|
|
@@ -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): |
|
|
|
|
|
|
|
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? |
|
|
|
|
|
|
|
To change pin configuration edit config.h. |
|
|
|
4704 Connector |
|
|
|
-------------- |
|
|
|
Keyboard Plug from front |
|
|
|
|
|
|
|
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. |
|
|
|
|
|
|
|
|
|
|
|
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. |
|
|
|
|
|
|
|
|
|
|
|
Build Firmware |