The word cannot display correctly

The Dot Matrix Display (DMD) is a 32x16 array of high-brightness LEDs for visually striking effects. [Product Page]
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naziroh
Posts: 5
Joined: Wed Aug 01, 2018 6:55 am

The word cannot display correctly

Post by naziroh » Wed Aug 01, 2018 7:16 am

My problem is, the entire panel is lit and the pattern led are not lit. Are this problem regarding the coding or the hardware (DMD display)?
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IMG-20180719-WA0005 (2).jpg
IMG-20180719-WA0005 (2).jpg

Brissieboy
Posts: 133
Joined: Fri Sep 20, 2013 7:25 am

Re: The word cannot display correctly

Post by Brissieboy » Wed Aug 01, 2018 10:30 am

Well it could be either, or even something else. We have no way of telling without more details - such as seeing your code - are you using a Uno or something else? - hardware/wiring configuration.
Have you tried the sample sketches supplied with the libraries? If they work, then it is a problem with your sketch.
Are you powering the DMD from a solid 5V supply or from the USB port? See this this thread.

naziroh
Posts: 5
Joined: Wed Aug 01, 2018 6:55 am

Re: The word cannot display correctly

Post by naziroh » Thu Aug 02, 2018 3:04 am

I had used arduino uno and also tried the sample sketches supplied with the library. The result is the dmd was working but the pattern of led are not lit as usual. I had power the dmd using usb port only without 5v supply.
Attachments
WhatsApp Image 2018-08-02 at 11.20.25 AM (1).jpeg
WhatsApp Image 2018-08-02 at 11.20.24 AM.jpeg
WhatsApp Image 2018-08-02 at 11.20.23 AM (1).jpeg

naziroh
Posts: 5
Joined: Wed Aug 01, 2018 6:55 am

Re: The word cannot display correctly

Post by naziroh » Thu Aug 02, 2018 3:49 am

this is the picture of my project
Attachments
WhatsApp Image 2018-08-02 at 11.44.13 AM.jpeg
WhatsApp Image 2018-08-02 at 11.20.28 AM.jpeg

naziroh
Posts: 5
Joined: Wed Aug 01, 2018 6:55 am

Re: The word cannot display correctly

Post by naziroh » Thu Aug 02, 2018 3:51 am

The wire connection to breadboard is connect to the ground of arduino.

Brissieboy
Posts: 133
Joined: Fri Sep 20, 2013 7:25 am

Re: The word cannot display correctly

Post by Brissieboy » Thu Aug 02, 2018 6:18 am

I had used arduino uno and also tried the sample sketches supplied with the library. The result is the dmd was working but the pattern of led are not lit as usual.
This indicates that something is probably wrong with your setup rather than your code.
I had power the dmd using usb port only without 5v supply.
I would strongly suggest that you power your DMD from a separate 5V supply capable of AT LEAST 2 Amps. USB power is not sufficient to power a DMD and may be the cause of your problem. Read the thread in my earlier response.

naziroh
Posts: 5
Joined: Wed Aug 01, 2018 6:55 am

Re: The word cannot display correctly

Post by naziroh » Thu Aug 02, 2018 7:18 am

Thanks for your suggestion. I will try it later.

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