Crashing LCD

[Jerson]

Ok, I understand. I hope to know for sure once the boards are on the field in real-life conditions. Thanks for the tip. I appreciate it.

[Acetronics2]

Hi, George and Jerson

Heard of something similar on a modelling forum ...

http://www.rcgroups.com/forums/showp...5&postcount=80

Alain

[Ioannis]

Jerson: No problem. That's why we are here after all.

Alain: They usually put a black tape on these COG lcds obviously for this reason. Electronics are sensitive to light energy.

By the way, I am looking for such COG LCDs either 2x8 or 2x16 prefferably with backlight. Do you have any sources for such devices? Cheap I mean...

Ioannis

[George]

Thanks for the input so far, unfortunately the Bezel is ali, have put solder on all the pads under the bezel tabs, soldered a separate earth cable then pulled the tabs onto the solidified solder so they scraped the solder and in theory should make good contact. Still no luck tho the LCD does the same. I'm guessing its more the power coming down the line than radiated power, I'll try chuck some ferrite beads on n see what happens.

[Jerson]

George, actually a small handphone video of the problem will go a long way in understanding your problem.
Ioannis : Don't know if this will help you, I got some COG graphic lcds from them pretty cheap and easy to use except the connector is very fine pitch. You need to be good at soldering fine pitch smds.
http://www.aliexpress.com/product-gs...olesalers.html

[Ioannis]

Thanks Jerson for the link.

Ioannis

[George]

Finally think I have it resolved, I tried a lot of things, ferrite beads, rf inductors, ceramic caps and all failed. The thing that seems to work is I got 5m of sheilded cable and ran the signal through that, appears like the combined inductance and capacitance of the sheild soaks it up. Bit rough - but it seems to work for now!