From Terminal, you can open the current directory in the File Manager using the xdg-open command. This is similar to the Mac open command.
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$ xdg-open .
See If the PWM Board Is Working
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i2cdetect -l
This should return
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i2c-1i2cbcm2835(i2c@7e804000)I2Cadapter
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i2cdetect -y 1
123456789
0 1 2 3 4 5 6 7 8 9 a b c d e f00: --------------------------10: --------------------------------20: --------------------------------30: --------------------------------40: 40 ------------------------------50: --------------------------------60: --------------------------------70: 70 --------------
Note that the line 40 and 70 has values under column 0 (I2C bus 1)
If you unplug the data you should get:
123456789
0 1 2 3 4 5 6 7 8 9 a b c d e f00: --------------------------10: --------------------------------20: --------------------------------30: --------------------------------40: --------------------------------50: --------------------------------60: --------------------------------70: ----------------