- January
- 30th
- 2008
HD44780 FTDI USB LCD
Posted by MaEl in: Do-it-Yourself Comments (5)
Objective :
- simple wiring usb lcd (less components=less work=less cost)
- compatible with windows and linux
- Plug n Play(USB - modern PC usually don’t have parallel port anymore)
Inspiration:
Simple USB LCD
SlugTerm - A Terminal for my Slug
Details
The FTDI chip support bit bang mode in 8 bits.Some chip even have dual controller so it doubles to 16 bits.The lcdproc-development(linux) already have the HD44780-ftdi driver for the dual controller based.The HD44780 is driven in 8 bits using the first channel and using the second channel for controlling the RS,RW,E and backlight.
However for this project,It requires only one channel of the bit bang mode.The HD44780 will be driven in 4 bits mode.4 bits of the bit bang mode are for data and other 3 will be used for RS,RW,E.The extra 1 bit can be use for controlling backlight,key..etc
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- January
- 30th
- 2008
Inspiration
Posted by MaEl in: Personal-Stuff Comments (0)
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