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- # Dactyl with Arduino Pro Micro
-
- See https://github.com/adereth/dactyl-keyboard for the original Version.
-
- This Dactyl uses the Arduino Pro Mirco (2x).
- Wiring is a 6x6 Matrix like the [Dactyl Manuform](https://github.com/qmk/qmk_firmware/tree/master/keyboards/handwired/dactyl_manuform)
-
-
- ## Build the Firmware:
-
- - Build the firmware with `make handwired/dactyl_promicro:<keymapname>`, for example `make handwired/dactyl:default`
- - This will result in a hex file called `handwired_dactyl_promicro_<keymapname>.hex`, e.g.
- `handwired_dactyl_promicro_default.hex`
-
- How to setup your build enviroment can be found here: [Installing Build Tools](https://docs.qmk.fm/#/getting_started_build_tools)
-
- ## Required Hardware
-
- Apart from diodes and key switches for the keyboard matrix in each half, you
- will need:
-
- * 2 Arduino Pro Micros. You can find these on AliExpress for ≈3.50USD each.
- * 2 TRRS sockets and 1 TRRS cable, or 2 TRS sockets and 1 TRS cable
-
- Alternatively, you can use any sort of cable and socket that has at least 3
- wires. If you want to use I2C to communicate between halves, you will need a
- cable with at least 4 wires and 2x 4.7kΩ pull-up resistors
-
- ## Optional Hardware
- A speaker can be hooked-up to either side to the `5` (`C6`) pin and `GND`, and turned on via `AUDIO_ENABLE`.
-
- ## Wiring
-
- The 3 wires of the TRS/TRRS cable need to connect GND, VCC, and digital pin 3 (i.e.
- PD0 on the ATmega32u4) between the two Pro Micros.
-
- Next, wire your key matrix to any of the remaining 17 IO pins of the pro micro
- and modify the `matrix.c` accordingly.
-
- The wiring for serial:
-
- ![serial wiring](https://i.imgur.com/C3D1GAQ.png)
-
- The wiring for i2c:
-
- ![i2c wiring](https://i.imgur.com/Hbzhc6E.png)
-
- The pull-up resistors may be placed on either half. It is also possible
- to use 4 resistors and have the pull-ups in both halves, but this is
- unnecessary in simple use cases.
-
- You can change your configuration between serial and i2c by modifying your `config.h` file.
-
- ## Notes on Software Configuration
-
- the keymaps in here are for the 4x5 layout of the keyboard only.
-
- ## Flashing
-
- To flash your firmware take a look at: [Flashing Instructions and Bootloader Information](https://docs.qmk.fm/#/flashing).
-
- 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).
-
-
- ## Choosing which board to plug the USB cable into (choosing Master)
-
- ### Setting the right or left hand as master
-
- If you always plug the usb cable into the right board, add an extra flag to your `config.h`
- ```
- #define MASTER_RIGHT
- ```
-
- OR
-
- ```
- #define MASTER_LEFT
- ```
-
-
- Notes on Using Pro Micro 3.3V
- -----------------------------
-
- Do update the `F_CPU` parameter in `rules.mk` to `8000000` which reflects
- the frequency on the 3.3V board.
-
- Also, if the slave board is producing weird characters in certain columns,
- update the following line in `matrix.c` to the following:
-
- ```
- // _delay_us(30); // without this wait read unstable value.
- _delay_us(300); // without this wait read unstable value.
- ```
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