At 02:49 PM 3/30/2010, alan smith wrote: >In that I have never driven glass direct like this, it seems pretty >straight forward, similar to driving LED display...but...the part >requires 5VAC.. > >Whats the best way to generate this? How have others handled it? I drive static LCD's using several 74hc595 shift registers. The update rate is fairly low (10ms per packet, 50Hz backplane) and its easy to do. The last project I did this with used a 12F675 and 5- 74hc595's to drive a 4 digit display with annunciators. I've been using static LCD glass because of the extreme temperatures that I need them to operate at. I have two designs that run reliably down to -40C, although the displays are extremely sluggish at that temperature. I use displays from LXD, some of which are rated to operate down to -55C (and not freeze). Those same displays run reliably at 40C without turning black. dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist