====== Button LED Matrix (BLM16x16+X) Control Surface ======

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[[http://www.ucapps.de/midibox_seq_manual_blm.html|uCapps.de Overview]]\\
[[http://midibox.org/forums/forum/43-midibox-blm/|MIDIbox BLM Forum]]

<box 80% round #dddddd>The BLM is a button grid control surface with LED feedback that can be used as a controller for the MIDIbox SEQ V4, as well as for the SEQ V4L.  The full-size BLM (the "16x16+X") has a 16x16 button grid, with extra control buttons along the sides. Larger or smaller BLMs are possible - the BLM protocol scales to accommodate different button matrix sizes.\\
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There are many BLM options available.  You can build a hardware BLM - some users have designed PCBs, others have used veroboard. Ilmenator has created a [[:16x4blm_pcb|16x4 hardware BLM]].  A Lemur application is available that provides a virtual BLM on an iPad.  BLM emulation software is available for Linux, Windows, and Mac computers.  The Lemur app and the emulator software can be downloaded on [[http://www.ucapps.de/midibox_seq_manual_blm.html|this page]].</box>

  * **[[mididocs:seq:blm16x16_build_guide|BLM 16x16+X Build Guide]]** based on Latigid On's design

  * **[[mididocs:seq:LaunchpadBLM|Novation Launchpad BLM]]** - Since firmware version 87, the SEQ V4 supports the use of two Novation Launchpads as a [[http://ucapps.de/midibox_seq_manual_blm.html|BLM control surface.]]  Two Launchpads form a 16x8+X BLM, and up to four can be connected to make a full 16x16+X control surface.  Setup instructions.

  * **[[mididocs:seq:usingBLM|Using the BLM]]** - Some info on the features of the MIDIbox SEQ BLM and how it can be used.  See also the [[http://www.ucapps.de/midibox_seq_manual_blm.html|uCapps.de BLM Overview]]