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rbv2

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Posts posted by rbv2

  1. Midibox v4+ for Sale / Saxony-Germany

    in Fleamarket

    Posted

    Hello all

    Selling my midibox sequencer including breakout box. The sequencer is fully functional, from a non-smoking household. Has never been used for live performances, only studio use.

    The breakout box is a bit obvious DIY but fully functional. You need a free slot in the modular system for the +-12V power supply.

    Selling price 1350,-€.

    best regards
    rbv2

    https://www.ebay-kleinanzeigen.de/s-anzeige/midiphy-sequencer-v4-midibox-stepsequencer/2241157248-74-4257

    • Like 1

  6. midiphy SEQ v4+

    in MIDIbox SEQ

    Posted · Edited by rbv2

    1 hour ago, latigid on said:

    Can we see? Would be the first SEQ with them!

    What tools did you use? A wire puller? 

     

    i pulled them by hand. is there a special tool?

    the picture does not match the actual impression. one can clearly distinguish which steps are selected.

    IMG_20200402_233818.jpg

    • Like 3

  10. midiphy SEQ v4+

    in MIDIbox SEQ

    Posted

    24 minutes ago, Hawkeye said:

    @slo great build, congrats! :cheers:

    Regarding key cap alternatives to the clear ones on the standard builds, we might have something cooking in the lab, that could be introduced soon :).

    :D yesss, can't wait.  after a while of usage i find it a little bright too.

    • Like 2

  11. midiphy SEQ v4+

    in MIDIbox SEQ

    Posted

    On 12.3.2020 at 9:17 PM, slo said:

     

     

    Another successful build. Thanks to all involved for such a great design and realization of this sequencer. I followed the build videos and that kept me on track. The only problem I had was of my own doing, mixing up the resistor networks then getting erratic output on the first seq_l test. Hot air and swapping the resistor networks around fixed this. Thanks to @Antichambre  for those great looking keycaps too. Looking forward to more great things from the Midibox team.

    Edit: I did have the odd inversion of colors on the beat LED, I had red on measure green on beat, a change of values in the config file HWCFG fixed that.

    SeqV4_Plus.jpg

    i like the keycaps a lot :D

  12. SEQ V4+ & Breakout Box - double trigger

    in Testing/Troubleshooting

    Posted

    2 hours ago, latigid on said:

    I'm not 100% sure what you mean with very long lengths. Does it remain when the gate length is set to glide? Video?

    when sending out triggers from AOUT Ch16 and then select in the parameter layer "lenght" i can change the lenght of the trigger/gate from 1% to Glide

    at 1% - no trigger

    at 2% - sporadic trigger

    from - 3-20% steady trigger

    from - 21-100 % double trigger with increasing distance (21% narrow / 100% wide)

    glide - only the first trigger

    before we fixed the grounding issue i got double triggers starting at 5% and other problems but now i'm pretty shure those are gates and not triggers making some modules being triggered at the beginning and the end of that rectangular pulse.

     

  14. SEQ V4+ & Breakout Box - double trigger

    in Testing/Troubleshooting

    Posted

    5 minutes ago, latigid on said:

    Is the external PSU actually +5/-5V? So a 10V supply?

    no, its 5V didn't know how write it correctly. :blush:

     

    8 minutes ago, latigid on said:

    The 0V should be common rather than 0V to -12V. I think that's what your diagram shows, but the 0V of the PSU should connect to the yellowish wire on your diagram, not the black -12V

    yes, isn't so well drawn but that's what I meant.

     

    thanks. i try it and report

  16. SEQ V4+ & Breakout Box - double trigger

    in Testing/Troubleshooting

    Posted · Edited by rbv2

    hi latigid on,

    thanks a lot for your answer.

     

    - since i have made no changes in the HW Config beside setting the 1ms-option and SRs for clocks, gates & Trigger i would assume no

    - all tracks muted except for the one sending triggers to CH16

    - checked all cables visually again

    - the resistance between 0V Eurorack and pin 2 of a Midi Socket oscillates between 1,8-2,5 Ohm

    - no jumper in J3

    - the double trigger only occours on some modules and depends on the setting of the length in the parameter layer, when length is 4% it's almost gone, it's acting like a gate..

    - I'll try to do the tests in mios when I understand how it works 

    7 hours ago, latigid on said:

    If you use an external PSU you must connect the 0V together with the +/-12V PSU 0V common line. A metal panel is not a good (and some would say unsafe) method of achieving common 0V.

    so the connection underneath the DAC is not sufficient then?

    7 hours ago, latigid on said:

    I guess you are not using the +5V on the bussboard? But if you are, maybe you don't have +5V connected and the modules are being parasitically powered from the digital signals? (This is not good for CMOS btw.) Did you measure correct +5V on the modules?

    yes, i am using an external power plug. i get 4,96V on J2 of AOUT NG and 4,96V on J19 of the Receiver

    unfortunately I still have to wait for the scope..

     

    thanks

    rbv2

     

  18. SEQ V4+ & Breakout Box - double trigger

    in Testing/Troubleshooting

    Posted

    hi peter,

    thanks a lot for you answer.

    8 hours ago, Hawkeye said:

    Hola,

    just tested the new dedicated midiphy eurorack modules, that are in the works - while i don't have a big modular setup, i measured and tested gate and trigger outs and had no issues (tested triggering the "Freeze" and the "Trig" functions on a MI Clouds and also measured signal outputs with a scope). Therefore, I would also expect maybe a common ground problem on your side? Have you grounded the external PSU and the LineDriver Receiver to the modular/rack common ground?

    at the moment i have wired 12V+/- and GND directly from a doepfer bus board to J3 of the AOUT NG the external psu is in the middle of the cable from JAOUT of the receiver to J1 of the AOUT NG. (Vs & Vd) . by common ground do you mean i should connect the Vs line of 5V PSU to the GND of J3 at the AOUT NG? all the jacks (gate, trigger, cv) are connected to ground and since the panel is made of aluminium the gnd of both psu's is connected.

     

    8 hours ago, Hawkeye said:

    The new euroceiver module (left in the pic below, which still uses handmade paper/epoxy panels for fit-testing) has a built-in voltage regulator, that allows generating the required 5v from the +12V modular rail, which will spare you the external psu and would not require you to send the +5v down the DB25 cable from the SEQ, which might be problematic.

    unfortunately i saw the information about the new modules too late. i would rather use them but i had already bought all the parts and ordered a panel at schaeffer..:doubt:

    i have also learned that the 5v on the doepfer boards are not there at all although it is written on it :rolleyes:

     

    thanks!

  20. SEQ V4+ & Breakout Box - double trigger

    in Testing/Troubleshooting

    Posted · Edited by rbv2

    hi all,

    after testing i found an minor issue with my breakout-box. everything is working as intended but i get annoying double triggers on some modules. when i connect the same modules to my robokop sequencer or other trigger source everything is fine. could it be a grounding issue?

    the +/-12V for the AOUT NG is coming from my eurorack and the +5V for AOUT NG and the LineDriver Receiver from an additional psu. the external psu (5v) is in the middle of the ribbon cable between AOUT NG and the receiver as suggested by latigid on. i also enabled the 1ms trigger but it makes no difference.

    when using the same trigger on another module it works so i guess i can rule out the double trigger is coming from the sequencer itself.

    please help

    rbv2

  21. Troubleshooting midiphy SEQ v4+

    in MIDIbox SEQ

    Posted

    hi all,

    after testing i found an minor issue with my breakout-box. everything is working as intended but i get annoying double triggers on some modules. when i connect the same modules to my robokop sequencer or other trigger source everything is fine. could it be a grounding issue?

    the +/-12V for the AOUT NG is coming from my eurorack and the +5V for AOUT NG and the LineDriver Receiver from an additional psu. the external psu (5v) is in the middle of the ribbon cable between AOUT NG and the receiver as suggested by latigid on. i also enabled the 1ms trigger but it makes no difference.

    please help

    rbv2

  25. Troubleshooting midiphy SEQ v4+

    in MIDIbox SEQ

    Posted · Edited by rbv2

    hello all,

    could anyone please help me with the breakout box for my seqv4+?

    after first testing the AOUT NG is working fine but i don't get any gates/clocks/triggers from the DOUT. in the hwcfg i have enabled SR 3 for gates, 4 for clock signals, and 5-6 for drum triggers also the setting for the 1ms pulses is enabled.

    when shift register nr4 is enabled all the leds on the left LEMEC board lighting up :pout: so i'm guesing it's maybe the wrong shift register.

    thanks

     

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