Arduino Physical CPU/Memory Gauges

cpu_serial_servo.py

#!/usr/bin/env python
import serial, sys, time, psutil

# Assign Arduino's serial port address
#   Windows example
#     usbport = 'COM3'
#   Linux example
#     usbport = '/dev/ttyUSB0'
#   MacOSX example
#     usbport = '/dev/tty.usbserial-FTALLOK2'
usbport = '/dev/ttyUSB0'

# Set up serial baud rate
ser = serial.Serial(usbport, 9600, timeout=1)

def move(servo, angle):
    '''Moves the specified servo to the supplied angle.

    Arguments:
        servo
          the servo number to command, an integer from 1-4
        angle
          the desired servo angle, an integer from 0 to 180

    (e.g.) >>> servo.move(2, 90)
           ... # "move servo #2 to 90 degrees"'''

    if (0 <= angle <= 180):
        ser.write(chr(255))
        ser.write(chr(servo))
        ser.write(chr(angle))
    else:
        print "Servo angle must be an integer between 0 and 180.\n"
        
        
def main():
	while 1:
		cpu_percent = psutil.cpu_percent(interval=1, percpu=False)
		mem_percent = psutil.phymem_usage().percent

		cpu_angle = int(cpu_percent / 100 * 180)
		mem_angle = int(mem_percent / 100 * 180)
		
		cpu_str = "CPU: " + str(cpu_percent) + " % (" + str(cpu_angle) + "/180)"
		mem_str = "Mem: " + str(mem_percent) + " % (" + str(mem_angle) + "/180)"
		
		print cpu_str
		print mem_str
		
		move(0, cpu_angle)
		move(1, mem_angle)
		#time.sleep(1)

if __name__ == "__main__":
    sys.exit(main())