Interface PCF8591 with Raspberry Pi 4, ADC/DAC Analog Digital Converter Module with Raspberry Pi 4, PCF8591 with RPi4 Rpi4 with PCF8591, RPi4 PCF8591, PCF8591 RPi4, RPI4 ADC, Rpi4 DAC Welcome back to another Python tutorial for the Raspberry Pi 4! The previous tutorial showed us how to construct a Raspberry Pi-powered cell phone with a microphone and speaker for making and receiving calls and reading text messages (SMS). To make our Raspberry Pi 4 into a fully functional smartpho ....