I have a
Raspberry, Pi 3 modello B+ bought on amazon and your piromoni o-tron HAT.
Display works well for many days receiving data from my custom python program. Suddenly stops showing any messages and backlight does’t work anymore with none reason. If a run a demo compare this message:
pi@raspberrypi:~/Pimoroni/displayotron/examples/dot3k/advanced $ sudo python backlight.py
Traceback (most recent call last):
File “backlight.py”, line 5, in <module>
import dot3k.backlight as backlight
File “/usr/local/lib/python2.7/dist-packages/dot3k/backlight.py”, line 1, in <module>
import sn3218, colorsys, math
File “/usr/lib/python2.7/dist-packages/sn3218.py”, line 114, in <module>
File “/usr/lib/python2.7/dist-packages/sn3218.py”, line 62, in enable_leds
[enable_mask & 0x3F, (enable_mask >> 6) & 0x3F, (enable_mask >> 12) & 0X3F])
IOError: [Errno 121] Remote I/O error
I have tried to install again os and piromoni libraries as showed in your instructions and upgrade os, but nothing was solved !!
My version of raspberry is :
RASPBIAN STRETCH WITH DESKTOP
Version: June 2018
Release date: 2018-06-27
Kernel version: 4.14
with command uname -a I obtain this string of Kernel version:
Linux raspberrypi 4.14.52-v7+ #1123 SMP Wed Jun 27 17:35:49 BST 2018 armv7l GNU/Linux
My question is I have a defected Raspberry ? or is your display O-tron HAT defected ? or either damaged ?
Help me please, because if either rpi or o-tron have been damage for any reason i tried to give back both to amazon.
Thanks in advance