Led matrix with rtc hat on rp3 glitch

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Mac_840
 
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Led matrix with rtc hat on rp3 glitch

Post by Mac_840 »

[img]20170819_121849.jpg[/img]
Hello
Unable to get demos to work on matrix, typically have horizontal lines or vertical lines. Occasionally a few green boxes.
New rp3 b with rasiban adafruit matrix hat with rtc
32x32 matrix
All code is exactly as shown by adafruit.
Have also tried -w 1 to 8 with no difference.
Thanks

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adafruit_support_mike
 
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Re: Led matrix with rtc hat on rp3 glitch

Post by adafruit_support_mike »

The photo you tried to post apparently didn't come through. Could you post that again please?

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Re: Led matrix with rtc hat on rp3 glitch

Post by Mac_840 »

Update
The matrix will not turn on anymore.
Watch "Led matrix not working" on YouTube
https://youtu.be/7zVjv2M05VQ
Faulty matrix?
Faulty hat?

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Re: Led matrix with rtc hat on rp3 glitch

Post by adafruit_support_mike »

Post a photo showing the connections between the RasPi and the matrix please. 800x600 images usually work best.

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Re: Led matrix with rtc hat on rp3 glitch

Post by Mac_840 »

Connections
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Re: Led matrix with rtc hat on rp3 glitch

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Hat on pi
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Re: Led matrix with rtc hat on rp3 glitch

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Before it quit doing anything this is what I saw
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Re: Led matrix with rtc hat on rp3 glitch

Post by Mac_840 »

I am worried that I may have harmed the hat during soldering , there was a few pins that got hot, besides that my other concern is that the first time I turned it on I did not have power to the hat, only power to the matrix and pi. I still had a few squares lite up. Afterwards I realized that I needed to power the hat and send that power to the pi, separate power to matrix. I have a 2.5 a supply to matrix and a 2.1a supply to hat and pi.
Thanks

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Re: Led matrix with rtc hat on rp3 glitch

Post by adafruit_support_mike »

To make sure I understand you, does the matrix work the way it should when you use separate power supplies for the matrix and the RasPi?

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Re: Led matrix with rtc hat on rp3 glitch

Post by Mac_840 »

The matrix does not work either way

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Re: Led matrix with rtc hat on rp3 glitch

Post by adafruit_support_mike »

Thank you.

One more question: are you using an OS image that you downloaded in the last week?

The RasPi Foundation just changed the base OS from Linux Jessie to Linux Stretch, and version upgrades like that often break existing software. In the past two or three days, several people have found that the LED Matrix code doesn't work under Stretch.

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Re: Led matrix with rtc hat on rp3 glitch

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Os and version
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Re: Led matrix with rtc hat on rp3 glitch

Post by adafruit_support_mike »

Okay, we can rule out the version issue.

Do you happen to have another RasPi you can use for comparison? The LED matrix seems to work in general, and soldering isn't likely to have hurt any of the chips on the Hat, but there's a chance that something could have happened to the RasPi's GPIO pins when the matrix was getting power from the RasPi.

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Re: Led matrix with rtc hat on rp3 glitch

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No I don't have another pi, I'll buy one and try, should I buy another hat, just to be sure the hat isn't what ruined the pins?

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Re: Led matrix with rtc hat on rp3 glitch

Post by Mac_840 »

Bought new rpi3 and new etc hat.
SAME ISSUE!

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