with the multimeter...
But i don't try with a audioprobe, i will make it.

Thank you kevin :)
I'd guess there's a wiring issue or a solder cross if you're getting bad noise in the signal. But that also could have to do with the power supply you are using (bad filtering). I could be wrong though I've never worked on a forum vibe.

The LED is still on when bypassed likely because the pedal is still getting power. This is normal with effects. You can rig the cancel function or part of the LED to turn off when bypassed.

I suggest you dig up sufficient information about the effect and how to debug circuits. Throw together an audio probe, grab a multimeter and explore the hell out of the circuit. Follow the signal with an audio probe using the schematic and wrap your head around the fundamentals of how a guitar effect works. Start at the clean input, follow the signal till it gets nasty. Whatever part/area you stop at is suspect to issues and should be observed further.
Building your own stompbox / Ic sockets.. recommend good ones
« Last post by lapsteelman on Today at 06:49:20 AM »
For years I had a stash of machine pin sockets (8 pin). I can't remember the brand. I picked them up surplus.  Stock was getting low, so I picked some up from Thai Shine (Tayda)... They don't hold the IC nearly as tight as the old ones... Small Bear has the Mill-Max.. are they better?

Digital & DSP / Re: DIY Custom MIDI Foot Controller
« Last post by markseel on Today at 06:47:57 AM »
Wow - really awesome.  And it looks great!  :D

You control this with your controller:
Digital & DSP / DIY Custom MIDI Foot Controller
« Last post by Blackaddr on Today at 06:41:13 AM »
I've actually converted my entire rig over to digital modelling, so I needed one helluva MIDI Foot Controller. Unfortunately I wasn't able to find what I wanted on the market, so I set about building my own.

Here were my requirements:

- atleast 3 or more foot switches for sending MIDI CC (to change effects on and off)
- two foot switches for sending program/preset changes.  I.e.  previous/next.
- a couple knobs*
- a graphics display that doesn't look like 1990s technology
- the abilty to program labels into presets.**
- the abilty to configure the device (and labels) using a modern app on my phone.***
- supports an external footswitch or expression pedal
- supports latching or momentary switching

The showstoppers:
* - I have to have knobs. I'm trying to seamlessly replace a complicated pedalboard. I need knobs to tweak effects just like on the real pedal. Why the hell do MIDI foot controllers have way too many switches, but ZERO knobs!

** - I will not remember what switch '2' on preset '8' does.  I want the display to use real names for the preset (like song names) and some kind of label that tells me what the switch does, like "DY" for delay.  I do not want to use a piece of paper and a secret decoder ring to figure it out in the middle of a show.

*** - I want to setup and label all my effects and preset names according to my setlist on my phone or computer then just program it to the device. I'm not gonna use that 'spin-the-knob-and-set-one-letter-at-a-time' to enter names.

It took about 2 years of hardware and software design but it's finally done. I've been using it every week with my band for about 1.5 years, from first functional prototype to final design.

What do you guys think?

Here's a picture of three sample screens from the device on the left, and what the app looks like on the right when you build a setlist.  The EFX Control screen sets the preset name at the top (in this case it's my 'default chorus' preset, as well as showing the value of all three knobs, and has indicators for the four programmable switch settings (not all four are shown in this example).  While you are turning a knob it switches to a circular graphic with indicator to give the feel more of tweaking a knob, and less setting the time on a digital clock.

It has:
- the two stomp switches to navigate and activate the next/previous preset. 
- central knob functions as a toggle between Preset Navigation and EFX Control modes/screens.
- in EFX control mode both stomp switches can control effects, plus 2 of the 3 knobs also have built in push buttons for toggling additional effects.  All 3 knobs are available to control effects as well like volume, gain, etc.
- an external jack for either an expression pedal or an external footswitch
- all stomps, pushbuttons and external footswitch can be configured for latching or momentary operation.
- Preset Builder application runs on Windows or Android
- programming and backup of presets is done over the MIDI cables themselves.

I've also got a new article and blog post about how this MIDI foot controller integrates into controlling my entire gigging rig.

Build A Live Software Rig

Live Sound - Man In The Box
Thanks for the replies. My review sounded too negative, but I didn't mean to sound that way. My goal was really to link up info about the circuit that I found on various threads.

I like the pedal, and I've gotten some good sounds out of the Trem Lune. All of my concerns were pretty minor--The build doc needs work (no mention of the indicator LED, schematic does not match layout, PCB layout does not exactly match layout in build doc) but these didn't present problems for me. The PCB was fine, I just like gpcb's boards better. The circuit itself is very nice--few parts, easy build! I can get a choppy sound out of it, but it doesn't quite capture what I can get w/my Hummingbird (modded RP circuit) clone. That's ok, it covers a pretty broad range of waveshapes, especially with spacing and symmetry. If I'm not playing with an amp that has tremolo, I'd probably keep this as a mainstay.

The only real problem is that damn speed pot. I'm using the value that's in the Tonepad doc (10k). I can only dial in useable speeds within a narrow range. I've tried 100k, 25k, and 10k linear and audio taper. I don't think a 500k pot would give better results, because the rate of variation across the range would be much higher. Elijah-Bailey, thanks for the tip about the capacitors. I should take a look at the component differences between the vero and tonepad versions.  Could you let me know your cap values? Also, if you use the 100kC taper pot, pls let us know how it works for you and whether you have to change cap values. 
that tell about the J113 transistors
In my country to find 2N5457 or 2N5485 or 2N5952, at best, can be found this doctrine smd and uncomfortable for the selection and installation =)
Hi guys,

I'm french so excuse my future language mistake !!!

I come here to request your help cause i have built a univibe pedal : forum vibe type fv-5 rev 2.
I find a lot informations for fv-5 rev 1a but not for rev 2.
So i wiring it as a rev 1a with cancel/bulb off, lfo led, etc.

My true bypass is ok.
my lfo led is ok and it change it speed light when i turn the speed bottom.
my volume bottom is ok.
i see a différence between chorus and vibrato.


The first problem : my bulb don't works... (and when i touch two legs of q14 the bulb stay really flashy, it's maybe a clue !!!)
The second problem : there is a lot of noise in my ampli when the pedal is on  :icon_cry: (it change of noise with chorus or vibrato)
The last problem : when i bypass the pedal i hear the sound of my guitar as normal but the lfo led continu to flash and oscilate.

Wooa a lot of problem i can't solve alone, if you could help me it will be fantastic !

Ask me for more informations, and have a nice day  ;)

Eddy the frenchy

Here's another take on the effect from a slightly different perspective (well... mine  ;D)
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