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goyousalukis last won the day on November 30 2018

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About goyousalukis

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    MIDIbox Tweaker
  • Birthday 10/20/1973

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    El Paso, TX, USA

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  1. I might have two left over, I'll look tonight - but I'm in the US. Here are the links to Mouser and Digikey... https://www.digikey.com/product-detail/en/c-k/PE-BK/401-1152-ND/417703 https://www.mouser.com/ProductDetail/CK-Components/PE-BK/?qs=sGAEpiMZZMsqIr59i2oRctAaD8wfjvPOMa0ZOJ%252b2auk%3D
  2. Ok, as usual, I was able to answer some of my questions. I see that there is a 3rd MIDI In/Out option for the Seq. And I assume I would use MidiBox NG. How do I make them talk together?
  3. Hey guys, I have a spare core board, and I would like to add 16 10k faders to my MBSeq Ver 4+ to control the note steps using an AIN board. What software would I load on the core, and what are my options for connecting it to my MBSeq core? Is there a way to do it through ethernet, so I don't lose a midi in on the Seq? Thanks, Justin
  4. Hi - did you try setting a bookmark? Check out the bookmark page at the end of the user manual: http://ucapps.de/midibox_seq_manual_m.html I haven't used this feature, but I believe you can assign a bookmark to a GP button. The bookmark includes the current page. I'll try it tonight.
  5. Ah, yes, I see that J2 is the External Filter jack. So if nothing is connected to that jack, the accessory jack can be used to control the filter. I'll have to see if pin 6 is connected to anything. To me, it seems strange for Moog to provide a CV input with out some sort of gate. On my synth, the jack is actually covered by a plate with rivets, so I guess they decided to not pursue any accessories. Thanks for listing your math and deductions. I will try to understand it. In your last comment, which CV entry point are you referring to? The J1 pin 4? I am not triggering there. I
  6. Thanks - I posted on MuffWiggler, and the fine gentleman suggested calculating the appropriate resistor value, but I didn't know how to do it. I will try your suggestions today, as soon as I get home! I also searched for what the last two accessory jack points connect to, but I also couldn't find it. I will try to track them down. Then I could just make an outboard adapter without modifying anything on the original synth. Thanks
  7. Hi Zam, I have gone through the calibration procedure to some extent. The center key is at 0V. I'm sure someone more competent than me could get it done with opamps. I tried an opamp with a 1K and 2K resistor, which if I got the math correct will amplify the voltage by a factor of 3. So If I send a C# at .083v (1/12) from the midibox, it would amplify it to .25v, which is what the moog expects. When I did this, I did not get an in-tune scale. I then swapped the 2K resistor with a 10K pot, and trimmed it until I was getting perfect octaves from the Midibox. But then the scale between the
  8. Here's a quick video of my first test...
  9. Thanks Zam, the table would be easy to modify, but then all 8 outputs would be modified. I only need one bipolar for the Moog. The rest of my eurorack is all 1 v/o. I did try the opamp to increase the voltage by 3, but I couldn't get a scale in tune. Last night I hooked up an Arduino with a 12bit DAC, and got pretty good results. Now I need to add the Midi part.
  10. I did some work tonight, and was successful with using an opamp to scale the voltage from -4.5 to 4.5. I was able to get an octave in tune using a potentiometer, but of course a scale did not play correctly. When you say software, do you mean modifying the midibox code? I hadn't thought of that. I don't know if my coding skills are up to that. Now that I am brainstorming, perhaps it would just be easier to use MIDI instead. There are lots of examples of Midi to CV for arduinos. I would just have to customize the output voltages to match the voltages that I measure at each key. T
  11. Thanks guys, I'll give that a shot. I unhooked the transistor a while back, trying different solutions, so I don't have a photo. It is for a Eurorack, so it is actually 12V, not 15. I was just using the schematic as a starting point. I was using the 220 ohm resistor. Sorry for hijacking the thread!
  12. Thanks, but I don't think that would fix the issue. Even if I got the 10Vpp, it would still be at 1 v/o right? I actually need 3 v/o, since each semitone is .25v apart.
  13. I was using the top right corner of this schematic from the YuSynth gate delay, except connecting the base of the transistor to the DOUT module.
  14. That looks great! I took another route, and built a breakout panel in-between two rows of 3U in my case. I do have a quick question: In your circuit, do the lights blink even if nothing is plugged into the jack? (looking at the picture, it looks like it does). On mine, I have an LED installed, and I've gotten it to blink when it is driving something, but it doesn't blink with nothing connected. I tried a simple BC547 circuit, but no luck. If yours does, I would love to see the schematic!
  15. Hey guys, I am adding CV in and gate in to an old Moog MinitMoog. I have the gate sorted out nicely, and have moved on to the CV part. I changed one of my AOUT_NG channels to Bi-polar, and I see on the AOUT_NG uCapps page that the range is -2.76 to +2.75. The issue I have is that the 37 keybed for the MinitMoog uses a voltage spread of 9V. The lowest note is -4.5v and the highest is 4.5v. So the difference between two notes is approximately 1/4v versus the 1/12v of a 1v/o typical CV. What strategy would you take to scale the 5.5v spread to a 9V spread? If I use an opAmp to sca
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