Mutlisensor connection and controlling

Using Arduino LEDs and Multiplexing
1

Good Morning,
I am a new user for arduino uno, and i have a question about how can i connect multisensors ( Gas sensor, humidity sensor and temperature sensor) on the same arduino uno board, and the readings of all these sensors need to be shown in one sketch page and that includes integrating all these codes together...

Thanks in advance

2

You need to start here and work through some of the examples so you have some basis for developing your code.

You need to say what those sensors actually are: make and model, with link to datasheets. Then at the same time you need to try to write sketches for them all individually: you'll get help here when you post your efforts and say where you got stuck if you can't get them to work. It's very possible that there are pieces of code around for your sensors.

It's unlikely, and going against the spirit of the forum, that anyone will provide full code for you.

Then it's usually simple enough to combine the sketches, but you need to think ahead when you code the individual sketches so that you don't for example use the same pins and variable names.

3

AliAltaey:
the readings of all these sensors need to be shown in one sketch page

Hi, can you explain what you meant by that? Did you mean web page? If so, that is possible but is probably not a suitable project for a beginner. If not, how do you want to display the readings? A 16x2 or 20x4 character lcd screen is probably most suitable for a beginner.

My tip for selecting sensors is to look for those that connect via "i2c bus". This system allows many sensors (and other components) to connect to the Arduino via the same 2 wires, which makes the whole circuit much simpler and helps avoid running out of Arduino pins. Not all sensors are available with this bus or sometimes tbey are much more expensive than non-i2c equivalents, so you need to be pragmatic about it.

Paul

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On the subject of I2C, some LCD screens are available as I2C as well, which is very cool for simplicity and saving pins. Older school LCDs use something like 8 pins or so and are a pain.