Automate A Fan: Arduino + Relay + Temperature Sensor

Build a smarter exhaust fan that operates in a temperature range you define. This allows you to keep a good climate control without running a fan 24/7. Using an Arduino Nano, relay, and a sensor lets build a smarter fan for our indoor grow!

** Giveaway**
To enter,
- Subscribe to the Channel! ( Its ok if you already are ( Thanks! ))
- Comment on how you will use the Arduino, relay, and sensor!
If you are a US resident I will pay for shipping, if you are outside the US but still want to enter be prepared to cover shipping ( sorry in advanced im not swimming in YouTube dollars yet! )

Links To Parts:

Links To Program:

[richardsanchez]

I am updating a attic exhaust fan that has been in this house for over 25 years and does not currently work, this is exactly what I needed. You have done a great step by step instructional tutorial Thank You!!!!

[AnthonyHandcock]

The perfect video for my research. I have almost the same project in mind. I hope the radishes you grew were firm and crispy.

[littlered]

More please!! I really appreciate you for taking the time to cover these topics. I'm excited to see what more you can come up with.

[maintenanceman]

Yes! i found what may work for my project. I'm building a heating system useing an radiator from a truck. Paint it black, put in a box with glass top mount it on the roof. The sun will heat the fluid (Radiator Fluid or Oil). After reaching around 200*, a valve would open & a 12v pump would push the hot fluid into a hot water holding tank. Then useing a radiator with a fan on the back side. Mounted inside the room you want to heat. the heated fluid pulled from the hot holding tank the, fan would blow the heat into the room. Then the cooled fluid go into a cold holding tank to go back to the roof to be heated again. A closed system with everything running on a 12v or 24v solar system. Controlling the system will be a learning cruve for me. Temp sensor, Open/Close valves, Fans & blowers.. This will help me get started. Thanks

[Electrohydrodynamics]

Thank you so much! Very simple, but not overly simplistic project and great for learning practical digital electronics.

[hannescamitz]

Nice project but a tip of advice.
Never, Ever solder mains cables no matter what, the reason for this is as simple as that the solder tension will adjust to the pressure of the connector and in the end will end up in a fire, there's a reason why this is illegal in some country when installing mains inte building.

[-ColorMehJewish-]

A nice tip for holding the pins in place to solder --- u could insert them into the Arduino holes then stab the other long ends into a piece of foam like packing foam. Or styrofoam.
I sometimes use a kneadable eraser for holding the pins too.
Just mentioning in case it helps you or anyone who reads.

[Macifikation]

You're doing a great job explaining this. I just made a clone box and this will work perfectly! Thank you

[zarouszz]

Considering this is a final assembly, It would probably be easier to solder a wire under the header on the Arduino from Aref to 3.3v rather than try to put two wires in a crimp connector.

[muzguz]

Soldering tip time....soldering iron goes on one side of the component and board, the other side of the component goes the solder that is touching the component and board. Solder should simultaneously melt on the component and board at the same time and you will have a nice shiny solder joint, this means it didn't get too got and you got good flow from the flux.

[Joemama-kmnp]

LoL, before I clicked on your profile I stumbled across your channel and thought you were some smart pot head growing weed! Good job explaining it, easy to follow.

[genesmith]

This is great. I am planning to build a cooling system for my heat frame box that I use for germinating seeds before planting. They need to be kept at a certain temperature and this will be just what I was thinking about.

[waltercrumbley]

Thank you for this idea. I will be using this to control a misting system in my new NVAC Aquaponic Greenhouse. Looks like a fun project

[anthonysicily]

Perfect for my wine/root cellar exhaust fan. I changed it to read two temps and only exhaust if hotter inside than out, 👍

Thank you

[motojojo]

Been looking for a way to keep my surveillance dvrs cool, this will work perfectly!

[shafi]

Wow amazing video. Well made. Very well explained. I was thinking of making one so my fan can turn on when heater is on and fan off when the heater is off.

[JackMachiela]

I don't need to be in the giveaway, just wanted to say that you've made a nice and smooth video. Easy to listen to, and you've covered a lot of stuff. I've subscribed.

[gitto]

Quite honestly on of the best explained video i have ever seen very neat sucinct and to the point !!! Brilliant well done

[bogusbyte]

Nicely done.... why not just solder some leads streight to the temp probe.... and skip the dupont and headerpins.... or even just plug the legs of the probe streight in to the dupont connector? On the board side the dupont makes more sence... but that just me :)

[markkent]

Good design mate. Not bad at all. Probably agree with Zarouszz. I am very fussy with Ac (I'm a 220er). Don't worry about the prizes for me (foreigner anyway), but that is very cool of you. Don't see small peddlers doing that often... Puts a bit of faith back in humanity as far as im concerned to well done bud./ Ill keep watching as a result of your kindness