AIr suspension LED warning indicator, is it possible ?

Projects General Guidance
1

Hi community,
i am very new to arduino and currently im on my second year at uni and i have to come up with a technology project .

The project is a safety system to prevent over crowding of public buses in south east asian countries .

What i need to know is

The pressure sensor provides a voltage output ranging from 0-4 V

When the Sensor is above 3.3 VOLTS ,i want an led Matrix to display "OVER CROWDED"
When the sensor is between 0.25-3.3 volts, display "SAFE"
When the sensor is malfunctioning <0.25 volts display "Unsafe"

I currently have an arduino uno starter kit .

and will use a AC/DC variable voltage adapter to mock the sensor voltage, as the actual sensor is not possible to get at the time being .

an LED MATRIX.

Please let me know whether its possible to change what is displayed by using the various trigger voltages.
kind of confused and have to meet a near deadline.

Thanks in advance .

3

That is very possible with any of the 5V Arduinos. (Don't buy a Due even though it has "bigger" specifications.)

You don't need a power supply to simulate the sensor. A potentiometer can do it. Whatever your professor wants, I guess.

So it seems the major part of the project is programming the LED matrix. Get that working and the rest of it will be 5 minutes work. Are you able to display messages? Are you able to power the matrix?

4

thank you so much for the replies. The matrix i received with my kit doesn't seem to suit my needs,would a max7219 or a LoL shield work for this.