sharp_dust.py

# script for running sharp GP2Y1010AU using micropython ESP32 controller

import machine, time

ao = machine.ADC(machine.Pin(36)) # analog read
led = machine.Pin(39) # this is not working
#led = machine.Pin(15, machine.Pin.OUT)

#mg/m3 but want ug/m3
def get_dust():
    while True:
        # multiple lines in one as still using minicom to test code
        on = led.IN; time.sleep_us(280); meas = ao.read(); time.sleep_us(40); off = led.OUT; time.sleep_us(9680);
        voltage = meas * (5.0 / 2**12); density = 0.172 * voltage - 0.0999; print('meas: %s; dens: %s; volt: %s' % (meas, density, voltage)); time.sleep(1)