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Replace figures in docs/feature_split_keyboard.md #10242

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Sep 7, 2020
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Replace figures in docs/feature_split_keyboard.md #10242

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195c8a3
Replace figures in feature_split_keyboard.md
mtei Sep 5, 2020
910d873
fig update
mtei Sep 5, 2020
56c0808
Update docs/feature_split_keyboard.md
mtei Sep 7, 2020
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7 changes: 4 additions & 3 deletions docs/feature_split_keyboard.md
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Expand Up @@ -48,19 +48,20 @@ However, USB cables, SATA cables, and even just 4 wires have been known to be us

### Serial Wiring

The 3 wires of the TRS/TRRS cable need to connect GND, VCC, and D0 (aka PDO or pin 3) between the two Pro Micros.
The 3 wires of the TRS/TRRS cable need to connect GND, VCC, and D0/D1/D2/D3 (aka PD0/PD1/PD2/PD3) between the two Pro Micros.

?> Note that the pin used here is actually set by `SOFT_SERIAL_PIN` below.

![serial wiring](https://i.imgur.com/C3D1GAQ.png)
<img alt="sk-pd0-connection-mono" src="https://user-images.githubusercontent.com/2170248/92296488-28e9ad80-ef70-11ea-98be-c40cb48a0319.JPG" width="48%"/>
<img alt="sk-pd2-connection-mono" src="https://user-images.githubusercontent.com/2170248/92296490-2d15cb00-ef70-11ea-801f-5ace313013e6.JPG" width="48%"/>

### I<sup>2</sup>C Wiring

The 4 wires of the TRRS cable need to connect GND, VCC, and SCL and SDA (aka PD0/pin 3 and PD1/pin 2, respectively) between the two Pro Micros.

The pull-up resistors may be placed on either half. If you wish to use the halves independently, it is also possible to use 4 resistors and have the pull-ups in both halves.

![I2C wiring](https://i.imgur.com/Hbzhc6E.png)
<img alt="sk-i2c-connection-mono" src="https://user-images.githubusercontent.com/2170248/92297182-92b98580-ef77-11ea-9d7d-d6033914af43.JPG" width="50%"/>

## Firmware Configuration

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