This readme and most of the code are from https://github.com/ahtn/tmk_keyboard/
**Please note this guide is a heavy work in progress and is based heavily off of the Let's Split guide.
Split keyboard firmware for Arduino Pro Micro or other ATmega32u4
based boards.
@ -9,23 +9,20 @@ based boards.
## Build Guide
A build guide for putting together the Let's Split v2 can be found here: [An Overly Verbose Guide to Building a Let's Split Keyboard](https://github.com/nicinabox/lets-split-guide)
There is additional information there about flashing and adding RGB underglow.
Coming soon!
## First Time Setup
Download or clone the whole firmware and navigate to the keyboards/lets_split directory. Once your dev env is setup, you'll be able to generate the default .hex using:
Download or clone the whole firmware and navigate to the keyboards/orthodox directory. Once your dev env is setup, you'll be able to generate the default .hex using:
```
$ make rev2
$ make rev1
```
You will see a lot of output and if everything worked correctly you will see the built hex files:
```
lets_split_rev2_serial.hex
lets_split_rev2_i2c.hex
orhtodox_rev1_serial.hex
```
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:
@ -57,9 +54,7 @@ Some features supported by the firmware:
independently.
* You only need 3 wires to connect the two halves. Two for VCC and GND and one
for serial communication.
* Optional support for I2C connection between the two halves if for some
reason you require a faster connection between the two halves. Note this
requires an extra wire between halves and pull-up resistors on the data lines.
Required Hardware
-----------------
@ -71,34 +66,8 @@ will need:
* 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.
Then wire your key matrix to any of the remaining 17 IO pins of the pro micro
8 years ago