goyousalukis

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Everything posted by goyousalukis

  1. Bi-Polar Question

    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. Time to do some more research. Thanks for your comments! Edit: This would also solve my problem of what to do if the midibox sent voltages to high. I am worried if I accidentally send more than 4.5v to the Moog.   
  2. Bi-Polar Question

    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 scale it up, will I get fairly accurate notes, or will it be really out of tune? I suppose another option would be to use an Arduino Nano to make a note table and convert regular CV to the right voltages. Just curious if you guys have any ideas. Thanks! 
  3. midiphy gates/clocks module

    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!
  4. Bi-Polar Question

    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.
  5. midiphy gates/clocks module

    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.
  6. midiphy gates/clocks module

    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!  
  7. AOUT NG Troubleshooting

    Thanks guys - I havent had a chance to pull the OpAmp and recheck the voltages yet. I'll probably just settle for 6 CV outs.
  8. AOUT NG Troubleshooting

    Hey guys, I am looking for some help. I have a MBSeq4 with an AOUT NG connected with the line driver/receiver. 6 of the channels are working perfectly, but I have two issues: When I test the calibration for each channel with the output set at 8V, I get a constant 11V at output 5, and 0V at output 7.  I have checked continuity between the outputs and the opamp, along with verified the resistance. I have also verified continuity between the opamp and the DAC. When I measure the voltages on the DAC pins for a working channel, I get 3V. When I check output 5, it has 4v, and output 7 has 0V. Do you guys think I fried these two pins on the DAC?
  9. Need a pre-programmed PIC18F452

    Chips are in the mail...
  10. Need a pre-programmed PIC18F452

    I'll go through my stash of PICs and see if I have any 452's lying around.
  11. Need a pre-programmed PIC18F452

    I'm in El Paso, TX - I can do it for you.
  12. AOUT - Line Driver Questions

    Not Sure why the double posts.... Wish I could delete it. I figured it out.
  13. AOUT - Line Driver Questions

    Hey guys - a few quick questions. I finally soldered up the two line driver boards. MBSeq 4 using the WILBA front panel. Question 1 - do I use straight through cables for the connections from the Line Driver to the core and to the Front Panel?  Question 2 - do I still use the modified cable to the AOUT from the line driver? Question 3 - Does the MBSeq still function if the other end of the line driver is not connected? In other words, If I connect the two ribbon cables to the core and front panel, but do not hook up the 25 conductor cable, should the MBSeq work fine? Right now, as soon as I connect the line driver to the front panel, my front panel goes wonky, and the buttons do not work correctly. I have of course gone over the transmitter board and double checked that I made no mistakes. Thanks, Justin  
  14. AOUT_NG Eurorack format

    I'm doing something similar, but I built a Eurorack case that has space between the two rows. I am going to mount a panel there with all the jacks, and mount the line driver receiver to the side of the case.
  15. AOUT - Line Driver Questions

    Disregard - I went back to the uCapps page and see all the answers to my questions. I did not have the jumper stuffed. 
  16. AOUT - Line Driver Questions

    Hey guys - a few quick questions. I finally soldered up the two line driver boards. MBSeq 4 using the WILBA front panel. Question 1 - do I use straight through cables for the connections from the Line Driver to the core and to the Front Panel?  Question 2 - do I still use the modified cable to the AOUT from the line driver? Question 3 - Does the MBSeq still function if the other end of the line driver is not connected? In other words, If I connect the two ribbon cables to the core and front panel, but do not hook up the 25 conductor cable, should the MBSeq work fine? Right now, as soon as I connect the line driver to the front panel, my front panel goes wonky, and the buttons do not work correctly. I have of course gone over the transmitter board and double checked that I made no mistakes. Thanks, Justin  
  17. Using with a USB Powered Keyboard

    Quick question: It is my understanding that I can plug a USB keyboard directly into the SEQ to control transposition, Arp, CV outs, etc...  Since the USB keyboard is powered by USB, I would assume that I need to bridge Pin PA9 to 5V in order to give the USB Keyboard power via the micro USB. Is this correct? I am using my own MeanWell 5V power to power the SEQ. Is there any issue if I bridge the pin and then connect the seq to a PC via USB? I am worried that I could fry something if I use my own power supply and then plug the micro usb port into my PC. Thanks, Justin
  18. MANIPULATÖR 002 - THE OPEN MINDED MIDIBOX NG

    Beautiful looking machine!
  19. new to midibox, sourcing parts from mouser help

    Yes, I have three 6581's in my 6582!
  20. Pre-programmed PIC18F4685

    Hi Frank, I know this is late, but if you need someone to burn your PICs, I am able to. I am in the US though.
  21. Help troubelshooting button matrix please

    FC, I seem to remember having a few issues like this on mine. Double check all the solder points on the IC's along the bottom of the main board. Justin
  22. n00b question before etching

    If you do end up going the MBSid route, I have a couple of empty SID boards and empty core boards sitting around after I upgraded to a MB6582. I'll let them go cheap.
  23. new to midibox, sourcing parts from mouser help

    Hi Rob, Welcome. First question: are you building the MidiBox SID from scratch, or are you building the MB6582 variant? I personally recommend building the MB6582. You can purchase the main board PCB and control PCB from modularaddict.com, and it makes everything very easy. If you look at http://www.midibox.org/dokuwiki/doku.php?id=wilba_mb_6582_parts_list, you can get the list of parts. A while back, I edited a bunch of the wiki pages to add Mouser numbers, but I don't have access to the Wilba pages. I can probably pull up my Mouser order from a year ago and post that if you would like. Justin
  24. MIDIbox SEQ V4 Release + Feedback

    Hi,  Hopefully someone will chime in if I am wrong, but I don't think there is a way to send different notes to different channels within a single track. A couple of possible ideas would be a MidiBox NG (another STM core with MidiIO) that takes the drum track input, processes it, and then sends out different channels, or some kind of software solution that does it on your PC. (Or another MBSeq dedicated just to the Digikat! :)
  25. Sammich kits on eBay -- legit or bootleg?

    Yeah, or somehow got a hold of the board files and just made them as-is?