SLP Posted May 16, 2006 Report Share Posted May 16, 2006 Hi,I've finished my Mbox Plus yesterday and nearly everything works - but not the Pots.I've connected 6 faders , 6 Pots (The Foot-controller, the Ribbon-controller and the XY-Pad will be added in the future).The Faders work properly, the Bars for the not-connected Controller jitter, but thePots jitter too.I've controlled the wiring about 3 times and I can't see any error.If I pull all the Faders down, the Pots stop jittering.weird :-\What could be the reason for this?slp Quote Link to comment Share on other sites More sharing options...
stryd_one Posted May 16, 2006 Report Share Posted May 16, 2006 Have you followed the troubleshooting steps in the wiki? What were your results? Quote Link to comment Share on other sites More sharing options...
SLP Posted May 16, 2006 Author Report Share Posted May 16, 2006 I've read the MIDI-Troubleshooting page, but it doesn't seem to be a MIDI-problem.I haven't connected the Box to the PC yet. Quote Link to comment Share on other sites More sharing options...
smashtv Posted May 16, 2006 Report Share Posted May 16, 2006 the Bars for the not-connected Controller jitterGround anything "not-connected" and see if anything changesBestSmash Quote Link to comment Share on other sites More sharing options...
SLP Posted May 18, 2006 Author Report Share Posted May 18, 2006 No. I've connectet the unsused AINs to ground, and it seemed to work, but now it doesn't recieve any Signals from the pots. :'(Perhaps this can help you:AIN 1-6 FadersAIN 7-10 unused / GndAIN 11-16 Pots Quote Link to comment Share on other sites More sharing options...
SLP Posted May 29, 2006 Author Report Share Posted May 29, 2006 ...if I connect a certain AIN to gnd, the pots jitter less, but the Midi-out-led is still binking very fast.... Quote Link to comment Share on other sites More sharing options...
stryd_one Posted May 29, 2006 Report Share Posted May 29, 2006 If you ground all the pins except for one pot or fader, does it work OK? Quote Link to comment Share on other sites More sharing options...
audiocommander Posted May 30, 2006 Report Share Posted May 30, 2006 AIN 1-6 FadersAIN 7-10 unused / GndAIN 11-16 Potswhat about AIN 17-32 (or more precise 16-31) and the pins for the second AINX-module?Grounded these?If any bar of an unconnected pin is flickering, it is very likely to stray it's jitter to it's neighboured pins. Quote Link to comment Share on other sites More sharing options...
SLP Posted May 30, 2006 Author Report Share Posted May 30, 2006 I'm using a MBox plus. 2 multiplexers > 16 AINsI can't use more ains, but 16 are enough for me.If I pull the faders 4-6 down, I can use 1-3 without anything jittering...but I don't get any signal from the pots and the unused ains Quote Link to comment Share on other sites More sharing options...
SLP Posted May 30, 2006 Author Report Share Posted May 30, 2006 If you ground all the pins except for one pot or fader, does it work OK?I'm going to try this the next days.I wanted to try it today, but somehow the gnd-socket of the old, rusty power supply my neighbor gave me is not what it's supposed to be. I don't know exactly what it is, but it hurts ! ;D Quote Link to comment Share on other sites More sharing options...
SLP Posted June 5, 2006 Author Report Share Posted June 5, 2006 no. If I gnd everything but the 6 faders there's still some jittering.should I use shielded cables for the signal-wires? Quote Link to comment Share on other sites More sharing options...
audiocommander Posted June 5, 2006 Report Share Posted June 5, 2006 just try grounding ALL except ONE (just to see if that's the reason; no need to solder, just do it temporarily) -You already wrote that:If I pull all the Faders down, the Pots stop jittering.So it's likely the problem lies within the faders and / or neigboured AINs.What faders do you use? 10k linear? Have you measured the wiring with a Multimeter (Ohm Resistance should grow and shrink when the fader is moved, when you connect the multimeter to the AIN-pin and AIN-GND.regards,Michael Quote Link to comment Share on other sites More sharing options...
SLP Posted June 7, 2006 Author Report Share Posted June 7, 2006 I'm going to try this, when I've repaired my "killa-work-bench"http://www.midibox.org/forum/index.php?topic=6898.0 Quote Link to comment Share on other sites More sharing options...
audiocommander Posted June 7, 2006 Report Share Posted June 7, 2006 :o woa, mantake care, you ;) Quote Link to comment Share on other sites More sharing options...
SLP Posted July 16, 2006 Author Report Share Posted July 16, 2006 Ok. I've grounded every input except from one.now every input is jittering around 31.the input which is connected to a fader doesnt work either.:-\ Quote Link to comment Share on other sites More sharing options...
audiocommander Posted July 16, 2006 Report Share Posted July 16, 2006 This is a typical reaction of ungrounded AIN-pins. If you leave let's say all 8 inputs ungrounded and put a signal on one of them, all eight show an input signal.You have to check again all your connections, there has to be a soldering error or wiring fault somewhere!Can you check your connections with a Multimeter? I bet the pins are not grounded and there's a signal coming in on one of them... Quote Link to comment Share on other sites More sharing options...
SLP Posted July 19, 2006 Author Report Share Posted July 19, 2006 I think I'll remove all wires and replace them by longer ones so It's all a bit more tidied up Quote Link to comment Share on other sites More sharing options...
SLP Posted July 31, 2006 Author Report Share Posted July 31, 2006 oh, I love such kind of problems.I've replaced the wires by longer ones to get a better overview and replaces the SIL-headers by sockets and soldered the plugs to the cable-ends to be able to change the AIN-connections without soldering....and it works!don't know how i've managed to make it work, but it works.thank you all for your support anyway.Now i'll finish my "beer-controller" and if everything works I'll be the happiest man in the world. Quote Link to comment Share on other sites More sharing options...
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