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DLight Unit is a Digital Ambient Light Sensor. Adopts BH1750FVI sensor (I2C interface), integrates 16-bit ADC, supports wide-range LUX and high resolution (1 - 65535 LX). Compact in size, and low power consumption. Suitable for various light sensing applications.
- Support light source variations (incandescent, fluorescent, halogen, white LED, sunlight, etc)
- Wide Range LUX (1-65535 lux)
The library must be copied on the MicroPython board before using the examples.
On a WiFi capable plateform:
>>> import mip
>>> mip.install("github:mchobby/esp8266-upy/m5stack-u136")
Or via the mpremote utility :
mpremote mip install github:mchobby/esp8266-upy/m5stack-u136
The sensor can be powered with 3.3V or 5V power supply.
The SDA / SCL data lines are at 3.3V level.
The dlight.py library must be copied on your MicroPython microcontroler.
The test.py script do reads the sensor value every 100ms.
from machine import I2C
from dlight import *
from time import sleep
# Pico - I2C(1) - sda=GP6, scl=GP7
i2c = I2C(1)
# M5Stack core
# i2c = I2C( sda=Pin(21), scl=Pin(22) )
ambiant = AmbiantLight(i2c)
# Set the mode
ambiant.set_mode( CONTINUOUSLY_H_RESOLUTION_MODE )
while True:
print( 'Light: %i Lux' % ambiant.lux )
sleep( 0.200 )Please note that the mode can have the following values:
- CONTINUOUSLY_H_RESOLUTION_MODE
- CONTINUOUSLY_H_RESOLUTION_MODE
- CONTINUOUSLY_H_RESOLUTION_MODE2
- CONTINUOUSLY_L_RESOLUTION_MODE
- ONE_TIME_H_RESOLUTION_MODE
- ONE_TIME_H_RESOLUTION_MODE2
- ONE_TIME_L_RESOLUTION_MODE
Constant and behavior described in the BH1750FVI datasheet (see detail of the product).