How does a multiplexer work arduino?

How does a multiplexer work arduino?

The multiplexer is an integrated circuit made up of logic circuits allowing several signals to be concentrated on the same output (mutiplexing or mux) or to connect an input to one of its N outputs (demultiplexing or demux).

What is multiplexer IC?

A Multiplexer IC allows you to interface a number of pins, with a single pin, by using a set of state pins to determine which ones are connected. e.g. you could have 8 LEDs as Outputs, all controlled from a single output. You could also have 8 different switches as Inputs, which are all interfaced to a single input.

How do you connect multiplexers?

To achieve the first two MUX is connected in parallel and then the output of those two are feeded as input to the 3rd MUX as shown below. The control/select line of the first two MUX is connected together to form a single line (S0) and then the control line of the 3rd MUX is used as the second control/select signal.

How does I2C multiplexer work?

I2C is a ‘short distance’ ‘serial communication protocol’, so data is transferred ‘bit-by-bit’ along the single wire or the SDA line. The output of bits is synchronized to the sampling of bits by a clock signal ‘shared’ between the master and the slave. The clock signal is always controlled by the master.

What is IC analog switch?

The analogue (or PETR) switch, also called the bilateral switch, is an electronic component that behaves in a similar way to a relay, but has no moving parts. The switching element is normally a pair of MOSFET transistors, one an N-channel device, the other a P-channel device.

How do I add an analog pin to my Arduino?

There are a several ways to connect 8 analog inputs to an Arduino….2 Answers

1. Add an analog multiplexer, as georgebrindeiro suggested. Such as: (a), (b), (c), (d), etc.
2. Replace the Arduino with one that has enough analog inputs already built-in.
3. Add one or more external ADCs, and connect it to digital pins of your CPU.