#1
Ok, I have it up and running, kind of.

Problem: "scratching" is heard when moving either expression pedal, even when a pedal is not activated.

This "scratching" for lack of a better word, is not subtle but very noticeable. Basically it's the same glitching that can be heard when you don't have enough of a buffer size. But I've tried going up and down on the buffer size and it doesn't help.

Any idea on a fix?

Guitar>Focusrite 2i4>Midi in and out>FCB1010

The Focusrite also goes out to my amp's aux in and from there to my stereo top slant.

Using TH3


It also seems to be starting the foward (or up) sweep of the expression pedals in any program at about half way, and not going all the way through the sweep...That is, this is what the programs show. TH3 is the example program for now... but also guitar rig 5.

For further aide: Here is the read-out of the left expression pedal when swept for it's full range from heel-down to toe-down.:

(Quick note: When calibrating, 0 does start at heal-down all the way, and works all the way to 127 at the top. Only in the programs they don't start to recognize it till half way.)

BYTE: 1     	0XFFFFFFB0 
BYTE: 2     	0X1B 
BYTE: 3     	0X0B 
BYTE: 4     	0XFFFFFFB0 
BYTE: 5     	0X1B 
BYTE: 6     	0X16 
BYTE: 7     	0XFFFFFFB0 
BYTE: 8     	0X1B 
BYTE: 9     	0X19 
BYTE: 10     	0XFFFFFFB0 
BYTE: 11     	0X1B 
BYTE: 12     	0X1A 
BYTE: 13     	0XFFFFFFB0 
BYTE: 14     	0X1B 
BYTE: 15     	0X1C 
BYTE: 16     	0XFFFFFFB0 
BYTE: 17     	0X1B 
BYTE: 18     	0X1D 
BYTE: 19     	0XFFFFFFB0 
BYTE: 20     	0X1B 
BYTE: 21     	0X1F 
BYTE: 22     	0XFFFFFFB0 
BYTE: 23     	0X1B 
BYTE: 24     	0X20 
BYTE: 25     	0XFFFFFFB0 
BYTE: 26     	0X1B 
BYTE: 27     	0X22 
BYTE: 28     	0XFFFFFFB0 
BYTE: 29     	0X1B 
BYTE: 30     	0X24 
BYTE: 31     	0XFFFFFFB0 
BYTE: 32     	0X1B 
BYTE: 33     	0X26 
BYTE: 34     	0XFFFFFFB0 
BYTE: 35     	0X1B 
BYTE: 36     	0X28 
BYTE: 37     	0XFFFFFFB0 
BYTE: 38     	0X1B 
BYTE: 39     	0X29 
BYTE: 40     	0XFFFFFFB0 
BYTE: 41     	0X1B 
BYTE: 42     	0X2B 
BYTE: 43     	0XFFFFFFB0 
BYTE: 44     	0X1B 
BYTE: 45     	0X2C 
BYTE: 46     	0XFFFFFFB0 
BYTE: 47     	0X1B 
BYTE: 48     	0X2E 
BYTE: 49     	0XFFFFFFB0 
BYTE: 50     	0X1B 
BYTE: 51     	0X2F 
BYTE: 52     	0XFFFFFFB0 
BYTE: 53     	0X1B 
BYTE: 54     	0X31 
BYTE: 55     	0XFFFFFFB0 
BYTE: 56     	0X1B 
BYTE: 57     	0X33 
BYTE: 58     	0XFFFFFFB0 
BYTE: 59     	0X1B 
BYTE: 60     	0X34 
BYTE: 61     	0XFFFFFFB0 
BYTE: 62     	0X1B 
BYTE: 63     	0X36 
BYTE: 64     	0XFFFFFFB0 
BYTE: 65     	0X1B 
BYTE: 66     	0X38 
BYTE: 67     	0XFFFFFFB0 
BYTE: 68     	0X1B 
BYTE: 69     	0X3A 
BYTE: 70     	0XFFFFFFB0 
BYTE: 71     	0X1B 
BYTE: 72     	0X3D 
BYTE: 73     	0XFFFFFFB0 
BYTE: 74     	0X1B 
BYTE: 75     	0X3E 
BYTE: 76     	0XFFFFFFB0 
BYTE: 77     	0X1B 
BYTE: 78     	0X40 
BYTE: 79     	0XFFFFFFB0 
BYTE: 80     	0X1B 
BYTE: 81     	0X42 
BYTE: 82     	0XFFFFFFB0 
BYTE: 83     	0X1B 
BYTE: 84     	0X44 
BYTE: 85     	0XFFFFFFB0 
BYTE: 86     	0X1B 
BYTE: 87     	0X46 
BYTE: 88     	0XFFFFFFB0 
BYTE: 89     	0X1B 
BYTE: 90     	0X48 
BYTE: 91     	0XFFFFFFB0 
BYTE: 92     	0X1B 
BYTE: 93     	0X4A 
BYTE: 94     	0XFFFFFFB0 
BYTE: 95     	0X1B 
BYTE: 96     	0X4B 
BYTE: 97     	0XFFFFFFB0 
BYTE: 98     	0X1B 
BYTE: 99     	0X4E 
BYTE: 100     	0XFFFFFFB0 
BYTE: 101     	0X1B 
BYTE: 102     	0X4F 
BYTE: 103     	0XFFFFFFB0 
BYTE: 104     	0X1B 
BYTE: 105     	0X51 
BYTE: 106     	0XFFFFFFB0 
BYTE: 107     	0X1B 
BYTE: 108     	0X52 
BYTE: 109     	0XFFFFFFB0 
BYTE: 110     	0X1B 
BYTE: 111     	0X54 
BYTE: 112     	0XFFFFFFB0 
BYTE: 113     	0X1B 
BYTE: 114     	0X55 
BYTE: 115     	0XFFFFFFB0 
BYTE: 116     	0X1B 
BYTE: 117     	0X57 
BYTE: 118     	0XFFFFFFB0 
BYTE: 119     	0X1B 
BYTE: 120     	0X59 
BYTE: 121     	0XFFFFFFB0 
BYTE: 122     	0X1B 
BYTE: 123     	0X5B 
BYTE: 124     	0XFFFFFFB0 
BYTE: 125     	0X1B 
BYTE: 126     	0X5E 
BYTE: 127     	0XFFFFFFB0 
BYTE: 128     	0X1B 
BYTE: 129     	0X60 
BYTE: 130     	0XFFFFFFB0 
BYTE: 131     	0X1B 
BYTE: 132     	0X62 
BYTE: 133     	0XFFFFFFB0 
BYTE: 134     	0X1B 
BYTE: 135     	0X65 
BYTE: 136     	0XFFFFFFB0 
BYTE: 137     	0X1B 
BYTE: 138     	0X68 
BYTE: 139     	0XFFFFFFB0 
BYTE: 140     	0X1B 
BYTE: 141     	0X6A 
BYTE: 142     	0XFFFFFFB0 
BYTE: 143     	0X1B 
BYTE: 144     	0X6C 
BYTE: 145     	0XFFFFFFB0 
BYTE: 146     	0X1B 
BYTE: 147     	0X6E 
BYTE: 148     	0XFFFFFFB0 
BYTE: 149     	0X1B 
BYTE: 150     	0X70 
BYTE: 151     	0XFFFFFFB0 
BYTE: 152     	0X1B 
BYTE: 153     	0X72 
BYTE: 154     	0XFFFFFFB0 
BYTE: 155     	0X1B 
BYTE: 156     	0X74 
BYTE: 157     	0XFFFFFFB0 
BYTE: 158     	0X1B 
BYTE: 159     	0X76 
BYTE: 160     	0XFFFFFFB0 
BYTE: 161     	0X1B 
BYTE: 162     	0X77 
BYTE: 163     	0XFFFFFFB0 
BYTE: 164     	0X1B 
BYTE: 165     	0X79 
BYTE: 166     	0XFFFFFFB0 
BYTE: 167     	0X1B 
BYTE: 168     	0X7A 
BYTE: 169     	0XFFFFFFB0 
BYTE: 170     	0X1B 
BYTE: 171     	0X7D 
BYTE: 172     	0XFFFFFFB0 
BYTE: 173     	0X1B 
BYTE: 174     	0X7E
"grateful is he who plays with open fingers" - Me

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Last edited by Outside Octaves at Feb 8, 2016,
#2
Ok, I found a workaround for the pedals not getting their full sweep due to the data not transmitting till half way... simple, open it up and put some opaque white plastic (walmart bag, well a very small strip there of) over the sensors, LMAO. I loose a bit of the total range, as it now starts at 30... but it works. Full sweep.

The only problem left to sort out is the horrible glitching sound... I mean it seriously sounds like the issue that happens with too small a buffer. And yet buffer size changes doesn't affect it.
"grateful is he who plays with open fingers" - Me

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DO NOT CLICK HERE!
#3
My money would be on a faulty pot in the expression pedal.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
#4
Thing is it doesn't use pots. It uses an LED and sensor with acetate in between with a gradient printed on it to block the LED's infrared (or not).

The issue seems to be that it's over saturated with the light.

But there does seem to be that weird glitch though... with and without the mod.
"grateful is he who plays with open fingers" - Me

┌∩┐(◣_◢)┌∩┐

DO NOT CLICK HERE!
#5
You could try replacing the photovoltaic receiver. ie the photo-resistor.
Or has the moving window been damaged?
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
#6
I just put an opaque piece of plastic in between it... works for now. Basically has it starting at the heel on 30... so it seems to be working for now . It's just over saturated I think... or bad programming.

Also, I tried hooking it up to my lx1200h vampire, and the wah works flawlessly, if a bit muted (their fault)... no crackling. It's something to do with the focusrite, or windows 10...
"grateful is he who plays with open fingers" - Me

┌∩┐(◣_◢)┌∩┐

DO NOT CLICK HERE!
Last edited by Outside Octaves at Feb 10, 2016,
#7
OH MY GAWD! REALLY! THE FIX WAS SOOOOOOOOOOOO simple!

Thank you cath for the suggestions, it turns out that it was the friggen driver! OI!

I downloaded what was and is seemingly the exact same version driver, but uninstalled the "current" one... and put the "new current" one on... guess what... works flawlessly now!

Same exact driver! Though, I think I know what might have happened. I upgraded a good while ago now to windows 10... never did have to reinstall that particular driver.... as that was one of the things that worked... I'm willing to bet that the driver was something that needed reinstallation.

At least it's fixed though... no more pops or clicks or scratchy sounds!
"grateful is he who plays with open fingers" - Me

┌∩┐(◣_◢)┌∩┐

DO NOT CLICK HERE!