Arduino Attic Fan Control with Nextion Touch Screen GUI // Part 2 - Software

In this two-part tutorial I will show you how to build and install an Arduino controlled attic fan with a Nextion 2.8” touch screen display (GUI) for relatively low cost. I will explain why installing an Arduino controlled A/C fan could actually save you money on your air conditioning bill. I will also explain why an Arduino controlled fan using multiple DS18B20 temperature sensors makes much more sense than simply using a thermostat. To summarize, there will be times when you want your attic fan to be off and the thermostat will keep it running. There will be times when you want your attic fan on and the thermostat will shut it off. By scrapping the thermostat and using an Arduino, you can use your attic fan more efficiently. Also, by installing a Nextion touch screen control in your house, you can easily change settings on the Arduino and shut your fan off during the winter.
Part 1 of this tutorial covers the selection and installation of an A/C fan, how to use a UL listed (safe for home use) home automation relay with the Arduino, the theory behind attic fans and all the wiring for both the A/C and D/C systems. Part 2 of this tutorial will dive into the programming of both the Arduino fan control software and the Nextion touch screen GUI software.
This is my first project using a Nextion touch screen. I have to say that I am already a big fan. The Nextion software is very intuitive. After just a few tutorials I had made a nice looking and very functional GUI. Then Nextion communicates directly with the Arduino via serial communication. I noticed that many people rely on the Nextion libraries. To be honest, the libraries look more complicated. I simply used my own serial commands and things worked out great.
The following are affiliate links for products that I use in this video. Purchases through these links will result in no increase in price for you, but may result in a small commission for me. These commissions will help me continue to make informative and entertaining videos such as this one. Thank you for your support and thanks for watching!
Broan 353 Attic Fan: ebay.to/33a16j8
Functional Devices Relay RIBTE01B: ebay.to/3jTwfOK
Nextion 2.8” Touch Screen Display: ebay.to/2R5sF7S
Arduino Nano Breakout Board: ebay.to/2F9k6pP
Arduino Nano: ebay.to/2Fb51nU

[@alexjackie5220]

Great job. I was hoping you could supply the 3D print file for the display?
Thanks

[@ScienceFunInnovations]

Yes, of course. Send an email to [e-mail] and I will send it to you.

[@mirankabek9424]

Hello sir, nice project,
One question : Why don't you use nextion.h library for communication witch display ?

[@ScienceFunInnovations]

No reason in particular. I figured that I needed to either learn the Nextion commands or learn the Nextion library commands. Once I saw how simple the Nextion commands were, I decided that I could write the code without the library.

[@jackfeng1410]

Hi sir, the touch can't move after adding time. Hope you can help, thank you.

[@ScienceFunInnovations]

What exactly is it doing. Perhaps email me the details.

[@jackfeng1410]

Hi sir, can I get that hml file ?

[@ScienceFunInnovations]

Sure thing. Send an email to [e-mail].

[@jackfeng1410]

@@ScienceFunInnovations Thanks

[@jackfeng1410]

@@ScienceFunInnovations Hi sir, check an email.
Thanks