PiZero W connected to two peripherals (GPIO and USB): how to continuously read from both at same time?
I have a raspberry pizero W that is connected via GPIO pins to a flowmeter and USB to a barcode scanner. I have python script that uses a callback function to be alerted when the GPIO input is sensed. This python script needs to be continuously running on the pizero in order to recognize when the flowmeter is activated and process the input.