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authornpoirey <nicolas.poirey@gmail.com>2017-06-23 21:25:46 +0200
committernpoirey <nicolas.poirey@gmail.com>2017-06-23 21:25:46 +0200
commitde80e2c756508fbd14562ece23b0cbdfbb959e1f (patch)
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+# My take on a splitted keyboard
+
+default layout :
+[default layout](http://i.imgur.com/r2Nvr4p.png)
+
+the thing when finished :
+http://imgur.com/a/6FY8v
+
+concept and mockup:
+http://imgur.com/a/R0vvs
+
+to build :
+
+ docker run --rm -e keymap=default -e keyboard=frenchdev --rm -v D:/Repositories/qmk:/qmk:rw edasque/qmk_firmware
+
+
+The PHYSICAL rows and columns are connected as such :
+
+on right hand (slave) :
+
+ I2C mcp23018
+ .------- --------.
+ GND -| 1 VSS \_/ NC 28 |
+ | 2 NC A7 27 |- C15
+ R5 -| 3 B0 A6 26 |- C14
+ R4 -| 4 B1 A5 25 |- C13
+ R3 -| 5 B2 A4 24 |- C12
+ R2 -| 6 B3 A3 23 |- C11
+ R1 -| 7 B4 A2 22 |- C10
+ R0 -| 8 B5 A1 21 |- C9
+ | 9 B6 A0 20 |- C8
+ | 10 B7 INTA 19 |
+ VCC -| 11 VDD INTB 18 |
+ SCL -| 12 SCL NC 17 |
+ SDA -| 13 SDA RST 16 |- VCC
+ | 14 NC ADDR 15 |- GND
+ `------------------'
+
+and on left hand (main) :
+
+ TEENSY
+ .------------------.
+ | GND VCC |
+ C7 -| B0 F0 |- R5
+ C6 -| B1 F1 |- R4
+ C5 -| B2 F4 |- R3
+ C4 -| B3 F5 |- R2
+ LEDC -| B7 F6 |- R1
+ SCL -| D0 F7 |- R0
+ SDA -| D1 B6 |- LEDB
+ C3 -| D2 B5 |- LEDA
+ C2 -| D3 B4 |
+ C1 -| C6 D7 |
+ C0 -| C7 D6 |- GND
+ | D5 D4 |
+ | VCC RST |
+ | E6 GND |
+ `------------------'
+
+we use pull up resistor for SCL et VDA, see https://github.com/ErgoDox-EZ/docs/blob/master/ErgoDox%20EZ%20Schematic.pdf for example
+
+the connector is a standard TRRS (jack with audio + mic)
+
+Diode direction is row to column