Light Spectrum Sensor Arduino

For today s tutorial we ll be using the grove light sensor v1 2 module and an led bar to build a simple circuit that changes based on light.

Light spectrum sensor arduino.

The arduino sketch is also similarly simple. It is most suited for arduino open source development boards. With this range you can also examine very dark light sources. An array stores all the needed pwm values to deliver the range of visible light from red to blue.

This module is based on the i2c light to digital converter tsl2561 to transform light intensity to a digital signal. The analog input pin converts the voltage between 0v and vcc into integer values between 0 and 1023 called adc value or analog value. How to use a light sensor with arduino. So you finally get a spectrum with 128 3 384 pixels.

The data is output in a csv compatible form for capture in either a terminal program to import into excel or simply cut and pasted directly into excel from the arduino serial monitor screen. We ve gone through the theoretical side of light sensors and now its time for our light sensor arduino tutorial. If bias increases than 3 3v it may hurt the sensor. With the 10kohm potentiometer you can change the integration time between 0 and 256 ms.

The sens 43uv analog ultraviolet light sensor module is typical of uv sensor modules. Some of the common frequencies are infrared visible and ultraviolet. Grove digital light sensor. Isl29125 sensor breakout board from sparkfun it contains few pins for biasing and communication.

The intensities of the pixels within the sensor values are interpolated with a straight line linear interpolation. Arduino light sensor. By connecting a pin of the photoresistor to an analog input pin we can read the analog value from the pin and then we can know the light levels relatively. The device is sensitive in the 200 370 nm range which cover most of the uva and uvb spectrum.

Otherwise you can interface with any controllers having i2c lines. Arduino s pin a0 to a5 can work as the analog input. Compared to low cost cds cells this sensor is more precise allowing for exact lux calculations and can be configured for different gain timing. Rgb light sensor isl29125 breakout board.

Adafruit industries unique fun diy electronics and kits adafruit tsl2561 digital luminosity lux light sensor breakout id. A buzzer is connected to pin 11 of arduino. Infrared and full spectrum. Here s what you need.

Different from traditional analog light sensor as grove light sensor this digital module features a selectable light spectrum range due to its dual light sensitive diodes. It produces an analog output proportional to the amount of uv light it receives. Working of arduino light sensor.