# How many RGB LEDs can an Arduino control?

## How many RGB LEDs can an Arduino control?

So you can control 2 RGB LEDs independently. If you added 4 more transistors that are used to gate the common 5v going to each of the 4 RGB LEDs you could control them in pairs.

How do I control RGB led with Arduino?

Connect the cathode of the RGB led which is the longer pin of RGB led to the GND of Arduino and the other three pins to the pin 11, 10, 9 of Arduino through the 220 ohm resistors. The resistors will prevent the excess amount of current to flow through the RGB led.

### How many pins are there in RGB LED?

4 pin
The 4 pin RGB connectors have one common positive line as well as a connection for each of the Red, Green and Blue color LEDs so that they can all be controlled separately to make an assortment of different colors.

What do the RGB LEDs on Arduino look like?

You will use the analogWrite function of Arduino to control the color of the LED. At first glance, RGB (Red, Green, Blue) LEDs look just like regular LEDs, however, inside the usual LED package, there are actually three LEDs, one red, one green and yes, one blue.

#### What are the colors of Arduino Lesson 3?

Arduino Sketch | Arduino Lesson 3. RGB LEDs | Adafruit Learning System The following test sketch will cycle through the colors red, green, blue, yellow, purple, and aqua. These colors being some of the standard Internet colors. /* Adafruit Arduino – Lesson 3.

How do you connect an led to an Arduino?

If you are using the common anode RGB led, then connect the long lead to the 5V of Arduino. If you have any other Arduino, then make sure that you are using the PWM pins of that Arduino. The PWM pins have a ~ sign with them.

## How can I make a 3 colour Blink on Arduino?

While getting a 3-colour blink from a common cathode RGB LED is simple I found it a bit tedious to get the same result from a common anode one due to my very basic knowledge of the ARDUINO UNO programming. So I figured out a simple circuit using diodes which needs a simple code to run (actually its modified ‘Blink’ example code).