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"garbage" in RepRapDiscount Smart Controller + Re-ARM

Posted by necris38

necris38

"garbage" in RepRapDiscount Smart Controller + Re-ARM
February 05, 2019 07:20AM

Registered: 4 years ago
Posts: 7

Hi !

I try to put Marlin 2.0 on my Re-arm+RAMPS1.6 board with a RepRapDiscount Smart Controller.
I attached this as described here:
[panucattdevices.freshdesk.com]
And I get that ...

IMG_5012.JPG

All pins were checked twice, I don't know how to fix this...

Any Idea ?

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Attachments:
open | download - configuration.h (74.6 KB)

Dust

Re: "garbage" in RepRapDiscount Smart Controller + Re-ARM
February 05, 2019 07:51PM

Admin
Registered: 12 years ago
Posts: 6,794

Most probable case is electrical interference.
Make sure the LCD cables are well away from any high voltage cables (heaters, stepper drivers, power)
preferable also use shielded cables.

failing that, add the following to your configuration.h

#define ST7920_DELAY_1 DELAY_NS(125)
#define ST7920_DELAY_2 DELAY_NS(125)
#define ST7920_DELAY_3 DELAY_NS(125)

and increase the delays till it works...

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necris38

Re: "garbage" in RepRapDiscount Smart Controller + Re-ARM
February 06, 2019 01:07PM

Registered: 4 years ago
Posts: 7

I try several value but the issue is the same.
I don't think it's electrical interference issue cause only the board+screen are powered on my desk.
Some says It's a SPI problem...

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Dust

Re: "garbage" in RepRapDiscount Smart Controller + Re-ARM
February 07, 2019 06:47AM

Admin
Registered: 12 years ago
Posts: 6,794

Looking through the marlin 2.0 code for a LPC1768 chip (ie used in smoothie and rearm)

it suggests

#define ST7920_DELAY_1 DELAY_NS(600)
#define ST7920_DELAY_2 DELAY_NS(750)
#define ST7920_DELAY_3 DELAY_NS(750)

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necris38

Re: "garbage" in RepRapDiscount Smart Controller + Re-ARM
February 07, 2019 05:57PM

Registered: 4 years ago
Posts: 7

Yes I've seen this too but...no way :-(
I have tested it on my A8 board: is fully functionnal...
I'm so upset for now :-(

51902547_2184294481635260_8104903110628999168_n.jpg

Edited 2 time(s). Last edit at 02/07/2019 05:59PM by necris38.

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necris38

Re: "garbage" in RepRapDiscount Smart Controller + Re-ARM
February 09, 2019 11:29AM

Registered: 4 years ago
Posts: 7

After a week of hard trying, configuration and other crying, I finally resolder all pins on Re-arm and Ramps plus Re-arm CPU with a hot-gun and then...perfect !
Thanks a lot for your help !

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sinned

Re: "garbage" in RepRapDiscount Smart Controller + Re-ARM
February 27, 2019 12:16AM

Registered: 5 years ago
Posts: 110

Can you clarify what you mean by re-soldered?

Which ones do you think were the culprit?

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Power3DPrinting

Re: "garbage" in RepRapDiscount Smart Controller + Re-ARM
August 25, 2020 12:58PM

Registered: 5 years ago
Posts: 58

Quote
necris38
After a week of hard trying, configuration and other crying, I finally resolder all pins on Re-arm and Ramps plus Re-arm CPU with a hot-gun and then...perfect !
Thanks a lot for your help !

I ran into the same problem and I am confused why there are pictures of a full graphic display and not the discount smart controller from the title. What connections did you need for the controller to work? I followed chris's basement's guide and I cannot get the SD card reader to work. [www.youtube.com]