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LCD DISPLAY GARBAGE

pingnagan

LCD DISPLAY GARBAGE
April 18, 2015 02:57PM

Registered: 10 years ago
Posts: 43

Fellow Reprappers,

Im having issue with my LCD - Reprap Discount Smart Controller, displying garbage and after a single click comes back , this happens every now and then.

Is there a way to fix this permanently.

Attached pic for reference.

Any help shall be much appreciated.

Regards,

Pingnagan P

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Attachments:
open | download - LCD_ERR.jpg (84.6 KB)

the_digital_dentist

Re: LCD DISPLAY GARBAGE
April 18, 2015 03:10PM

Registered: 11 years ago
Posts: 5,780

I've seen this caused by static discharge. Try grounding the frame of the printer, and try to touch the grounded frame before adjusting anything with the encoder.

It could be a cable problem- try swapping the two cables to see if the problem remains, changes, or goes away.

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pingnagan

Re: LCD DISPLAY GARBAGE
April 18, 2015 03:12PM

Registered: 10 years ago
Posts: 43

It makes sense, Let me try and update on Grounding the Printer.

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vreihen

Re: LCD DISPLAY GARBAGE
April 18, 2015 06:59PM

Registered: 10 years ago
Posts: 903

It also has happened in the past when someone extends the cables beyond their original length. My 12864 graphical LCD throws garbage at times because the on-board 5V power supply from the Azteeg X5 Mini is a little bit weak, and I have to run it from USB power to have the GLCD work reliably.....

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the_digital_dentist

Re: LCD DISPLAY GARBAGE
April 18, 2015 10:59PM

Registered: 11 years ago
Posts: 5,780

Those display modules use SPI to communicate with the controller board and long cables cause them to lose sync. I think the cables should be kept under 300mm.