Help with project

Projects General Guidance
1

Hello.

Its posible built some function to one arduino uno?

I want make to when temp is high or low turn on heater and fan, power usage monitor and all this to see in 5 inch lcd.

Sorry if i post this in wrong forum part.

2

The "power usage monitor" might be tricky depending on what exactly it is that you want it to measure. The rest sounds reasonably easy if you choose the right additional components.

But it will all depend on what exactly you are talking about e.g. what sort of heater, what sort of fan, what temperatures? Details are always important.

Steve

3

And a 5 inch LCD may involve a large number of pixels compared to the amount of memory on an Arduino. Post a link to the datasheet for the LCD you plan to use.

...R

4

I probably use this LCD with UNO if its good choise. Im want use 12v/10w heater and 2x12v fans. Im new in arduino so im know about that what i found in internet.

5

800 x 480 pixels is 384,000 and because it is colour that means at least one byte per pixel. An Arduino Mega has only 8,000 bytes of SRAM and a lot of that will be needed to run your program even if there is no screen..

...R

6

But still i can make this all in one tower ?

7

Miilhouse:
But still i can make this all in one tower ?

I am wondering if it is practical to use that 5" display with an Arduino. Hopefully someone with more direct experience of displays will come along.

What do you plan to display on the screen?

If you need that big screen maybe a RaspberryPi would be more suitable?

...R

8

I use an LCD 1602 on I2C to display temperature, humidity, pressure (Arduino nano).

But It was very difficult to find the library to match the version of LCD I have.

9

falexandru:
I use an LCD 1602 on I2C to display temperature, humidity, pressure (Arduino nano).

That LCD has 2 rows of 16 characters. It is very much simpler than the 5" 800x480 colour display that the OP has mentioned.

...R

10

@Robin2

Right. My question is whether an 1602 would suffice to display few values. If more than that, that is a different story. In my very personal opinion, without knowing more about the project except is about few parameters to measure (all of them have to be displayed?), an 1602 is enough.

But, well, it is about guessing. :-).

11

falexandru:
In my very personal opinion, without knowing more about the project except is about few parameters to measure (all of them have to be displayed?), an 1602 is enough.

Good point. Sorry I misunderstood.

...R

12

What about this LCD 3.5 inch but not touch.

https://www.aliexpress.com/item/Free-shippping-LCD-module-3-5-inch-TFT-LCD-screen-3-5-for-Arduino-UNO-R3/32710142921.html?spm=2114.search0204.3.29.3aad5cbcjE3w10&ws_ab_test=searchweb0_0,searchweb201602_1_10152_10151_10065_10344_10068_10342_10343_5722611_10340_10341_10696_5722911_5722811_5722711_10084_10083_10618_10307_10820_10821_10303_10302_10059_306_100031_10103_10624_10623_10622_10621_10620_5722511,searchweb201603_6,ppcSwitch_4_ppcChannel&algo_expid=019ed83b-1280-4846-9f9b-3fbdb65bb4c0-4&algo_pvid=019ed83b-1280-4846-9f9b-3fbdb65bb4c0&priceBeautifyAB=0

13

Miilhouse:
What about this LCD 3.5 inch but not touch.

Before you choose hardware you have to specify what you want to do with it.

You have not told us what you want to display on the screen and how the user will use it. There is a big difference between showing 3 numbers that change once an hour and a system that has interactive graphics that change every few milliseconds and which must respond immediately to user input.

A diagram (even a very rough one) of what the screen display should look like would be a big help. See this Simple Image Guide

...R