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165 lines
6.3 KiB
Markdown
165 lines
6.3 KiB
Markdown
Orthodox
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========
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*Please note this guide is a work in progress and is based directly on the Let's Split guide.*
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Orthodox is a split ortholinear keyboard with thumb-clusters designed in 2017 by /u/Deductivemonkee, expected to be available in group buys.
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Each half has 18 keys in a 3x6 grid and a five key thumb-cluster, of which three use 1.25-unit keycaps.
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Its firmware is based on the Let's Split's.
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Each side is controlled by an Arduino Pro Micro (or compatible), and they're connected by a TRRS cable using the serial protocol.
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Support for the protocol using TWI (i2c®) is a work-in-progress.
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## Revisions
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- `Rev.1` Prototype GB version, supporting only Pro Micro in the corner footprint, and using PCB top- and bottom-plates.
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Note that the second number after the `Rev.` text is the pcb *order number.* The prototypes will say 1, and the next order of any revision will say 2 and so on.
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## Keymaps
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[The default layout can be unofficially referred to here.](http://www.keyboard-layout-editor.com/#/gists/f120e2703a22a6a69c7be9a65a9d1342)
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The thumb-clusters are an extension of row 2 and row 3 along columns 7, 8, and 9.
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Row 2 does not have a physical key in column 8, so when editing keymaps a placeholder constant (`XXXXXXX` or `KC_NO`) must be used in the row2-col8 position.
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## Build Guide
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[Official build guide by /u/Deductivemonkee](http://imgur.com/a/9c0NP)
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For further reading on build- and flashing-procedures for split ortholinear skeleton-case keyboards, please refer to [An Overly Verbose Guide to Building a Let's Split Keyboard](https://github.com/nicinabox/lets-split-guide), much of which can be applied to the Orthodox.
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## First Time Setup
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Download or clone the whole firmware and navigate to the root directory. Once your dev env is setup, you'll be able to generate the default .hex using:
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```
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$ make orthodox/rev1:default
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```
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You will see a lot of output and if everything worked correctly you will see the built hex files in your *root qmk_firmware directory* two levels up:
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```
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orthodox_rev1_default.hex
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```
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If you would like to use one of the alternative keymaps, or create your own, copy one of the existing [keymaps](keymaps/) and run make like so:
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```
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$ make orthodox/rev1:YOUR_KEYMAP_NAME
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```
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If everything worked correctly you will see a file:
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```
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orthodox_rev1_YOUR_KEYMAP_NAME.hex
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```
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For more information on customizing keymaps, take a look at the primary documentation for [Customizing Your Keymap](/readme.md##customizing-your-keymap) in the main readme.md.
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Features
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--------
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For the full Quantum Mechanical Keyboard feature list, see [the parent readme.md](/readme.md).
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Some features supported by the firmware:
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* Either half can connect to the computer via USB, or both halves can be used
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independently.
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* You only need 3 wires to connect the two halves. Two for VCC and GND and one
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for serial communication.
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Required Hardware
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-----------------
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Apart from diodes and key switches for the keyboard matrix in each half, you
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will need:
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* 2 Arduino Pro Micro's. You can find theses on aliexpress for ≈3.50USD each.
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* 2 TRRS sockets and 1 TRRS cable
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Notes on Software Configuration
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-------------------------------
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Configuring the firmware is similar to any other QMK project. One thing
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to note is that `MATRIX_ROWS` in `config.h` is the total number of rows between
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the two halves, i.e. if your split keyboard has 3 rows in each half, then
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`MATRIX_ROWS=6`.
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Flashing
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-------
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From the root directory run `make PROJECT:KEYMAP:avrdude` for automatic serial port resolution and flashing.
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Example: `make orthodox/rev2:default:avrdude`
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Choosing which board to plug the USB cable into (choosing Master)
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--------
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Because the two boards are identical, the firmware has logic to differentiate the left and right board.
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It uses two strategies to figure things out: look at the EEPROM (memory on the chip) or looks if the current board has the usb cable.
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The EEPROM approach requires additional setup (flashing the eeeprom) but allows you to swap the usb cable to either side.
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The USB cable approach is easier to setup and if you just want the usb cable on the left board, you do not need to do anything extra.
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### Setting the left hand as master
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If you always plug the usb cable into the left board, nothing extra is needed as this is the default. Comment out `EE_HANDS` and comment out `I2C_MASTER_RIGHT` or `MASTER_RIGHT` if for some reason it was set.
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### Setting the right hand as master
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If you always plug the usb cable into the right board, add an extra flag to your `config.h`
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```
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#define MASTER_RIGHT
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```
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### Setting EE_hands to use either hands as master
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If you define `EE_HANDS` in your `config.h`, you will need to set the
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EEPROM for the left and right halves.
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The EEPROM is used to store whether the
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half is left handed or right handed. This makes it so that the same firmware
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file will run on both hands instead of having to flash [left](../lets_split/eeprom-lefthand.eep) and [right](../lets_split/eeprom-righthand.eep) handed
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versions of the firmware to each half. To flash the EEPROM file for the left
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half run:
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```
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avrdude -p atmega32u4 -P $(COM_PORT) -c avr109 -U eeprom:w:eeprom-lefthand.eep
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// or the equivalent in dfu-programmer
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```
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and similarly for right half
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```
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avrdude -p atmega32u4 -P $(COM_PORT) -c avr109 -U eeprom:w:eeprom-righhand.eep
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// or the equivalent in dfu-programmer
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```
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NOTE: replace `$(COM_PORT)` with the port of your device (e.g. `/dev/ttyACM0`)
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After you have flashed the EEPROM, you then need to set `EE_HANDS` in your config.h, rebuild the hex files and reflash.
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Note that you need to program both halves, but you have the option of using
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different keymaps for each half. You could program the left half with a QWERTY
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layout and the right half with a Colemak layout using bootmagic's default layout option.
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Then if you connect the left half to a computer by USB the keyboard will use QWERTY and Colemak when the
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right half is connected.
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Notes on Using Pro Micro 3.3V
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-----------------------------
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Do update the `F_CPU` parameter in `rules.mk` to `8000000` which reflects
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the frequency on the 3.3V board.
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Also, if the slave board is producing weird characters in certain columns,
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update the following line in `matrix.c` to the following:
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```
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// _delay_us(30); // without this wait read unstable value.
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_delay_us(300); // without this wait read unstable value.
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```
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