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Step 2What is multiplexing?
Multiplexing is when you control lots of LEDs with a few IO pins.
It is based on having to or more 7 segment displays and connecting them together, an example of what they would display is 00, 11, 22, 33, 44, 55, 66, 77, 88, 99.
But what we do in this case is control each GND (-) induvidualy which turns it into a multiplexed display.
We will switch displays every 0.5ms which gives us control of each display.
It is usefull when you are building a project with lots of components and are short of IO pins.
In this example, we will be controlling 2 7 segment displays with 9 IO pins.
If we don't use multiplexing, we will need 14 IO pins to control the whole thing.
It is based on having to or more 7 segment displays and connecting them together, an example of what they would display is 00, 11, 22, 33, 44, 55, 66, 77, 88, 99.
But what we do in this case is control each GND (-) induvidualy which turns it into a multiplexed display.
We will switch displays every 0.5ms which gives us control of each display.
It is usefull when you are building a project with lots of components and are short of IO pins.
In this example, we will be controlling 2 7 segment displays with 9 IO pins.
If we don't use multiplexing, we will need 14 IO pins to control the whole thing.
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