BH1750

Kaluma library for BH1750 light sensor

Install

npm install https://github.com/rossdoker/bh1750

Wiring

Pi Pico	BH1750
VBUS	VCC
GND	GND
SCL	SCL
SDA	SDA

Usage

const { I2C } = require('i2c');
const BH1750 = require('bh1750')

const bus = new I2C(1, { mode: I2C.MASTER });
const bh1750 = new BH1750(bus);
bh1750.setContinuousMode(BH1750.CONTINUOUS_HIGH_RES_MODE_1);
setInterval(() => {
  console.log(bh1750.getResult());
}, 1000);

API

Class

A class for bh1750 sensor communicating with I2C interface.

new BH1750(bus, address)

Create an instance of bh1750 sensor.

• bus <I2C> An instance of I2C to communicate.
• address <number> I2C slave address. (7bit). Default: 0x23.

bh1750.powerDown()

Turns off the bh1750 sensor.

bh1750.powerOn()

Turns on the bh1750 sensor.

bh1750.reset()

Resets the bh1750 sensor.

bh1750.setContinuousMode(mode)

Sets bh1750 to work in continuous measurement mode.

• mode <string> Continuous measurement mode. Use one of next: BH1750.CONTINUOUS_LOW_RES_MODE, BH1750.CONTINUOUS_HIGH_RES_MODE_1, BH1750.CONTINUOUS_HIGH_RES_MODE_2.

bh1750.setOneTimeMode(mode)

Sets bh1750 to work in one time measurement mode.

• mode <string> One time measurement mode. Use one of next: BH1750.ONE_TIME_LOW_RES_MODE, BH1750.ONE_TIME_HIGH_RES_MODE_1, BH1750.ONE_TIME_HIGH_RES_MODE_2.

bh1750.setSensitivity(v)

Sets sensitivity of measurement.

• v <number>Min: 31. Max: 254. Default: 69.

bh1750.getResult()

Returns result of measurement.

• Returns <number> Result of measurement in lx.

bh1750.oneTimeMeasurement(mode, additionalTime)

Sets bh1750 to work in one time measurement mode and returns result of measurement.

• mode <string> One time measurement mode. Use one of next: BH1750.ONE_TIME_LOW_RES_MODE, BH1750.ONE_TIME_HIGH_RES_MODE_1, BH1750.ONE_TIME_HIGH_RES_MODE_2.
• additionalTime <number> Additional time in millisecond to wait before read the result of measurement. Default: 0.