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Wednesday
Sep012004

LCD Displays

The LED seven segment displays have one big disadvantage in that you can't see an LED in flurescent lights or in sunlight.

For this reason we explored using a seven segment LCD.

Findings:

Lumex: makes a .5" character height 2.5 digit LCD which can be had for 1.78 from digikey

Things which still need to be worked out.
1) need a higher AC voltage
2) need 14 (7*2 for segments) + 2 (switches) + 1 (COM pin)
3) doesn't save us any money
4) Package takes up an additional .1"

Possible workarounds:
1) perhaps not having the scr in the circuit and having the PIC go to sleep.

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