Design with GY-30 BH1750FVI Digital Light Intensity Illumination Sensor in Cirkit DesignerThe GY-30 BH1750FVI is a digital ambient light sensor that provides an accurate measurement of illumination intensity through an I2C interface. This sensor is widely used in applications where light levels need to be measured, such as in smartphones, lighting control systems, and digital cameras to adjust brightness.
This circuit uses an Arduino Nano to interface with an NRF24L01 wireless module and a GY-30 BH1750FVI light intensity sensor. The Arduino is powered by a 9V battery and communicates with the NRF24L01 via SPI and the light sensor via I2C, enabling wireless transmission of light intensity data.
Open Project in Cirkit Designer
This circuit features an Arduino UNO microcontroller connected to a BH1750 light intensity sensor and a 20x4 LCD display, both interfaced via I2C communication. The Arduino is programmed to read the ambient light level from the BH1750 sensor and display the readings in lux on the LCD. The circuit is designed for monitoring and displaying real-time light intensity data.
Open Project in Cirkit Designer
This circuit is designed to collect environmental data using an ESP-8266 microcontroller connected to a BMP180 barometric pressure sensor, a GY-30 BH1750FVI digital light intensity sensor, and a DHT11 temperature and humidity sensor. The sensors are interfaced with the ESP-8266 via I2C (SCL and SDA lines) and digital IO pins, and they share a common power supply (3.3V) and ground. The circuit is likely intended for weather monitoring or home automation applications, with capabilities to measure temperature, humidity, barometric pressure, and light intensity.
Open Project in Cirkit Designer
This circuit uses an Arduino UNO to interface with a BH1750 light sensor via I2C communication. The Arduino reads light intensity data from the BH1750 sensor, which is powered by the Arduino's 3.3V and GND pins.
Open Project in Cirkit Designer| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | VCC | Power supply (2.4V to 3.6V) |
| 2 | GND | Ground |
| 3 | SCL | Serial Clock Line for I2C communication |
| 4 | SDA | Serial Data Line for I2C communication |
| 5 | ADDR | Address pin (floating, VCC or GND) |
0x23, or VCC for address 0x5C.#include <Wire.h>
#include <BH1750.h>
BH1750 lightMeter;
void setup() {
Wire.begin();
Serial.begin(9600);
lightMeter.begin(BH1750::CONTINUOUS_HIGH_RES_MODE);
Serial.println(F("BH1750 Test"));
}
void loop() {
float lux = lightMeter.readLightLevel();
Serial.print("Light: ");
Serial.print(lux);
Serial.println(" lx");
delay(1000);
}
Q: Can the sensor be used with 5V systems? A: While the sensor operates at 2.4V to 3.6V, a level shifter is recommended for use with 5V systems.
Q: How can I change the I2C address of the sensor? A: The I2C address can be changed by connecting the ADDR pin to GND or VCC.
Q: Is it necessary to calibrate the sensor? A: The sensor comes pre-calibrated, but for precise applications, you may need to calibrate against a known light source.
Q: What is the maximum I2C speed supported by the sensor? A: The sensor supports I2C fast-mode, which can go up to 400 kHz.
Remember to always consult the sensor's datasheet for the most accurate and detailed information.