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pimoroni / rgbmatrix5x5-python

Python library for the Pimoroni 5x5 RGB Matrix Breakout
https://shop.pimoroni.com/products/5x5-rgb-matrix-breakout
MIT License
12 stars 5 forks source link

IOError: [Errno 121] Remote I/O error #17

Closed rzr closed 3 years ago

rzr commented 3 years ago

Hi,

I am testing this i2c module: https://shop.pimoroni.com/products/5x5-rgb-matrix-breakout#show-reviews

on "Raspbian GNU/Linux 10 (buster)" and observing this issue:

curl https://get.pimoroni.com/rgbmatrix5x5 | bash

pi@raspberrypi:~/Pimoroni/rgbmatrix5x5/examples $ ./blinkyspot.py 
Traceback (most recent call last):
  File "./blinkyspot.py", line 53, in <module>
    rgbmatrix5x5.show()
  File "/usr/local/lib/python2.7/dist-packages/rgbmatrix5x5/is31fl3731.py", line 283, in show
    self.setup()
  File "/usr/local/lib/python2.7/dist-packages/rgbmatrix5x5/is31fl3731.py", line 105, in setup
    raise e
IOError: [Errno 121] Remote I/O error

i2cdetect -l
# i2c-1   i2c             bcm2835 (i2c@7e804000)                  I2C adapter

i2cdetect -y 1
# 70: -- -- -- -- 74 -- -- --      

cat /proc/device-tree/model 
# Raspberry Pi 4 Model B Rev 1.4

Can you please help to troubleshot this ?

Gadgetoid commented 3 years ago

Could be a wiring/connection issue. How’s it wired up?

rzr commented 3 years ago

yes ground was flaky thx