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| consul-vdx-term-keyboard-converter.ino | ||
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| README.md | ||
Keyboard Converter: Consul 262.5 & VDX 52600
Arduino project for a keyboard converter between a Zbrojovka Consul 262.5 terminal keyboard and a Videoton VDX 52600 terminal.
Keyboard: Consul 262.5
Terminal keyboard from 1980s. It uses a DB25 connector with UART TTL data lines, clock line, +5V primary power and -12V auxiliary power.
Terminal: VDX 52600
VT52 termnial with a DIN5 keyboard connector that dones not use the standard AT keyboard protocol.
Converter
Interfaces the keyboard and the terminal, optionally a USB. These modes of operation are supported:
- Keyboard and terminal connected: primary standalone mode. Everything is powered from the terminal.
- Keyboard and USB connected: USB keyboard mode. Powered from the USB which acts as a HID keyboard.
- Terminal and USB connected: Serial keyboard over USB mode. Powered independently. Allows sending keystrokes to the terminal over USB serial.
Parts needed
- Arduino Leonardo
- Symmetrical boost converter, 5V to +/- 12V
- Piezo speaker
- red and green LED + 470 ohm resistors
- connectors
- project box
- (among others)
Connections
TODO
Terminal DIN5
Device | Controller | Description GND | GND | Ground +5V | +5V | Power Data | 6 | Keyboard data to terminal Status | 7 | Status (LEDs) from terminal
Keyboard DB25
Device | Controller | Description GND | GND | Ground +5V | +5V | Power -12V | -12V | via a symmetrical boost converter Serial out | 3 | UART out from keyboard Serial in | 4 | UART in to keyboard
Box Interface
Controller | Description 10 | Offline LED 9 | Online LED 8 | Speaker