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LED Bar Graph

img_led_bar

An LED bar graph is an array of LEDs designed to interface with electronic circuits or microcontrollers. Connecting an LED bar graph to a circuit is as straightforward as connecting 10 individual LEDs to 10 output pins. LED bar graphs are commonly used in applications such as battery level indicators, audio equipment, and industrial control panels, among others.

The diagram below illustrates the internal schematic of an LED bar graph. Typically, the side marked with a label represents the anode, while the opposite side corresponds to the cathode.

img_led_bar_pin

img_led_bar_sche1

Example