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Add README.md

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tmk 2014-02-10 07:02:48 +09:00
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converter/ibm4704_usb/README.md
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@ -3,16 +3,29 @@ IBM 4704 to USB keyboard converter
This firmware converts IBM 4704 keyboard protocol to USB HID.
Connect Wires
-------------
In case of Teensy2.0(ATMega32U4):
4704 Connector
--------------
Keyboard Plug from front
1. Connect Vcc and GND.
2. Connect Clock and Data line.
- Clock is on PD1 and Data on PD2.
3. Optionally you need pull-up register. 1KOhm is OK?
DSUB-9
-------------
\ N 2 3 4 5 /
\ N N N N /
---------
2 GND
3 VCC 5V
4 DATA
5 CLOCK
N No connection/No pin.
To change pin configuration edit config.h.
Connection
----------
In case of using ATMega32U4(Teensy2.0):
1. Supply power with VCC and GND.
2. Connect CLOCK to PD1 and DATA to PD2. You can change pin with config.h.
3. Optionally you may need pull-up register. 1KOhm probably work.
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