Guest jeremie Posted April 8, 2004 Report Share Posted April 8, 2004 hi alli just saw your site http://www.ucapps.de/, and this give me the idea to create a motorised automation for my analog console (a tac matchless). A system like this his VERY VERY expensive to buy.My console would have 24 motorised fader.I think everything is done on your site to complete a project like this, my idea was to use the automation of a sequencer like cubase to control by midi the motorised fader on my console.What do you think of this project, if it's possible to do it and not to complex? I am also evaluating the costs, so do you know the price of a motorised fader? (the motorised fader has to have a audio signal passing through it with a good quality)I think a alps K motorised fader would be the good choice.thanks Quote Link to comment Share on other sites More sharing options...
arumblack Posted April 8, 2004 Report Share Posted April 8, 2004 mouser has motorfaders for about 50 us. not sure if they are suitable for your application. they are alps.definitely a good project, the idea has been presented here before, but if any one has done it, they didn't tell us... Quote Link to comment Share on other sites More sharing options...
Guest jeremie Posted April 9, 2004 Report Share Posted April 9, 2004 in fact the only thing that holds me to make this project is to find a good motorised fader which is not expensive (max 40$).I just saw the mouser site, they don't have the right motorised fader, the one i am searching must have two track (the servo track and the audio track), the fader that you use in your midibox only have a servo track because you don't need to pass a audio signal through it.Tell me if you know place where they sell motorised fadersThanks Quote Link to comment Share on other sites More sharing options...
arumblack Posted April 9, 2004 Report Share Posted April 9, 2004 yes of course you need the two tracks, I just couldn't remember if the mouser one was like that or not.Sorry i do not know where to get such a fader....but they do exist. Quote Link to comment Share on other sites More sharing options...
Guest jeremie Posted April 9, 2004 Report Share Posted April 9, 2004 i justy found this site http://www.song-huei.com.tw/product.php?mode=list&cid=59they sell motorised fader, but i don't their price, they could be cheaper than alps or p&g Quote Link to comment Share on other sites More sharing options...
Synapsys Posted April 10, 2004 Report Share Posted April 10, 2004 I contacted the US rep for Song Huei and found out the MVA02-1101 series motor faders cost 46.50 USD each FOB Taiwan. The catch is the minumum quantity is 1000 units!! :( Quote Link to comment Share on other sites More sharing options...
Guest jeremie Posted April 10, 2004 Report Share Posted April 10, 2004 did you see this fader? http://www.tkd-corp.com/02_products/pdf/p03_mcu-820.pdfit has a controller on it!! it is possible to use this one with the MIOS or not? Quote Link to comment Share on other sites More sharing options...
hallucinogen Posted April 10, 2004 Report Share Posted April 10, 2004 or you could use the normal 1 track faders with a midibox.and control a vca for the volume control with the voltage ouput of the fader - i think i saw something like that around here ! Quote Link to comment Share on other sites More sharing options...
Steven_C Posted April 10, 2004 Report Share Posted April 10, 2004 other brands of MF's that I know of are 'outboard electronics' (though not technically a mf, as it uses a solenoid-like coil to move the fader instead of a motor) and dambrin. (I think it is spelt dambrin, but not sure.)one thing to watch out for is noise from motors getting into your audio tracks....Steve Quote Link to comment Share on other sites More sharing options...
Guest jeremie Posted April 10, 2004 Report Share Posted April 10, 2004 the problem of the vca is that it impact the quality of the sound, the best is to not have any vca in your signal path Quote Link to comment Share on other sites More sharing options...
hallucinogen Posted April 11, 2004 Report Share Posted April 11, 2004 thats right ! :-Xjust thought it would be cheaper than 2 track motorfaders at ~50 $ ;)seems that u have to spend some money for quality faders... Quote Link to comment Share on other sites More sharing options...
Guest jeremie Posted April 11, 2004 Report Share Posted April 11, 2004 yes i know, but my prob is to find a fader that fits in my console, i found only 3 (the length of the fader must be < 137mm):MF-660 at www.aacix.comPGFM3000 at penny & gilesMCU820 at www.tkd-corp.comI think the price of the penny & giles is to much for me, so i hope that the MF-660 is in my price range but i don't know where i can buy it.... Quote Link to comment Share on other sites More sharing options...
Guest JimCook Posted April 11, 2004 Report Share Posted April 11, 2004 It would take some code banging and little hardware, but why not use MIOS to control serial audio mixing chips? That way the signal wouldn't run through the slide pot at all! The $7 Panasonic at All Electronics could be used. For example http://www.analog.com/UploadedFiles/Data_Sheets/309523086317523187ssm2163.pdf describes an eight input, two ouput mixer chip needing only three or four "wires" to control the chip. Or, look at this chip http://icpart.com/sheetfiles/T/ST%20MTDA7465.pdf Just do a google on: digital audio mixer chipsTK has developed the skeleton of something more that simply a MIDI controller. After all, the basics of MIOS are to examine the various states of operator controls and create hex serial messages. If someone can write the code and create the hardware to output I2C or similar serial commands, then expanding MIOS to a wide range of audio controls would be relatively easy. Quote Link to comment Share on other sites More sharing options...
Guest jeremie Posted April 11, 2004 Report Share Posted April 11, 2004 the prob is also that i need a good quality motor fader, because it's for a professionnal mixer, so a cheap panasonic fader would not be a good choice. Quote Link to comment Share on other sites More sharing options...
moebius Posted April 12, 2004 Report Share Posted April 12, 2004 JimPilo has already modified AOUT driver to work with PGA2311 volume control chip. Check: http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=mios;action=display;num=1074625363;start=0#0Bye, Moebius Quote Link to comment Share on other sites More sharing options...
Jack Posted April 12, 2004 Report Share Posted April 12, 2004 Please look at the Elektor magazine. There is a pre-amplifier with a PIC18LF452 (L = PLCC version) and PGA 2311.Maybe its useful.wfgJack Quote Link to comment Share on other sites More sharing options...
pilo Posted April 12, 2004 Report Share Posted April 12, 2004 yes! I saw this article and tey said that the pga2311 sound really good. I use the pga4311 and they seems to be good (but I didn't make a lot of test until now), it's quite easy to use it with mios.Maybe a cheaper solution. But it has "only" 95db, I mean the you can change the gain betwee +31.5 and -60db or something like that (and mute of course). Quote Link to comment Share on other sites More sharing options...
Jack Posted April 12, 2004 Report Share Posted April 12, 2004 PGA2311 and PGA4311Dynamic Range(dB): 120Gain and Attenuation(dB): +31.5dB to -95.5dB with 0.5dB)Here is the Link:http://focus.ti.com/docs/prod/folders/print/pga2311.htmlhttp://focus.ti.com/docs/prod/folders/print/pga4311.html Quote Link to comment Share on other sites More sharing options...
pilo Posted April 12, 2004 Report Share Posted April 12, 2004 lol you're right, it's 120dB :) sorry... I just woke up when I wrote this post! Quote Link to comment Share on other sites More sharing options...
Guest psytron Posted April 13, 2004 Report Share Posted April 13, 2004 hey pilo can you give me some info on how you are using the pga4311. i am vey interested in this.things i would like to know are.does this control line level audio? (i think so)what hardware (circut) do you interface it to the core?i hope you would be keen to put this on the midibox org server. Quote Link to comment Share on other sites More sharing options...
pilo Posted April 13, 2004 Report Share Posted April 13, 2004 oh sure I can give the eagle file for the pcb, and the code to se inot MIOS.Actually those pga (I use the 4311, 4 channels, but you can chain them to control more channels ;)) are very easy to use! only a SPI (4 wire) interface with the core module.And yes you can line level ;)here's the linkhttp://avishowtech.com/midibox/photos/pga.schhttp://avishowtech.com/midibox/photos/pga.brd Quote Link to comment Share on other sites More sharing options...
Guest psytron Posted April 15, 2004 Report Share Posted April 15, 2004 those two file links you gave me i understand the .brd is for eagle but it came up with "illeagle data"(hope i dont get arrested hehe) perhaps i need a new version of eagle. what prog uses the other file format??thanks dudeedit - I now have the most recent version of eagle 4.11but still the same problem. Quote Link to comment Share on other sites More sharing options...
smashtv Posted April 15, 2004 Report Share Posted April 15, 2004 Looks like only the shortcuts or aliases made it to the server, not the actual files.....Pilo if you send those to me I'll put them up. ;)Have fun!SmashTV Quote Link to comment Share on other sites More sharing options...
smashtv Posted April 15, 2004 Report Share Posted April 15, 2004 Hey all!The PGA files are up and ready for download.Have Fun!SmashTV Quote Link to comment Share on other sites More sharing options...
pilo Posted April 15, 2004 Report Share Posted April 15, 2004 than you Smash!! ;) Quote Link to comment Share on other sites More sharing options...
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