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Topic: $0.99 12 digit LCD (Read 980 times) previous topic - next topic

walterr

This sure looks interesting:
http://www.pongrance.com/slcd.html

a 12 digit serial LCD (numeric only, no alpha) for a buck!

I did a quick search to see if I could find code to drive the NEC 7225 controller from an Arduino but got no hits. Sounds like it wouldn't be too hard to drive it though. Built in BCD to 7 segment decoder that you can disable.

Any opinions?

walterr

I guess I'll just have to order one and see what I can get it to do.

mrmeval

It should work very similar to a shift register. It only takes one wire for the serial input SI, has a C/D input, SCLK, CS and Reset.

It will take a bit of figuring on how to decode things. I'm not that good at it.

http://www.pacificdisplay.com/ics_app%20notes/nec/upd7225.pdf

http://www.pongrance.com/SLCD-data-notes.pdf

Quote
This sure looks interesting:
http://www.pongrance.com/slcd.html

a 12 digit serial LCD (numeric only, no alpha) for a buck!

I did a quick search to see if I could find code to drive the NEC 7225 controller from an Arduino but got no hits. Sounds like it wouldn't be too hard to drive it though. Built in BCD to 7 segment decoder that you can disable.

Any opinions?

If it was designed by man it can be repaired by man.

Oncemore

Here is the Application note
http://www.necel.com/nesdis/image/IEA-1254A.pdf

Here is the data sheet on the LCD controller
http://www.necel.com/nesdis/image/S14308EJ6V1DS00.pdf

I bought a few of these too.

This LCD is much like a shift register.
So I think we need 6 digital  plus the 5volts and Ground.

Reset
Serial In
Busy
Chip Select
Serial Clock
C/D Command Or data line.

Here is the LCD attached to an ATtiny24
http://www.pongrance.com/ddmanual.pdf

I think if we used something Like this shift register system  We should be able to get this LCD to work.
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1212882269;start=all

will post more when I figure this out



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