Python AttributeError: ‘module’ object has no attribute ‘Serial’

I’m trying to access a serial port with Python 2.6 on my Raspberry Pi running Debian. My script named serial.py tries to import pySerial: import serial ser = serial.Serial('/dev/ttyAMA0', 9600) ser.write("hello world!") For some reason it refuses to establish the serial connection with this error: AttributeError: 'module' object has no attribute 'Serial' When I try … Read more

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.