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Topic: Intelligent Thermostat Source? (Read 510 times) previous topic - next topic

nkhan

Dec 29, 2018, 07:34 pm Last Edit: Dec 29, 2018, 07:44 pm by nkhan
Hello!

Objective is to build an intelligent thermostat, my role for this project is to implement hardware.

In the end, we have to present the project in engineering labs, so we can't connect to an actual boiler, however it needs to do the same functions as a smart thermostat, heating, A/C, AI technology. The labs have oscilloscopes, multimeters, voltmeters, the typical resources in university electronic circuit labs. Since an Arduino can only read DC, how would I power the thermostat using a bridge rectifier and external transformer, and the lab resources?

Materials implemented so far: breadboard, Arduino MKR1000 (5V), 16x2 i2c LCD screen, MLX90614 sensor, 4 channel relay, 1N4004 diodes (should I use 1n4007 instead?).

Pictures attached are references, to see what I have so far. Any feedback on source or improvements would be appreciated. Please let me know if you have any questions.

Thanks!


PaulRB

#1
Dec 29, 2018, 07:37 pm Last Edit: Dec 29, 2018, 08:31 pm by PaulRB


My reaction to these pictures is: you have plenty of space on your breaboard. The Arduino has pins sticking out of the bottom of the board. Why do you think it has those pins sticking down?

My second thought is: a university lab with table-cloths? That's posh!

hammy

#2
Dec 29, 2018, 07:45 pm Last Edit: Dec 29, 2018, 07:47 pm by hammy
Yep building a power supply as you suggest should do the job.

As these things are commercially available ; I suspect this is a project as part of a course - you will need to research this stuff and justify your decisions . This route will give you the maximum benefit .

Final tip - dump the pp3 , that is not man enough for this project

PerryBebbington

My thoughts are you have an interesting selection of parts, when does your assignment have to be handed in?

nkhan

Yep building a power supply as you suggest should do the job.

As these things are commercially available ; I suspect this is a project as part of a course - you will need to research this stuff and justify your decisions . This route will give you the maximum benefit .

Final tip - dump the pp3 , that is not man enough for this project

Thanks, appreciate it. Yup, researched it, references say use a bridge rectifier and a 24v external transformer, however all references are designed using an actual boiler. Do you know how to implement these materials on a voltmeter, multi meter, or an oscilloscope?

Also, what's a pp3 lol?

Thanks

Paul_KD7HB

What you mean by intelligent thermostat? The ones I have had installed in recent years follow the Federal mandate to attempt to maintain a constant in-house temperature. Saves energy. On top of that some state requirements include an outside temperature sensor to if the outside is warm enough, very little energy will be added to the inside temperature.

Paul

nkhan



My reaction to these pictures is: you have plenty of space on your breaboard. The Arduino has pins sticking out of the bottom of the board. Why do you think it has those pins sticking down?

My second thought is: a university lab with table-cloths? That's posh!
Thanks, moved everything up and placed arduino on board. Doing this at home atm lol, haven't tried it in lab yet. Also, just realized will I even need to buy a external transformer, or can the voltmeter play that role?

nkhan

What you mean by intelligent thermostat? The ones I have had installed in recent years follow the Federal mandate to attempt to maintain a constant in-house temperature. Saves energy. On top of that some state requirements include an outside temperature sensor to if the outside is warm enough, very little energy will be added to the inside temperature.

Paul
Basically a thermostat like a nest that uses AI tools and an android application. It should learn behaviour of user and act accordingly. However we are just going to upload sample data and thermostat will behave accordingly.

Will the resources in electronic circuits labs (voltmeter, multimeters, etc) act as as external transformers?

Thanks

PaulRB

dump the pp3 , that is not man enough for this project
Or any other project, except maybe a smoke alarm.

Paul_KD7HB

Basically a thermostat like a nest that uses AI tools and an android application. It should learn behaviour of user and act accordingly. However we are just going to upload sample data and thermostat will behave accordingly.

Will the resources in electronic circuits labs (voltmeter, multimeters, etc) act as as external transformers?

Thanks
If you have to ask, you are in the wrong class!

Paul

Willpatel_Kendmirez

Stumbled across this thead and wonder if OP has made any headway?

I'm keen to know what it means that a thermostat...

..... should learn behaviour of user and act accordingly.
I wonder if that means it should perhaps monitor the times and days of the week there are people in the room / building and then preempt their arrival and have the place all toasty for them?

I'm also wondering how s/he got on with using a voltmeter as a transformer.

Will the resources in electronic circuits labs (voltmeter, multimeters, etc) act as as external transformers?

dougp

I wonder if that means it should perhaps monitor the times and days of the week there are people in the room / building and then preempt their arrival and have the place all toasty for them?
I built a Heathkit thermostat way back which did that.  They called it an 'anticipator'.  No sense of bodies in the room but it learned how the house temp rose and fell and would have room temp at setpoint at the programmed time no matter the outside temp once the schedule was learned.  Nice for those frosty mornings!

I'm also wondering how s/he got on with using a voltmeter as a transformer.
:smiley-roll:

Everything we call real is made of things that cannot be regarded as real.  If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet. - Niels Bohr

No private consultations undertaken!

Willpatel_Kendmirez

I built a Heathkit thermostat way back which did that.  They called it an 'anticipator'.
Was it billed as "AI" on the box? And what AI techniques did it use?


dougp

Was it billed as "AI" on the box? And what AI techniques did it use?
No.  I don't think they even called it 'smart'.   "what AI techniques did it use?"  Ha!  I imagine an algorithm which factored in room temp. rise/fall vs. time.  Probably a piece of the HAL9000.  :D
Everything we call real is made of things that cannot be regarded as real.  If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet. - Niels Bohr

No private consultations undertaken!

PaulRB

"Alexa, please raise the room temperature by two degrees"

"I'm sorry, Dave, I can't do that"

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