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daniel5151 and drashna RGB Matrix support for Massdrop CTRL/ALT (#5328)
* port Massdrop CTRL/ALT to use RGB Matrix

Co-authored-by: Matt Schneeberger <>

* Massdrop lighting support working

This commit is to get the Massdrop lighting code working again through use of the compilation define USE_MASSDROP_CONFIGURATOR added to a keymap's
Added keymaps for both CTRL and ALT named default_md and mac_md. These should be used if the Massdrop style lighting is desired.

* Updating config based on testing results with patrickmt & compile errors

* Updates for PR5328

For CTRL and ALT:
Moved location of new RGB Matrix macros from config_led.h to config.h.
Added RGB_MATRIX_LED_FLUSH_LIMIT (time between flushes) to config.h for correct LED driver update timing.
Re-added missing breathing code for when Massdrop configurator mode is defined.

* remove prilik keymap form PR
Latest commit 763b26c Apr 4, 2019
Type Name Latest commit message Commit time
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keymaps RGB Matrix support for Massdrop CTRL/ALT (#5328) Apr 4, 2019
config.h RGB Matrix support for Massdrop CTRL/ALT (#5328) Apr 4, 2019
info.json Keyboard: Rename alt67 to alt (#3824) Sep 1, 2018
matrix.h Keyboard: Rename alt67 to alt (#3824) Sep 1, 2018 Keyboard: Rename alt67 to alt (#3824) Sep 1, 2018



The Massdrop ALT is a 65% mechanical keyboard featuring dual USB-C connectors, an integrated Hi-Speed USB 2.0 hub, and fully customizable RGB backlighting and underlighting.

Keyboard Maintainer: Massdrop
Hardware Supported: Massdrop, Inc. ALT PCBs utilizing Microchip's ATSAMD51J18A MCU and USB2422 2-Port USB 2.0 Hi-Speed Hub Controller, and ISSI's IS31FL3733 LED Drivers.
Hardware Availability: Massdrop ALT Mechanical Keyboard

Make example for this keyboard (after setting up your build environment):

make massdrop/alt:default

For information on flashing this keyboard, visit the following links:

Massdrop Loader Releases
Massdrop Loader Repository and Instructions

See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.

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