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BH1750 ambient light sensor~

This feature is included only in tasmota32 and tasmota-sensors binaries

When compiling your build add the following to user_config_override.h: 

#ifndef USE_BH1750
#define USE_BH1750      // [I2cDriver11] Enable BH1750 sensor (I2C address 0x23 or 0x5C) (+0k5 code)
#endif

The BH1750 is a digital ambient light sensor module which uses I2C to communicate. The BH1750 provides you with a digital value in lux (Lx) over a range of 1 - 65535 lx. See datasheet for more information.

Configuration~

Wiring~

BH1750 ESP
GND GND
VCC 3.3V
SDA GPIOx
SCL GPIOy

Tasmota Settings~

In the Configuration -> Configure Module page assign:

  1. GPIOx to I2C SDA
  2. GPIOy to I2C SCL

After a reboot the driver will detect BH1750 automatically and display Illuminance.

image

Sensor sends a tele/%topic%/SENSOR JSON reponse:

{"Time":"2019-11-03T20:45:37","BH1750":{"Illuminance":79}}

Commands~

Command Parameters
Bh1750Resolution resolution mode. x = sensor number (1..2)
0..2 = choose sensor resolution (0 = high (default), 1 = high2, 2 = low)
Bh1750MTime Measurement Time value. x = sensor number (1..2)
31..254 = set measurement time (default = 69)

Breakout Boards~