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PCBmedo/ESP8266
From: Chris (CHRISSS)
8 Mar 2016 01:41
To: koswix
18 of 111
41688.18
In reply to
41688.17
Every building should have a mini hyperloop for deliveries, linked to everywhere else in the world so items can be sent straight to your home quickly.
From: ANT_THOMAS
8 Mar 2016 09:39
To: Ben (BENLUMLEY)
19 of 111
41688.19
In reply to
41688.16
I've currently already got sensors in various places using Arduinos+nRF24 transceivers+ds18b20 temp sensors. They make up the temperature part of my central heating setup. They're powered by USB supplies. Not made anything that is low-power enough to run long enough off batteries, though that would be the ideal situation, but plugging them in isn't an issue where I've got them located.
Just thought I'd give the ESP8266 modules a go because they're dirt cheap and my wifi network is better than the nRF24 system. Hopefully they'll have better range and reliability.
From: Ben (BENLUMLEY)
8 Mar 2016 12:11
To: ANT_THOMAS
20 of 111
41688.20
In reply to
41688.19
cool; what do you do with the data ? send it somewhere? and how does it control heating.... made something?
From: ANT_THOMAS
8 Mar 2016 14:32
To: Ben (BENLUMLEY)
21 of 111
41688.21
In reply to
41688.20
A Raspberry Pi receives it and sticks it in a mysql database.
I've written a script that is run every minute and works out based on various factors whether to turn the heating on. Target temp, current temp, target room, whether I'm in the house etc.
The boiler has an Arduino, relay and 433 MHz receiver, that's the heating switch. The RPi transmits a 433 MHz signal to turn that on or off.
From: Ben (BENLUMLEY)
8 Mar 2016 16:58
To: ANT_THOMAS
22 of 111
41688.22
In reply to
41688.21
i see. any zoning?
From: ANT_THOMAS
8 Mar 2016 18:50
To: Ben (BENLUMLEY)
23 of 111
41688.23
In reply to
41688.22
Nope, I've looked at wireless TRVs but that's a step further than I can be bothered with right now. (plus the expense)
I can already pick a target room along with target temp so when that room comes up to temperature the heating goes off (or maintains that temperature).
I've also got an "auto room" setting which currently means that if either the bedroom or living room get above the target temp it turns off. I may add an "auto room both" type setting where it only turns off when /both/ the living room and bedroom hit the target temp.
From: Chris (CHRISSS)
8 Mar 2016 18:58
To: Ben (BENLUMLEY)
24 of 111
41688.24
In reply to
41688.22
The best bit though is having a /graph!/ to look at. Although my dad did ask my Uncle sarcastically if he'd like a graph of his living room temperature and he said no.
Yes I copied Ant and made one too
:)
EDITED: 8 Mar 2016 18:59 by CHRISSS
Attachments:
Screenshot_2016-03-08-17-44-48~01.png
From: Chris (CHRISSS)
8 Mar 2016 21:16
To: ANT_THOMAS
25 of 111
41688.25
In reply to
41688.23
I didn't know you could get wireless TRVs. Interesting. Could you make your own with a normal TRV and a motor to turn it on/off? How many sensors you got in your house now?
From: Ben (BENLUMLEY)
8 Mar 2016 22:33
To: Chris (CHRISSS)
26 of 111
41688.26
In reply to
41688.25
Like the look of that... if/when I can be bothered I'd like at least some graphs... make me feel good about myself if I improve insulation or something....
Did one of you write code? Or is it something off t'internet somewhere?
Re TRV's - yes, you can get battery powered/wireless ones, there's some where the protocol has been reverse engineered - eq3 MAX! i think they are called - so you can talk to them with other stuff. You could make an electric actuator to replace a trv head I guess, maybe a stepper motor turning a bolt or something to get the up/down movement - but I'm fairly sure that if I made it it'd look too shit to put round the house.
If I did anything, think I'd add 2 port motorised valves on the feed to each rad where they split from the manifold under the floor upstairs (rads all fed from a central point here), or maybe group them into zones of a few rooms and put a 2 port valve on each zone (with one manifold per zone).
From: ANT_THOMAS
8 Mar 2016 22:37
To: Ben (BENLUMLEY)
27 of 111
41688.27
In reply to
41688.26
I believe we both wrote our own code with a similar idea.
Mines just a bash script, running as a cronjob, nothing too excited.