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128 button/led matrix


Marxon

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Hi MidiBoxers,

I am a little bit confused about the different

ways to make button/led matrices.

Which layout should i use to create a 128 button and 128 led matrix

for the Midibox-NG? What dis/advantages do they have and why?

Layout 1) SeqV4 wiring (64 buttons, 2x64 leds) + 2x DINX4 (64 buttons)

Layout 2) Midibox 128V3 wiring (128 buttons) + ?

Layout 3) BLM Scalar wiring with only 2 modules (128 buttons + 2x128 leds)

Thanks for your advice!

Best regards

Marxon

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Hi,

BLMs are very firmware specific, with BLM_SCALAR I'm trying to standardize this for controllers.

Layout 1) SeqV4 wiring (64 buttons, 2x64 leds) + 2x DINX4 (64 buttons)

A dedicated layout for MBSEQ V4 which I wouldn't recommend for controllers since it requires a special firmware handling.

Layout 2) Midibox 128V3 wiring (128 buttons) + ?

Only difference between this and Layout 1) and 3) is, that there are no LEDs!

Layout 3) BLM Scalar wiring with only 2 modules (128 buttons + 2x128 leds)

Recommended layout since it will be supported by MBNG

Advantage: scalability is much better (therefore it's called BLM_SCALAR), also a PCB layout is more simple.

Best Regards, Thorsten.

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