![]() To light a particular segment, the control (cathode) pin for that segment is driven LOW. The displays are common anode (CA) type which means that all 8 of the LEDs have their anodes tied together (in common) and these connect to the center pin on each end of the display which are then connected to Vcc. The LEDs are labeled segment A thru G and the decimal point is DP. These displays have 7 separate LEDs comprising the 7 segments of the display plus an 8th LED that functions as a decimal point. KEY FEATURES OF LED 7-SEGMENT 0.56″ RED CA :ħ-Segment displays are very useful for making numeric or hexadecimal displays such as for a clock, timer, counter, voltmeter or similar application. For example, you can create a combination of RED and GREEN colors by uncommenting both the statements.These 7-Segment common anode red LED displays include a decimal point and have a character height of 0.56″ PACKAGE INCLUDES: You can glow an individual color or a combination of the three colors. In the loop() function, turn on the specific color by uncommenting the code. In the setup() function, set all the pins as OUTPUT because Arduino will use this pin to send voltage to the RGB LED pins in order to turn on the specific color. Circuit diagram of common Anode RGB LED with Arduino Arduino code for common Anode RGB LED with Arduino int red=3 Ĭircuit diagram of common Cathode RGB LED with Arduino Arduino code for common Cathode RGB LED with Arduino int red=3 Ĭreate variables for defining the pins of Arduino UNO where you have connected the pins of RGB LED. It will also work in the same manner as that of the common anode RGB LED.īy directly applying a voltage to both the types of LED you can get the RED color, BLUE color, GREEN color, a combination of RED and BLUE color, a combination of RED and GREEN color, a combination of BLUE and GREEN color, and a combination of all the three colors. Then to light up the RED color, connect the RED color terminal to the positive terminal of the power source. To light up a common cathode RGB LED, you have to connect its common terminal to the negative terminal of the power source. You can also light up two or all three colors simultaneously, then you will get different color combinations. ![]() Then to light up the RED color, connect the RED color terminal to the negative terminal of the power source. To light up a common anode RGB LED, you have to connect its common terminal to the positive terminal of the power source.
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