Alasdair Moon Posted April 11, 2015 Report Share Posted April 11, 2015 (edited) Hi folks, I saw the wiki of the 16x4 BLM board www.midibox.org/dokuwiki/doku.php?id=16x4blm_pcb and got my hands on one from a bulk order .... but I was wondering .. could I build my own BLM 16x4 by using standard dio and dout boards?? If I read the wiki well I need 2 DIN shift registres and 6 DOUT shift registers .. so I could use one DIO Matrix board and a second DOUTx4 board too, right? .. Seeing this pdf from the dio wiki page I'm unsure if not only one dio module is enoughhttp://www.ucapps.de/mbhp/mbhp_dio_matrix_8x16buttons_8x8leds.pdf Do I really need the dual color leds?? Hmmm .. maybe if tracks have different lenght .. My question is .. could someone show me how I should tconnect the buttons and led to the shift registers?? .. best in form of the nice pdf files tk provides us with. Advantage for me would be that I can bring the buttons in line with the Seqv4 wilba design and also use the same switches ... Or would it be much easier to use the MBBLM via Lemur .. for Lemur now is available on Android too??? Edited April 11, 2015 by Ungleichklang Quote Link to comment Share on other sites More sharing options...
latigid on Posted April 11, 2015 Report Share Posted April 11, 2015 Did you want to build your own BLM PCB (either fabbed or on Veroboard)? If so, it's more than possible but involves some work: http://www.ucapps.de/mbhp/button_duoled_matrix.pdf http://www.midibox.org/midibox_seq_blm_ext/ But if you have the PCB already, you have everything you need to make it work, the SRIO chain is onboard via SMDs. 1 Quote Link to comment Share on other sites More sharing options...
Alasdair Moon Posted April 12, 2015 Author Report Share Posted April 12, 2015 (edited) Exactly that pdf i was looking for ... 64 button + duo led .. ty And yes .. I wanted to use dot matrix boards for the switches, leds and diodes .. wire them as matrix with verowire or copper wire like this www.reichelt.de/Kupferlackdraht/CUL-100-0-28/3/index.html?&ACTION=3&LA=2&ARTICLE=57179&GROUPID=4484&artnr=CUL+100/0,28 So if i use one dio matrix and one dout .. i have all the SR i need and only need to alter the blm part of the config file .. great Edited April 12, 2015 by Ungleichklang Quote Link to comment Share on other sites More sharing options...
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