X728 and Rpi4 - IOError: [Errno 121] Remote I/O error | Geekworm

X728 and Rpi4 - IOError: [Errno 121] Remote I/O error

MJ

Mikal Jenssen
12/12/20, 3:39 AM
Hi

Running:
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"

Fresh hardware install, following GUIDE from https://raspberrypiwiki.com/X728-Software

Jumpers: PLD

Step: 6 outputs:
```
pi@raspberrypi:~ $ sudo python x728bat.py
******************
Traceback (most recent call last):
  File "x728bat.py", line 31, in <module>
    print "Voltage:%5.2fV" % readVoltage(bus)
  File "x728bat.py", line 11, in readVoltage
    read = bus.read_word_data(address, 2)
IOError: [Errno 121] Remote I/O error
```
Why?

EDIT: On first post i used a Rpi4B
On the same OS, on a Rpi3 it works!

So, how to make it work on the Rpi 4 then ?
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MJ

Mikal Jenssen
12/22/20, 8:20 PM

@li xia

Yes, as i mentioned in first post. I followed the guide on two Rpi4s.

Only the Rpi3 worked.

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