I have 2 Raspberry Zero W and a Papirus hat 2". Both Raspis are showing the following Error:
> Traceback (most recent call last):
> File "/home/pi/Desktop/DemoPapirus.py", line 3, in <module>
> text = PapirusText()
> File "/usr/local/lib/python2.7/dist-packages/papirus/text.py", line 14, in __init__
> self.papirus = Papirus(rotation = rotation)
> File "/usr/local/lib/python2.7/dist-packages/papirus/epd.py", line 58, in __init__
> self._lm75b = LM75B()
> File "/usr/local/lib/python2.7/dist-packages/papirus/lm75b.py", line 22, in __init__
> self._bus.write_byte_data(self._address, LM75B_CONF_REGISTER, LM75B_CONF_NORMAL)
> IOError: [Errno 121] Remote I/O error
when trying to show something on the display. One Raspi is soldiered the other one has hammer headers. I even tried to reinstall the raspian (apt-get update and upgrade is made). The same SD card with the same papirus hat works on a Raspberry Pi 3 without errors so the hat and the raspian seem to be OK.
Any suggestions what could be wrong?