16x4 blm with dio-matrix and dout module possible?

[Alasdair Moon]

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 enough

http://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

[latigid on]

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.

[Alasdair Moon]

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