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94 lines
3.1 KiB
Markdown
94 lines
3.1 KiB
Markdown
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# Dactyl with Arduino Pro Micro
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See https://github.com/adereth/dactyl-keyboard for the original Version.
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This Dactyl uses the Arduino Pro Mirco (2x).
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Wiring is a 6x6 Matrix like the [Dactyl Manuform](https://github.com/qmk/qmk_firmware/tree/master/keyboards/handwired/dactyl_manuform)
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## Build the Firmware:
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- Build the firmware with `make handwired/dactyl_promicro:<keymapname>`, for example `make handwired/dactyl:default`
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- This will result in a hex file called `handwired_dactyl_promicro_<keymapname>.hex`, e.g.
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`handwired_dactyl_promicro_default.hex`
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How to setup your build enviroment can be found here: [Installing Build Tools](https://docs.qmk.fm/#/getting_started_build_tools)
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## Required Hardware
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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 Micros. You can find these on AliExpress for ≈3.50USD each.
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* 2 TRRS sockets and 1 TRRS cable, or 2 TRS sockets and 1 TRS cable
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Alternatively, you can use any sort of cable and socket that has at least 3
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wires. If you want to use I2C to communicate between halves, you will need a
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cable with at least 4 wires and 2x 4.7kΩ pull-up resistors
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## Optional Hardware
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A speaker can be hooked-up to either side to the `5` (`C6`) pin and `GND`, and turned on via `AUDIO_ENABLE`.
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## Wiring
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The 3 wires of the TRS/TRRS cable need to connect GND, VCC, and digital pin 3 (i.e.
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PD0 on the ATmega32u4) between the two Pro Micros.
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Next, wire your key matrix to any of the remaining 17 IO pins of the pro micro
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and modify the `matrix.c` accordingly.
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The wiring for serial:
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The wiring for i2c:
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The pull-up resistors may be placed on either half. It is also possible
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to use 4 resistors and have the pull-ups in both halves, but this is
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unnecessary in simple use cases.
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You can change your configuration between serial and i2c by modifying your `config.h` file.
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## Notes on Software Configuration
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the keymaps in here are for the 4x5 layout of the keyboard only.
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## Flashing
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To flash your firmware take a look at: [Flashing Instructions and Bootloader Information](https://docs.qmk.fm/#/flashing).
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Under Windows the most convenient way is installing the [QMK Drivers](https://github.com/qmk/qmk_driver_installer/releases) and use the [QMK Toolbox](https://github.com/qmk/qmk_toolbox/releases).
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## Choosing which board to plug the USB cable into (choosing Master)
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### Setting the right or left 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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OR
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```
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#define MASTER_LEFT
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```
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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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