5 replies to this topic

[maigre]

Hi !

I'm starting my first MB Seq V4 with the BLM extension.

Now i got everything from SmashTV soldered and ready to implement into a box.

Of course i will first start to build up a case for the sequencer (..blm_scalar pieces are on there way..)
but this lead me to different questions :

Hardware
---------
The main way to connect the Core32 module to the Core8 which drive the BLM is Midi.
You give here a third midi connection dedicated to the BLM (http://www.ucapps.de...ector_mbseq.pdf)
which, if i well understand, combine a Midi In & Out + the 5V Power Supply.
What would be the connection on the Core8 side ?
Connect midi in & out resp. to the core8 midi ports and power supply to J2 as proposed for multi-core powering (Midibox SID e.g.) ?

Software
--------
* As i'd like to build a custom panel, i'm digging into the SeqV4 config file.
I'm not sure to exactly understand the addressing method of input & output.
I understand the pin number for each shift register, but not how shift register are numeroted..
Maybe you could light me on that !

* Also the BLM part of the SeqV4 config file is a bit confused to me :
why are we talking about shift register here ? is that not the job of the Core8 module ?
and so, why only 2 (or 4) SR ? there is 5*4 = 20 SR if you build the complete BLM_SCALAR Module ...
I'm a bit lost on this point..

* To use BLM, i have to upload BLM firmware into the core 8. Any config ? i guess not if i follow the wiring schematic given by TK..

Ok i think that's it for today


Thanks !

By the way, thanks to smashTv: kits are really well made, PCBs are great, everything is in there, and it's quit cheap. very good job !
And also thanks to everybody around here, this whole midibox project is really cool! (i will not say it on every post but i mean it

Best Regards,
Thomas

[TK.]

Hi Thomas,

The main way to connect the Core32 module to the Core8 which drive the BLM is Midi.
You give here a third midi connection dedicated to the BLM (http://www.ucapps.de...ector_mbseq.pdf)
which, if i well understand, combine a Midi In & Out + the 5V Power Supply.
What would be the connection on the Core8 side ?
Connect midi in & out resp. to the core8 midi ports and power supply to J2 as proposed for multi-core powering (Midibox SID e.g.) ?

Yes - to be more exact:
MBSEQ MIDI IN3 -> BLM MIDI OUT
MBSEQ MIDI OUT3 -> BLM MIDI IN
MBSEQ 5V Power -> BLM J2

* As i'd like to build a custom panel, i'm digging into the SeqV4 config file.
I'm not sure to exactly understand the addressing method of input & output.
I understand the pin number for each shift register, but not how shift register are numeroted..
Maybe you could light me on that !

SR counting starts at 1 (0 disables a button/LED function)
The first shift register (SR) is number 1, the second SR is number 2, etc

* Also the BLM part of the SeqV4 config file is a bit confused to me :
why are we talking about shift register here ? is that not the job of the Core8 module ?
and so, why only 2 (or 4) SR ? there is 5*4 = 20 SR if you build the complete BLM_SCALAR Module ...
I'm a bit lost on this point..

Please ignore this part - for historical reasons MBSEQ supports two different BLM extensions as well, but they are not so powerful as the BLM16x16+X

All parameters which are starting with BLM_* are intended for a 4x16 matrix - it's expired and only used by people who used this feature for their MBSEQ V3
All parameters which are starting with BLM8x8_* are only used by Wilba's Frontpanel to reduce the number of shift registers

* To use BLM, i have to upload BLM firmware into the core 8. Any config ? i guess not if i follow the wiring schematic given by TK..

The configuration of BLM16x16+X is very very simple!

Just select OUT3 for BLM_SCALAR in the MIDI->Misc menu - thereafter an auto detection will be started at this port and the BLM16x16+X will be configured remotely from MBSEQ V4

This picture shows how the menu page looks like:


Best Regards, Thorsten.

[maigre]

all right !
thanks !

[maigre]

Hi,

back again on my Midibox construction

I have a question about the DOUT adressing :

there is a line of 16 leds under GP's buttons,
but i can not find where and how they are adressed in the config file...
Also it seems to be dual color leds..

I do not use the WIlba PCB but i would like to obtain something similar
with classic DIN & DOUT modules.

any clue ?

Thanks !

Best Regards,
Thomas

[maigre]

ok i get it :

# number of first and second DOUT shift register used for GP LEDs
GP_DOUT_L_SR 3
GP_DOUT_R_SR 4

# DOUTs for Dual Color option:
GP_DOUT_L2_SR 0
GP_DOUT_R2_SR 0




Thomas

[TK.]

Hi,

these are the wrong defines, because they are part of the old BLM driver, which is referenced, but not used at all (instead the new blm_scalar driver is used)

In order to make this clear, I removed all references to the old BLM driver and added all available defines to the Makefile:
http://svnmios.midib...scalar/Makefile

Please update your svn repository, or download blm_scalar_v1_0a.zip from the MIOS download section

Best Regards, Thorsten.