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IOT PROGRAMMABLE TIMER
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

IOT PROGRAMMABLE TIMER

by mlever on Sun Dec 24, 2017 11:10 pm

Hi,

Can anyone please point a complete beginner in the right direction to get started with an IOT wireless programmable clock timer to switch on and off HVAC motors at scheduled times and days of the week.

I am thinking of an Arduino board with relay shield and maybe also a wireless shield or ESP8266 chip and that's about as far as I have got in my thinking and am open to alternative suggestions.

Thanks

mlever
 
Posts: 3
Joined: Sun Dec 24, 2017 10:57 pm

Re: IOT PROGRAMMABLE TIMER

by adafruit_support_bill on Mon Dec 25, 2017 6:56 am

There are a lot of options for processors. Something like the Feather M0 WiFi would be a good start: https://www.adafruit.com/product/3010
For HVAC motors, you need to start working backwards from the motor requirements to select an appropriate relay. Motors are inductive loads. That means selecting a relay specifically rated for a motor of that size (or larger). For relays without motor ratings, a de-rating factor or 0.4 or less is common.

adafruit_support_bill
 
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Re: IOT PROGRAMMABLE TIMER

by mlever on Tue Dec 26, 2017 8:57 pm

Many thanks for this reply.

Can I set the clock timer schedules and days of the week for each relay remotely via the IO dashboard?

If so how?

mlever
 
Posts: 3
Joined: Sun Dec 24, 2017 10:57 pm

Re: IOT PROGRAMMABLE TIMER

by adafruit_support_bill on Wed Dec 27, 2017 7:36 am

These are all general purpose microcontrollers that require programming. There is an Arduino "TIme" library that you can use for writing time & date related code.
http://playground.arduino.cc/Code/Time

There are also libraries for implementing schedules:
https://playground.arduino.cc/Code/TaskScheduler

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Re: IOT PROGRAMMABLE TIMER

by mlever on Fri Dec 29, 2017 4:19 am

Thanks again. I'll take a look at these.

mlever
 
Posts: 3
Joined: Sun Dec 24, 2017 10:57 pm

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