rhaag71 / retroleds Goto Github PK

This is a 16x2 serial character display using the following HP/Avago/Broadcom LEDs:

HDSP-2107 HDSP-2112 HDSP-2110 HDSP-2111 HDSP-2113 HDSP-2122 HDSP-2121 HDSP-2123

Inform me if other LED displays work too.

The display consists of a pcb board and an arduino sketch.

Any character received on the serial port is shown on the LED display. The display provides a very complete ASCII character set, including accented characters, Japanese Katakana and Cyrillic. Other 5x7 bitmap fonts can be added if needed.

Optionally, a PS/2 keyboard can be connected. Any key typed on the keyboard is sent to the serial port. Together, display and PS/2 keyboard form a rudimentary serial terminal.

To use the display, a USB to serial adapter and a 5V power supply are needed. Plug a USB to 5V TTL serial cable into the serial port header. The serial port runs at 38400 8N1, no hardware flow control. Plug in a 5V DC 2A power supply, center pin positive, into the barrel jack connector. Carefully check connector polarity before plugging in.

Escape codes provide simple display control.

A blinking question mark '?' indicates an error condition, usually an unrecognized escape code.