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This firmware converts IBM 4704 keyboard protocol to USB HID.
+Keyboard initialization process takes a few seconds at start up. During that you will hear buzzer from the keyboard. **You need to plug USB cable after hooking up your keyboard to the converter.**
+
4704 Connector
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- Keyboard Plug from front
+Keyboard Plug from front:
DSUB-9
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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.
+2. Connect CLOCK to PD1 and DATA to PD0. You can change pin with config.h.
3. Optionally you may need pull-up register. 1KOhm probably work.