ridingqwerty 0f7d294ac3 Remove filesize changes from default-ish rules.mk files, sans handwired (#8040) %!s(int64=5) %!d(string=hai) anos
..
featherble e96cac0814 Cleanup rules.mk for 32U4 keyboards, L-M (#7120) %!s(int64=5) %!d(string=hai) anos
keymaps f14629ed1c Remove/migrate action_get_macro()s from default keymaps (#5625) %!s(int64=6) %!d(string=hai) anos
promicro 363cdb5fc0 Remove duplicate pro_micro.h (#7246) %!s(int64=5) %!d(string=hai) anos
TWIlib.c a9a46adba0 Add support for Meira %!s(int64=7) %!d(string=hai) anos
TWIlib.h a9a46adba0 Add support for Meira %!s(int64=7) %!d(string=hai) anos
config.h fc06986989 Remove CUSTOM_MATRIX option from diode direction (#5090) %!s(int64=6) %!d(string=hai) anos
issi.c a9a46adba0 Add support for Meira %!s(int64=7) %!d(string=hai) anos
issi.h a9a46adba0 Add support for Meira %!s(int64=7) %!d(string=hai) anos
lighting.c bd1ad405bf Update Meira for revision 1.1 to enable backlighting by default (#2468) %!s(int64=7) %!d(string=hai) anos
lighting.h a9a46adba0 Add support for Meira %!s(int64=7) %!d(string=hai) anos
matrix.c 363cdb5fc0 Remove duplicate pro_micro.h (#7246) %!s(int64=5) %!d(string=hai) anos
meira.c 3ea7c2a434 Remove empty action_function() %!s(int64=6) %!d(string=hai) anos
meira.h b4bdebab9a Meira updates for bluetooth and audio (#2731) %!s(int64=7) %!d(string=hai) anos
readme.md c8cbee5d71 Modified URLs to point to new locations %!s(int64=6) %!d(string=hai) anos
rules.mk 0f7d294ac3 Remove filesize changes from default-ish rules.mk files, sans handwired (#8040) %!s(int64=5) %!d(string=hai) anos

readme.md

Meira

Miera

A 4x12 ortholinear low-profile keyboard.

Keyboard Maintainer: Cole Markham
Hardware Supported: Meira/ProMicro, Meira/FeatherBLE
Hardware Availability: WoodKeys.click

Two controllers are support: the Pro Micro, and the Adafruit Feather BLE 32u4. Support for each is defined as a hardware revision subfolder in QMK. Main differences include processor frequencies and matrix pinouts.

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

make meira/promicro:default

or

make meira/featherble:default

See build environment setup then the make instructions for more information on generic QMK configuration and setup.

Both the Pro Micro and the Feather BLE use the Catalina bootloader, which is typically programmed using avrdude.

Matrix

In order to have enough pins for the matrix and other functions, a custom matrix is implemented using a demultiplexer to scan the columns. Since the demux is active low, the diodes must be oriented with the cathode connected to the demux pin. When looking at the bottom of the board with the controller at the top right, the cathode mark on the diode should be toward the left.

LED Controller

The in-switch LEDs are driven by an ISSI LED controller (IS31FL3731). The micro controller communicates with this chip using I2C. Individual LED control is possible, but currently only general backlighting support is implemented. This functionality is located in lighting.c, issi.c, and TWILib.c.