Elecrow Raspberry Pi & Arduino Starter Kit User Manual page 67

Connection
PCF8591 Raspberry Pi
VCC 5V
GND GND
SDA SDA1
SCL SCL1
Code Overview, Compile and run
The code is quite simple and we won't be changing it for the next couple of lessons, the same code can apply when
using the components as well.
Using the smbus library we connect to the port A0 address which we will be using in the next few lessons, then we
get the value and print it out, pretty straight forward. When no components are used the value won't change much
but when the components will be attached the value will changed based on the component.
Compile the script by going into the samples directory and running: python3 pcf8591.py
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