Adafruit PiOLED 128x32 Monochrome OLED - Could not open file i2c-1

@bradm wrote:

Hi guys,

I’m getting an error when trying to use the Adafruit PiOLED 128x32 Monochrome OLED. I’ve set everything up as per the instructions here and enabled I2C. I’m getting the following error when running i2cdetect -y 1:

Error: Could not open file/dev/i2c-1’ or /dev/i2c/1': No such file or directory

When I run ls /dev/i2c*, I get the following:

/dev/i2c-3

I can run i2cdetect -y 3 but this doesn’t work with the PiOLED and I get the following output (despite the hat being attached to my Pi Zero W).

 0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --   

Any help would be greatly appreciated!

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