0

RGB matrix stopped working
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

RGB matrix stopped working

by karlwachs on Sun Nov 05, 2017 11:23 pm

My 64x32 matrix worked fine with MATRIXHAT-RPI and yesterday it stopped working. Checked all the voltages, ok, no errors. Ran the example python programs: no errors, re imaged SSD, reinstalled the adafruit libs: no joy. ...

Bought this Oct last year.
1 x 5V 10A switching power supply[ID:658]
1 x 64x32 RGB LED Matrix - 3mm pitch[ID:2279]
1 x Adafruit RGB Matrix HAT + RTC for Raspberry Pi - Mini Kit[ID:2345]


tried this example pgm:
Code: Select all | TOGGLE FULL SIZE
import time
from rgbmatrix import Adafruit_RGBmatrix

# Rows and chain length are both required parameters:
matrix = Adafruit_RGBmatrix(32, 1)

# Flash screen red, green, blue (packed color values)
matrix.Fill(0xFF0000)
time.sleep(1.0)
matrix.Fill(0x00FF00)
time.sleep(1.0)
matrix.Fill(0x0000FF)
time.sleep(1.0)

# Show RGB test pattern (separate R, G, B color values)
for b in range(16):
        for g in range(8):
                for r in range(8):
                        matrix.SetPixel(
                          (b / 4) * 8 + g,
                          (b & 3) * 8 + r,
                          (r * 0b001001001) / 2,
                          (g * 0b001001001) / 2,
                           b * 0b00010001)

time.sleep(10.0)
matrix.Clear()
prints:
Result: 0xCF33070 v 0xCF33070
which it should. no errors.


Any other suggestion?
KW

karlwachs
 
Posts: 14
Joined: Thu Jan 14, 2016 7:42 pm

Re: RGB matrix stopped working

by adafruit_support_mike on Mon Nov 13, 2017 5:59 am

Sorry for the delay.

From your description, it sounds like a hardware failure somewhere in the signal path. As a starting point, do you have another RasPi you could use for a comparison test?

adafruit_support_mike
 
Posts: 45167
Joined: Thu Feb 11, 2010 2:51 pm

Please be positive and constructive with your questions and comments.