Using calculator display for arduino.

[Ufoguy]

Calculators are available cheaply for around a dollar. Can I use it's display with arduino. If yes how?

[johnwasser]

See application note AVR241 from Atmel: "Direct driving of LCD display using general IO":

http://atmel.com/dyn/resources/prod_documents/doc2569.pdf

[robtillaart]

Or you can connect the buttons on the calculator to IO pins or relays or so to contol the device ... (nice project for a school)

[AWOL]

Some of the interconnects on these cheap devices can be very hard to hack. You may find with the number you will wreck, it would be cheaper overall to buy a display.