koerschgen

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Everything posted by koerschgen

  1. Upcoming MBHP_MF_NG module

    Hi everybody, I would like to know if it is possible to put a circuit like this between the bhp_mf_module and the Motorfader? My motors create a very loud Pam-noise, doesn't matter wich setting I use... I think this will go away with a DC-Voltage-control...?! (Like SSL Motorfader) Thanks!
  2. Upcoming MBHP_MF_NG module

    Hi Zam, that is great news and great work! Would be very nice to see some pics :-) Yes, its a Neumann with Danner Kassettes.  There is a few places where I can put some extra PCBs in, depends on the max cable length. Sounds like you also implemented some auto-buttons and status-leds... Is it still connected via HUI? Is there any plan to sell those pcbs? Best, K
  3. Upcoming MBHP_MF_NG module

    Hi ZAM! How far are you with your variable Voltage driver? I am very interested in that solution, because I have the same problems regarding noise. Have an old neumann mixing desk that needs quiet, flying faders :-) What about the MC33030 ? Could that be an replacement for the L293D ? Thanks, Koerschgen
  4. Upcoming MBHP_MF_NG module

    Nice! What kind of desk is that? Cheers, K.
  5. Upcoming MBHP_MF_NG module

    Really nice picture, GiPitt! Are the red Faders only control Fader for you Daw, or do they hava a Audio Taper? What kind of Mixing Desk is this? Cheers, K.
  6. Upcoming MBHP_MF_NG module

    btw, I will run the Fader Modules with Mackie Hui. Will it cause problems with HUI if I deactivate 4 of the Faders, because I only need 20 in my Setup? Answered the above question by myself... it works. small update: Today The Fader-board arrived, everything works fine from the first startup! Tested it with the old original Fader, works in general, but it took me the whole day to figure out a good setting. 12v was way to strong, even though the motor is rated that high. I ended up using 6v... (as you said, Thorsten) Its not that fast anymore, but it turned out that noise is a big problem... the best setting so far is MinDuty 15, MaxDuty 100 PWM Steps are at 30. Btw, couldt figure out how to load a saved "preset"... All of the saved Sys.ex Files were grayed out!? Am I missing something? Now I need to build the first Prototyp fader were the slider sits much tighter on the rail and can be adjusted, this will eleminate a bit more of the noise (wich comes 50/50 from the motor and from the Slider). Any Ideas how to lower the Noise a little bit more...? What can I change with "MF Deadband"? I experienced no differene when I changed it to other values... Thorsten, are you interested in testing a Fader? Maybe You find out something else to control these beasts... Thanks!
  7. Upcoming MBHP_MF_NG module

    1000% And no free play, no rattlesnake inside, no noise (ok, a little bit...) The side panels are damped with felt.
  8. Upcoming MBHP_MF_NG module

    Prototype of the new Motorfader
  9. Upcoming MBHP_MF_NG module

    Oh, good, that saves me a lot of Money, because I will need about 15A for three Boards (for the unexpected worst case that all Faders are forced to stop...) The Motor I use is rated with 12v, but it seems to be that the engineers who designed the Fader back in the days gave them 15V... (see attachment) I think this PTC will bring a nice protection in combination with a sloblo Fuse for each Board: http://www.conrad.de/ce/de/product/551228/Bourns-Multifuse-Serie-MF-R-Abmessungen-74-mm-Abmessungen-74-mm-IH-03-A/SHOP_AREA_17392&promotionareaSearchDetail=005 Is there any need for Motor Suppression Capacitors? Thanks K
  10. Upcoming MBHP_MF_NG module

    The reason why I have to use this Motor is, because I have an old desk which has big faders (130mm), so I need to build my own custom Faders. and I had the chance to get 30 old motorised faders with the mentioned coreless Motor (but without a Audio Taper). Its the oldschool Version with a big wheel mounted on a 10k Pot and driven with a nylon string. So I need to use this Motor (to keep the costs Low). If the Speed of the fader movement is to high, I could change the ratio of the "gear". (the Motor rotates 4 1/2 Turns if the fader is moved from bottom to top). In the Old Fader the Motor driver was the L293D to, so this Problem is solved. I saw in the original schematics that the Motor Supply was 15v, maybe to lower the current a Little Bit. Is it a Problem to use a switching Psu for the Motor Supply? Will this may cause Problems with the PWM Control? @TK: 15V isn´t that high I think... Do you mean high current instead? Thanks so far...! Koerschgen
  11. Upcoming MBHP_MF_NG module

    Hi Thorsten, thanks for Your reply! Thats all good news! But to make some things more clear to me, do you mean Corless Motors in general or specially the Motor I mentioned? I measured the stall current consumption of the Motor, it was about 650ma, so the L293D will probably do the job. I will supply all the Power externally and connect it directly to the Pins of the L293D at the bottom Layer. Or can the PCB handle more than 5A in the worst case? attached is the datasheet of the motor. Its the 1724L012S (12V) The Motors-off-switch needs to be discussed later, as I need to build 24 Faders first... Is it true that the Voltage will drop a little bit if a PWM is used for Motor control? So is it a good or bad Idea to raise the Voltage for the Motor up to (lets say) 13V? Thanks! Koerschgen FH1724S.pdf
  12. Upcoming MBHP_MF_NG module

    Hi, after a few weeks searching for a solution to get my Analog Desk automated, I found this forum! Great! Many thanks to all of You who get this thing running, specially TK! A few questions: @tk: As you mentioned in Post #1 "Two snapshots of the prototype - currently I've only tested the circuit with high-quality K Faders, which were not properly controllable with MBHP_MF_V1" - Is this "fixed" now? Can I use coreless DC Motors (especially FAULHABER Motors) and have a proper Control? - Can I use the SN754410 instead of the L293D (it can handle 1A compared to 600ma) without any problems? - Is it possible to leave out all the PSU components if I supply the two different Voltages externally? - Do I really need a core module if I want to run more than I Fader-Module (I need 4)? Or can I connect each Module to a independant MIDI Out (Each PIC will have a unique ID. Its connectetd via HUI to ProTools)? Edit: I Need an analog switch for "Motors Off", Can I simply Switch of the two wires to the Motors via relay? Or will this cause some errors in any Way? Is there a better Way to do it (Not in Software)? Many, many Thanks!!! Best, koerschgen