TK. Posted November 2, 2014 Report Share Posted November 2, 2014 Hi, since the old posting got lost, I will write a new one and give you some updates. I've overworked the 25-pin breakout port for MBSEQ (and MBCV V2) to allow interconnections between an AOUT(_NG) module and MIDIbox over long cables (at least 2m will be possible). In addition, the previously direct J5/J28 outputs for gates and DIN clock have been replaced by a DOUT connection, which means that level-shifting is now done via 74HC595 SRs, and more than 10 outputs are available (e.g. I'm planning to provide multiple Clock and Start/Stop outputs, but also the 64 drum trigger outputs can now be made available in a breakout box). Picture of the prototype: Schematic of the transmitter part: http://www.ucapps.de/mbhp/mbhp_line_driver_transmitter.pdf Schematic of the receiver part: http://www.ucapps.de/mbhp/mbhp_line_driver_receiver.pdf Update: today I created the layouts and ordered at OSH park. Boards should be available for testing in ca. 3..4 weeks Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
yogi Posted November 3, 2014 Report Share Posted November 3, 2014 Very Cool. The max 2M length is excellent, putting the DAC close to the analog gear and keeping the digital UI in the 'work space'. Thank You Yogi Quote Link to comment Share on other sites More sharing options...
jab Posted November 3, 2014 Report Share Posted November 3, 2014 Very cool! Are there plans to adapt this for MB_NG? I'm interested in building an external pedal board that will have some additional DIN/DOUT inside. Or is there a simpler way to do this if all I'm looking for is extending the SRIO? Quote Link to comment Share on other sites More sharing options...
Alasdair Moon Posted November 3, 2014 Report Share Posted November 3, 2014 Well done :sorcerer: Quote Link to comment Share on other sites More sharing options...
TK. Posted November 3, 2014 Author Report Share Posted November 3, 2014 Are there plans to adapt this for MB_NG? I'm interested in building an external pedal board that will have some additional DIN/DOUT inside. It will work with any MIDIbox, which means: also with MIDIbox NG. It's the right approach for an external pedal board - but let me prove the robustness first before I can confirm that it will really help. Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
k-rAd MB6401 Posted November 14, 2014 Report Share Posted November 14, 2014 This is fantastc Thorsten! More analog outs from the seqv4! Quote Link to comment Share on other sites More sharing options...
TK. Posted December 1, 2014 Author Report Share Posted December 1, 2014 Good news on this topic: I got the PCBs and they are working! E.g. here I connected a TPD to the line drivers, a bidirectional SRIO is working over a long cable without flickering LEDs or unstable encoder/button scans: And I tried an AOUT_NG module which works as well: I'm surprised by myself that it works w/o issues, because I haven't found so many references to these wonderful chips in the DIY world :) Therefore I'm crossing fingers that I haven't overlooked something ;-) However, I will do some additional checks this weekend and release the .brd files if I don't notice issues. Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
Alasdair Moon Posted December 1, 2014 Report Share Posted December 1, 2014 TAKE MY MONEY :D Quote Link to comment Share on other sites More sharing options...
TK. Posted December 8, 2014 Author Report Share Posted December 8, 2014 The modules have been tested successfully :) Here the new page which also contains a link to the .brd files: http://www.ucapps.de/mbhp_line_driver.html Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
Alasdair Moon Posted December 8, 2014 Report Share Posted December 8, 2014 If someone does a bulkorder of this fine PCBs .. I'm in ... 1 Quote Link to comment Share on other sites More sharing options...
mfk Posted December 8, 2014 Report Share Posted December 8, 2014 Me too. Quote Link to comment Share on other sites More sharing options...
jab Posted December 9, 2014 Report Share Posted December 9, 2014 x3 Thanks and nice work TK! Quote Link to comment Share on other sites More sharing options...
k-rAd MB6401 Posted December 9, 2014 Report Share Posted December 9, 2014 (edited) Thanks T.K. This is awesome. I will most likely be adding this to my seqv4 when i get it up and running. Sorry if this is a dumb annoying question but.... Why not just make it a shared project on oshpark.com? Looking at the .brd in Kicad now....nice layout! So i had to fill the ground plane when i opened it in kicad but otherwise it seems to be in tact. Edited December 9, 2014 by k-rAd MB6401 Quote Link to comment Share on other sites More sharing options...
Zam Posted December 28, 2014 Report Share Posted December 28, 2014 Hey Interested in this for my build, just have some questions :) is it possible to chain multiple line transmitter like this ? CORE<-->line<-->DIN/DOUT/AIN/AOUT<-->line<-->DIN/DOUT/AIN/AOUT Zam Quote Link to comment Share on other sites More sharing options...
latigid on Posted December 28, 2014 Report Share Posted December 28, 2014 In theory I think it should, although you may run into latency problems if you cascade too many chains. Are you planning to use two different cases? Can you not just run two Cores? Also AOUT is limited to 8 channels for most applications at the moment. Quote Link to comment Share on other sites More sharing options...
Zam Posted December 30, 2014 Report Share Posted December 30, 2014 In theory I think it should, although you may run into latency problems if you cascade too many chains. Are you planning to use two different cases? Can you not just run two Cores? Also AOUT is limited to 8 channels for most applications at the moment. Hello What amount of latency ? if it's in the ms range it's not a problem for me. My built is an automated fader system for a 40 years old analog modular desk, I have some room issue in the frame, core and PSU have to be outside (maybe in a 19' rack few meter away), also interconnection/link between subframe (8 modules, channel/fader) need long wire due to mechanical restriction. It's not really different cases but in fact I have to think like it was :happy: Multi core is an available option I read somewhere in the forum that someone run two chained AOUT_NG with succes This line transmitter deserve a try in my build for sure... Zam Quote Link to comment Share on other sites More sharing options...
TK. Posted December 30, 2014 Author Report Share Posted December 30, 2014 It should work, latency shouldn't be an issue - but I never tested this by myself, and I can't exactly say how many MBHP_DRIVER modules can be used in a chain. But with only two drivers in the chain it should work. Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
Zam Posted January 1, 2015 Report Share Posted January 1, 2015 It should work, latency shouldn't be an issue - but I never tested this by myself, and I can't exactly say how many MBHP_DRIVER modules can be used in a chain. But with only two drivers in the chain it should work. Best Regards, Thorsten. Tks for info TK I will try! just need to fix/test other part of my build before :) best Zam Quote Link to comment Share on other sites More sharing options...
sneakthief Posted January 14, 2015 Report Share Posted January 14, 2015 (edited) [status: order closed] I'm ordering 10 pairs of Transmitter/Receiver boards and selling 9 pairs. I'll ship them out at the end of January and will only take payment at that time. Update as of 01.30.2015 @ 11.00 - all boards shipped: mfk: 1 pair- shipped borfo: 1 pair - shipped rowan: 1 pair - shipped CJ55: 1 pair - shipped jojjelito: 1 pair - shipped monokinetic: 2 pairs - shipped Ungleichklang: 1 pair - shipped grizz: 1 pair - shipped (Notes: This is just a one-off run, I won't be doing any more. If anyone else needs more, I suggest simply uploading the .brd files to OSHPark.com or following this thread for other possible groupbuys) Edited January 30, 2015 by sneakthief Quote Link to comment Share on other sites More sharing options...
mfk Posted January 14, 2015 Report Share Posted January 14, 2015 (edited) ORDER! 2 pair. thanks! Edited January 15, 2015 by mfk Quote Link to comment Share on other sites More sharing options...
borfo Posted January 14, 2015 Report Share Posted January 14, 2015 Please confirm your order & quantity in a post below. First come, first serve. I'll update this thread when I've received the PCBs and open a new dedicated thread if all 9 haven't been accounted for :smile: One pair please. Quote Link to comment Share on other sites More sharing options...
Rowan Posted January 14, 2015 Report Share Posted January 14, 2015 I'll take one pair Quote Link to comment Share on other sites More sharing options...
CJ55 Posted January 14, 2015 Report Share Posted January 14, 2015 Oh yes! I will take one pair, too. Thank you! Quote Link to comment Share on other sites More sharing options...
jojjelito Posted January 14, 2015 Report Share Posted January 14, 2015 I'd like a pair of those too please. Thanks! Quote Link to comment Share on other sites More sharing options...
monokinetic Posted January 14, 2015 Report Share Posted January 14, 2015 2 pairs for me please. Thanks for offering! Quote Link to comment Share on other sites More sharing options...
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