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    Oh yes. For xmas I got a 10" LCD touch screen...

    Oh yes.

    For xmas I got a 10" LCD touch screen for the RPi. Hoping to use grafana and some custom HTML to create a dashboard/interface for it.
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    Long time, no update. But an update. My...

    Long time, no update.

    But an update.

    My as-simple-as-possibly data-fabric... a single json blob for everything... has reached it's limits now that things have expanded.

    Since my last update...
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    Next on the list: * Find a way to export and...

    Next on the list:

    * Find a way to export and visualise the active schedules and their selected target temps.
    * Find a way to pass the meta data in the "Demand" object so that it can be traced to...
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    And finally the visualisation I have been trying...

    And finally the visualisation I have been trying to produce for a while and finally got something nice working. The active demands for heating/lighting.
    http://i.imgur.com/zPTitQB.png

    You can...
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    So an update after a long pause. In November I...

    So an update after a long pause.
    In November I had my heating system changed to natural gas and a combi boiler. I spent the winter with just a 3 point timer.

    With the Covid situation emerging in...
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    Just one final comment on InfluxDB. It is not...

    Just one final comment on InfluxDB.

    It is not round robin. I see some people see this as an advantage. I like the round robin nature, the files never grow. I never need to worry about running...
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    On ESPs. Yes I totally agree they are an amazing...

    On ESPs. Yes I totally agree they are an amazing platform to do all manor of things.

    The one downside of them in power consumption. They can consume around an average of 30-40mA of current. ...
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    On OpenTherm. You are right that brute forcing...

    On OpenTherm. You are right that brute forcing the relay ON/OFF on the power feed to the boiler is certainly not a wise option on a new gas boiler, even though it might appear to work. The option I...
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    A small update, purely graphical. I spend half...

    A small update, purely graphical. I spend half an hour working with Cacti to combine the graphs:

    Ambient Temperatures
    Heating Status
    Presence Home

    To create this beauty. All the information...
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    Hi, thanks for your thoughts. Asides from the...

    Hi, thanks for your thoughts.

    Asides from the experiment of controlling the heating loop temp at 40*C, which I don't think I really need to do, the boiler really only cycles at most 2 or 3 times...
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    Technically no RF is digital, not Wifi, not GSM. ...

    Technically no RF is digital, not Wifi, not GSM. Mother nature does not do digital.

    But I take your point that the payload is digitally encoded.

    It is the analogue nature of RF that scares me...
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    So the issue I'm facing currently is less to do...

    So the issue I'm facing currently is less to do with the control system and more about my house. I only bought it in July.

    The living room seems to be the coldest room in the house. It's also...
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    So just a little update on stuff I did over the...

    So just a little update on stuff I did over the weekend.

    This started out as just pure geeky fun but I put temp probes on the heating in and out pipes. Producing this graph:
    ...
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    Wifi, bluethooth, ethernet. But you could argue...

    Wifi, bluethooth, ethernet. But you could argue the first two are RF. So maybe I should have been clearer and specified 433MHz non-digital RF. Like key fobs.

    Still the same old mine field with...
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    As a random aside I had an epiphany about "RF". ...

    As a random aside I had an epiphany about "RF". I hate it because it's old-tech, because it's horrible to work with as a casual hobbyiest/maker. Electronics with RF involve horrid mathematics.
    ...
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    Two options which are viable for the PI to avoid...

    Two options which are viable for the PI to avoid the SD card are:

    1. Move high activity folders to a RAM disk to keep the SD card writes low. Things such as /var and /dev etc. Although you lose...
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    Maybe. I just don't think flash memory is great...

    Maybe. I just don't think flash memory is great for a full OS as it normally entails a lot of "thrash" and "churn", writing and rewriting constantly. Things may have improved but I vaguely recall...
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    Thank you. I was hoping it was of interest to at...

    Thank you. I was hoping it was of interest to at least some one. However it also helps me solidify my thoughts.

    So this morning I noticed the Raspberry PI in the garage was sick :( It only send...
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    Quick update on the first proper test of the...

    Quick update on the first proper test of the presence detection as I was working from home yesterday.

    So it passes on both fronts. Yesterday when I was in all day it remained active and kept my...
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    So... presence awareness. I didn't like that...

    So... presence awareness.

    I didn't like that the following schedule:

    6:30-8:00 Mon-Fri 17:00-23:00 Mon-Fri - Living Room - 20C

    would not account in anyway for me to be "out" during the...
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    So I finally got the heating control implemented...

    So I finally got the heating control implemented and functioning. I did have to pull a feature or two out of the Version 2.0 stack, but as "Demands" had already been used for the group lighting I...
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    A little off-topic from heating control, but a...

    A little off-topic from heating control, but a cool feature that popped up.

    I have 4 lights in my living room. All are plugged into wall sockets. On an evening I typically have to go around the...
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    So heating control. Now bear in mind I am kind...

    So heating control. Now bear in mind I am kind of deliberately doing this "clean room" style. That means I am not really looking at what others are doing or how they do it. I am trying to design...
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    So far my research has only found a rather nasty...

    So far my research has only found a rather nasty looking Open TRV project which is very unappealing or... mains operated valves which aren't much better.

    Surely someone must have created an open...
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    Also, just a quick, but VERY important warning...

    Also, just a quick, but VERY important warning about current clamps.

    NEVER EVER put the clamp around a live wire with it unloaded. Without a burden resistor on a current clamp (transformer) the...
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