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OSError: [Errno 121] Remote I/O error

2347 Views - Created 08/09/2022


Posted by:

kiranmai1268 Avatar

Hello there,

I am approaching you regarding the I2C connectivity between RPI4 and pico

when I am trying to run the code in RPI4 an error raised:

Traceback (most recent call last):  File "/home/pi/Desktop/", line 5, in <module>    bus.write_byte(0x41,12)  OSError: [Errno 121] Remote I/O errorand this is the code I used in RPi import smbus#import timebus=smbus.SMBus(1)#time.sleep(1)bus.write_byte(0x41,12)bus.write_byte(0x41,15)I got another code in pico as well.

It would be so great if anyone help me with that.



Posted by:

andrew Avatar

United Kingdom

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I do not have much experience using I2C on the pico. It may be worth posting your message on the official raspberry pi forum at

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