04 Raspberry Pi Smart Thermostat Home Automation Linux Tutorial
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- čas přidán 3. 11. 2015
- filmsbykris.com
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absolutely awesome. my brother and I have plans to "automate" his new house in the near future and you have some brilliant ideas on how to do that. I've been playing around with the idea of using dedicated servers and arduinos for our project and see where it goes, but the addition of the RPi is a great idea now that I have a bit more grasp on what i can do with it. I greatly appreciate your videos and hope to see some more great work from you. especially with the tips such as the mini power supply. (admittedly I didn't know they made those)
+Destin Mincy And that power supply is first one I came across, but I'm sure there are others. So check around there might be a better option out there, maybe something smaller. Someone in another comment suggested a Nanopi, which seems to be a smaller, cheaper version of the Raspberry Pi. I don't know much about it, but it is something you might want to look into.
Sounds great. I'll have to give that a try. Love the videos man.
Destin Mincy Nice video. You may also want to checkout the review of home automation on my blog at *edwinreviews. com/home-automation-review/* Thanks, Bartholemy.
Great video! I'm setting mine up right now. I may have missed it, but what were the two red wires coming from the relay and hooking up to the one alligator clip and then going to the thermostat? Was that the power?
Thanks!
Really awesome video!
cool stuff. Have you used Node Red to program and control from the web?
Hello! What kind of relays did you use? Does a standard 5v one work? Sorry if this is a dumb question
Enjoyed your video. I am wanting to do a smart thermostat myself. I noticed you checked the power on small wires coming in through the wall. They are 24VAC not DC as far as I know. My only issue with using a Pi is that it requires a 5VDC/2A source for energy. Since I don't want to have wires hanging on the wall, I wonder if there is a way to get enough energy to tap into the red wire for the pi and for activating the relays?
Yes, look for a Step-Down Power Supply Module. You can get them on Amazon or Ebay for $3 to $6. Also, look into a device called an ESP8266. There are different versions out there, but are small micro controllers that have Wifi builtin. They run from $3 to $8 depending on some features (such as builtin USB support).
I just started a second channel and I'm going to be doing a lot of videos on the ESP8266 in the next few months.
Oh, here is the link to my second channel:
czcams.com/channels/FsvtR4aNPwefLjR1a9Hgvg.html
I live up in canada and have a air to air heat pump. it will give me heating down to 0 deg f then I need to switch to my propane furnace. So I want to set up indoor and outdoor temp. sensors and have it all setup so it will run automatically. With Node Red it would be very easy to control over IOT. Take Care
is there more information about this project using the software side ?
A system like this gets interesting when you start doing some tricks with it. For example--You mentioned your office gets more sun so it's warmer than the rest of the house. Would it be possible to control the vents in the different rooms so that you could cool one without cooling the rest of the house?
One more thing--a sort of caution--if you replaced your thermostat with a system based on a Raspberry Pi (or any other micro controller for that matter) What happens when your Raspberry Pi calls for heat (or cooling for that matter) and then shuts down?
Don't take this as a criticism. Your videos are great and my guess is that you've already given some though to backup or redundancy. It's just that knowing how to operate an HVAC system by using a computer to turn relays on and off is just enough knowledge to be dangerous.
+DancesWithRobots Well, this video is just to go over the basics. But as far as the system getting shut down, if the Pi shuts down, the signal to the relay is lost and the power to the system will be shut off. That is if you hooked it up the way I did and not the reverse, in which case if the pi shuts down it turns the system on.
I personnel don't have this system hooked up at my house all the time, just for the video, mainly because I doesn't trust myself wiring it up from the wall, and if I start a fire, I'm sure my insurance company would have a problem with this. I mostly stick to low voltage stuff, but it doesn't hurt to know how to do the high voltage stuff.
As far as cooling my office separate from the rest of the house, I can have the Pi at the thermostat, and it can communicate with other systems/sensors in the house. I could put a senor in each room and control the air based on a average, or if any room gets above/below a certain temperature. I already have computers in my office, and living room. I could hook sensors to them and have the Pi check them through the network. With my current thermostat, I can only check the temperature where it is, and different times of the day the sun beats down on different parts of the house.
Kris Occhipinti yeah I’m going to agree with you in this one... if you installed a fan on the pi you’d be fine against any heat issues, but what you’re doing is super computationally taxing.... you’re doing what? Monitoring a temp sensor and sending a volt? Not super difficult stuff
Thank you for the video. You are also a handsome guy
Make sure you are inputting the exact voltages needed by the furnace or you will destroy the HVAC mainboard! Typically these wires require up to 24 volts or less but if you are inputting too much, or too little,you can overload or cause wear to the components and ruin them. Note that under voltage can be just as bad, fatiguing components, not powering on all the way to the specification for the electronics, etc. Repairs are not cheap when dealing with an HVAC unit motherboard @ $250.00+. For those attempting this at home without any warnings...now you've been warned. @Kris - It's a miracle yours still works:)
the voltage on the wires is coming directly from the HVAC motherboard so you can assume it is ok.
old video but relays are overkill. a triac or optocoupler would be good i think.
You want a relay. It guarantees electrical isolation from the furnace and control device; otherwise there are situations where they can damage each other or cause an electrical fire.
One other option in the lines of the RPi is the NanoPi : nanopi.io/nanopi.html option for LCD screen.
The CHIP looks to be very interesting as well. But no specs on the header and the IO ports.
you should wire it directly at the furnace, at the other end of the wires than the thermostat. Having wires and alligator clips dangling from the wall is ugly and prone to disruption.