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WHO USED ALL THE HOT WATER!!! Need a simple temperature data logger ** UPDATE **

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Brumby:

--- Quote from: ledtester on August 21, 2023, 06:22:48 pm ---Install a instant hot water electric shower head like this one:

--- End quote ---
Love the wiring!  <<shudder>>  but, no.

1. Situation prevents plumbing alterations.  (No, you don't need to know why.)
2. Same for electrical
3. Instantaneous water runs at full electrical tariff, so it will cost far more to run
4. Doesn't address the problem of the shower hog, in fact, it enables them


I will repeat my plea to all - Changing the hot water system is not a solution here!

Brumby:

--- Quote from: mendip_discovery on August 21, 2023, 06:46:17 pm ---Someone I know did this to monitor his tea drinking,
http://www.ronketti.org.uk/temp.html


--- Quote ---For the technically curious, this lot is being processed by a Raspberry Pi, running Raspbian Linux. The Dallas DS18B20 temperature sensors are connected to the GPIO headers (3V3, Gnd and data, which is on GPIO4) and read by the kernel w1_therm module. This then punts the output to a logfile which is read by a bit of Perl that converts the tabular data to a graph, and builds a .png of it before uploading it to the server. It's not perfect. For some reason every now and then the sensor returns a "doesn't respond to CONVERT_TEMP" error and a -ve temperature. This is smoothed out by checking the CRC and re-reading if necessary.
--- End quote ---

--- End quote ---

Thank you.  It's ideas like this that I was hoping to see.

IanB:
Depending on your budget, you might consider this?

https://www.thermoworks.com/node/

It has the advantage that after it has served its purpose, you might find other uses for it (e.g. monitoring fridge/freezer temperatures).

Brumby:
That looks like just the sort of off-the-shelf product that might work.  The 30 second minimum sampling time might miss short bursts of temperature change ... but, then, it's the longer ones that are really of interest.

The future usefulness is a good consideration.  (I hadn't got that far in my thinking yet.)

Thanks for this.

tautech:

--- Quote from: Brumby on August 22, 2023, 12:47:04 am ---
--- Quote from: ledtester on August 21, 2023, 06:22:48 pm ---Install a instant hot water electric shower head like this one:

--- End quote ---
Love the wiring!  <<shudder>>  but, no.

1. Situation prevents plumbing alterations.  (No, you don't need to know why.)
2. Same for electrical
3. Instantaneous water runs at full electrical tariff, so it will cost far more to run
4. Doesn't address the problem of the shower hog, in fact, it enables them


I will repeat my plea to all - Changing the hot water system is not a solution here!

--- End quote ---
55 replies and these 2 facts weren't included in the OP.  :-//

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