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You can use the preceding links or go directly to /tools to find all the parts for your projects at the best price!

Arduino UNO – read Best Arduino Starter Kits.

Here’s the parts required for this project: This sensor is not very accurate, but works fine for detecting colors in simple projects. In this example you’re going to detect colors with the Arduino and the TCSP3200 color sensor. So, you set the S0 pin to HIGH and the S1 pin to LOW.

Take a look at the table below: Output frequency scalingįor the Arduino, it is common to use a frequency scaling of 20%. Scaling the output frequency is useful to optimize the sensor readings for various frequency counters or microcontrollers. It can be scaled to the following preset values: 100%, 20% or 2%. Pins S0 and S1 are used for scaling the output frequency. Take a look at the table below: Photodiode type As the photodiodes are connected in parallel, setting the S2 and S3 LOW and HIGH in different combinations allows you to select different photodidodes. To select the color read by the photodiode, you use the control pins S2 and S3. Output frequency scaling selection inputs This frequency is then, read by the Arduino – this is shown in the figure below. The sensor has a current-to-frequency converter that converts the photodiodes’ readings into a square wave with a frequency that is proportional to the light intensity of the chosen color. If you take a closer look at the TCS3200 chip you can see the different filters.īy selectively choosing the photodiode filter’s readings, you’re able to detect the intensity of the different colors.

16 photodiodes with blue filter – sensitive to blue wavelength.

16 photodiodes with green filter – sensitive to green wavelength.

16 photodiodes with red filter – sensitive to red wavelength.

A photodiode is simply a semiconductor device that converts light into current. The TCS3200 has an array of photodiodes with 4 different filters. You can check the TCS3200 or a TCS230 color sensor on Maker Advisor and find the best price.

Communicates directly to microcontroller.

Programmable color and full-scale output frequency.

High-resolution conversion of light intensity to frequency.

It also contains four white LEDs that light up the object in front of it. The TCS3200 color sensor – shown in the figure below – uses a TAOS TCS3200 RGB sensor chip to detect color. This sensor is specially useful for color recognition projects such as color matching, color sorting, test strip reading and much more. The TCS3200 color sensor can detect a wide variety of colors based on their wavelength.

This post shows you how to detect colors with the Arduino using the TCS230/ TCS3200 color sensor.