COLOR WHEEL PICKER RGB PRO
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The program won’t progress past the setup if it does not establish a connection with the color sensor, it will show up as “Sensor Error” on your LCD if it cannot establish a connection. This is just a visual effect which takes about 1.5 seconds to run through and can be removed if you’d like your color picker to start up quicker. There is a brief routine to fade the LED between red, green and blue when starting up.

COLOR WHEEL PICKER RGB CODE

They are still defined in the code as standard digital IO pins.

COLOR WHEEL PICKER RGB PRO

The color sensor LED and pushbutton are connected to the Pro Micro’s analogue inputs, being used as digital IO, as there were not enough digital IO pins available. I usually try and keep the pins sequential but in this example they’re a bit mixed up because of two things, one because I needed to work around the PWM pins for the LED and the second because the pins on the Pro Micro are not all in sequential order. The LCD assigned pins are in a weird order (15 ,14 ,16 ,4 ,5 ,8 ,7). This is easily done by clicking on Tools -> Manage Libraries in your IDE and then typing in “Adafruit TCS” in the search bar and installing the found library. You will need to have the Adafruit libraries installed. If you'd like to try writing up your own code then this is a useful example to work through and start with. The color identification and LED portion is based on the Adafruit colorview example code. The code contains comments to explain what each section is doing.

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Here is a link to the RGB colour picker code: Download RGB Color Picker Code

This particular board, the Arduino Pro Micro acts as a Leonardo when connected to your PC, so make sure to select the correct board type in the Arduino IDE otherwise you'll get errors when you try and upload the code. The USB cable powers the board and connected components which may damage them if they are not connected correctly.

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Now that you’ve got your components assembled onto the breadboard and made the required interconnections, you can load the code onto your Arduino using your PC and check that the components work correctly.Ĭheck all of your connections again before plugging the USB cable into your Arduino to make sure that they are correct. For example, you need PWM enabled pins for the control of the RGB LED in order to simulate the picked RGB color. If you are using a different Arduino board, make sure that you have the same functionality on each pin as used on the Pro Micro. It is controlled using the Adafruit library discussed in the code section. Make sure that you’re using the correct pins for this interface if you’re using a different board. The RGB color sensor is connected to the Arduino using the simple I2C interface. The 470Ω resistor is used for the green leg of the LED to reduce its brightness a little to create more realistic looking colors. The 10K resistors are used for the push button connection and the 220Ω resistors for the Color sensor LED and the red and blue legs of the RGB LED. There is nothing particularly different or strange with any of these connections between the components and the Arduino, they are typical basic circuit configurations for connecting an LCD, push button and LEDs to the Arduino. The components are connected onto the breadboard as shown in the circuit diagram.

COLOR WHEEL PICKER RGB SOFTWARE

It’s always a good idea to assemble your components onto a breadboard first to test them and make sure that your circuit and software are working correctly before making any soldered connections. If you do not, follow the linked guides for more information and in-depth explanations. This guide assumes that you’ve worked with an Arduino micro-controller before know the basics of programming the Arduino and connecting an LCD panel to it. It can however be easily adapted to run on most of the other Arduino compatible boards with enough IO, such as the Uno, Leonardo or Mega. I usually try to use an Arduino Uno as this is one of the most widely used Arduino boards, but to make this device portable, it has been designed around an Arduino Pro Micro board. You could also modify the design to accommodate a battery to make it even more portable. I’ve designed a simple 3D printed enclosure for the electronics to make the device portable, simply plug it into a USB port, charger or power bank to power it up. If you enjoy this Instructable, please vote for it in the Make It Glow Contest. Simply push a button to scan the color of the object using a cheap TCS34725 colour sensor module and you’re given the RGB color values as well as an indication of the measured color on an RGB LED. Easily pick colors from physical objects with this Arduino based RGB color picker, enabling you to recreate the colors you see in real life objects on your pc or mobile phone.

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