#ARDUINO RGB LED BRIGHTNESS CONTROL SOFTWARE#
#ARDUINO RGB LED BRIGHTNESS CONTROL CODE#

Below are two more functions we've written, own sketch, you cancopy and paste that section into your code. If you'd like to use one of these colors in your This function displays the eight 'main' colors that the RGB LED Here's the mainColors() function we've written.

#ARDUINO RGB LED BRIGHTNESS CONTROL CODE#

here the actual code is further down in this sketch. We've written a function called showSpectrum() that smoothly lets you dim a LED from full-off to full-on over 255 steps. The analogWrite() function lets us do this. you can do so by varying the brightness of the individual If you want to generate more than eight colors, The above function turns the individual LEDs full-on and We've written a function called mainColors() that steps a total of eight colors (if you count 'black' as a color). and green) on and off in various combinations. The first way is to turn the individual LEDs (red, blue, We'll show you two ways to run the RGB LED. the sketch into sections, and not having everything in

This makes the sketch easier to follow by dividing up In this sketch, we'll start writing our own functions. Here we'll configure the Arduino pins we're using to (Try changing this to make the fading faster or slower.) This variable controls how fast we loop through the colors. try to change the value, so it's considered good form.) Arduino will give you a friendly warning if you accidentally (You don't have to do this, but if you do, the variable indicates that this is a 'constant' value that will Here's a new trick: putting the word 'const' in front of a First we'll define the pins by name to make the sketch With lots of help from the Arduino community. This sketch was written by SparkFun Electronics, Of the resistor to Arduino digital pin 11. Of the resistor to Arduino digital pin 10.Ĭonnect BLUE to a 330 ohm resistor. Of the resistor to Arduino digital pin 9.Ĭonnect GREEN to a 330 ohm resistor. The pins are ordered RED, COMMON, GREEN, BLUE.Ĭonnect RED to a 330 ohm resistor. Starting at the flattened edge of the flange on the LED, The red, green and blue mix to form new colors. When you run them at different brightnesses, Make an RGB LED display a rainbow of colors!Īn RGB LED is actually three LEDs (red, green, and blue) in Hit upload, and see what happens! language:cpp You can also copy and paste the following code into the Arduino IDE. To open the code go to: File > examples > SIK Guide Code > Circuit_03 Open the code for Circuit 3 by accessing the “SIK Guide Code” you downloaded and placed into your “Examples” folder earlier. Coding in the Arduino language will control your circuit.

#ARDUINO RGB LED BRIGHTNESS CONTROL SOFTWARE#

Open Up the Arduino IDE software on your computer. Connect the Arduino Uno to the computer via USB cable.Having a hard time seeing the circuit? Click on the Fritzing diagram to see a bigger image. Connect the Arduino 5v pin to the breadboard 5v terminal, and connect the Arduino GND pin to the breadboard GND terminal.Now, we have to supply the power to the circuit: Connect the shift register Pin 11 (SRCLK) to the Arduino pin 9.Connect the shift register Pin 12 (RCLK) to the Arduino pin 10.Connect the shift register Pin 13 (DS) to the Arduino pin 11.Connect the shift register Pin 14 (DS) to the Arduino pin 12.Next, we need to connect the shift register (74hc595) to the Arduino Uno to control it. Repeat the same process for other RGB LEDs. Connect third led pin 3 to another shift register pin 15(Q0).Connect third led pin 2 to shift register pin 7(Q7).Connect third led pin 1 to shift register pin 6(Q6).Connect second led pin 3 to shift register pin 5 (Q5).Connect second led pin 2 to shift register pin 4 (Q4).Connect second led pin 1 to shift register pin 3 (Q3).

Connect led pin 3 to shift register pin 2 (Q2).

Connect led pin 2 to shift register pin 1 (Q1).

Connect led pin 1 to shift register pin 15 (Q0).

Now we have to connect RGB LEDs to the shift register. Do the same for other shift registers.Ĭonnect a jumper wire between shift register pin 11 (SRCLK) to another shift register pin (SRCLK). Do the same for other shift registers.Ĭonnect a jumper wire between shift register pin 12 (RCLK) to another shift register pin 12 (RCLK). OE pin is used to control the brightness of the LEDs. Do the same for other shift registers.Ĭonnect a jumper wire between shift register pin 13 (OE) to another shift register pin 13 (OE). Now, connect a jumper wire between shift register pin 9 (Q7`) to another shift register pin 14 (DS) for sending data to another IC. To build a daisy chain circuit, we have to connect the shift register to another. Next, connect shift register pins 16 (VCC) and 10 (SRCLR) to the breadboard 5v terminal and connect pins 8 (GND) to the breadboard GND terminal.

Arduino rgb led brightness control