lcd scroller board · Dec 17, 01:17 PM
live scrolling ansi
for the lcd scrollers we wanted to avoid using a PC for each piece, since all we wanted was to scroll ansi. we decided to go with the Propeller Proto Board (thank you joe grand) using the P8X32A-Q44 propeller chip and 64KB of EEPROM
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the scroller was written in parallax’s SPIN language using a VGA driver from the object exchange and an SD card driver. the boards had enough memory to store the functionality of scrolling (thanks to aempirei), but not enough room for the ansi itself, the font, and color mapping. so we attached an SD card (thank you asm) to store those.
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our first finished scroller, complete with up and down buttons to scroll manually. we haven’t decided on the power source being a plug or a 9volt yet, however, using the SD card turned out well since we can swap the ansis out easily.
all that’s left is to decide on how we’re going to frame each one, maybe gut the LCD screens a bit so they’re thinner.
— acidjazz
