PCF8591 with Raspberry Pi-In this article we deal with the PCF8591 ready-made board (see Figure 1): This is a printed circuit board with the A / D and D / A converters in the middle PCF8591 is installed. The practical thing is that there are already some sensors and free assignable analog inputs and outputs are located on it. This will get you in one Board:

• a photo resistor
• a temperature-dependent resistor
• a potentiometer
• one free analog input and one analog output