8/27/2023 0 Comments Download nest thermostatThe two main issues appear I've spotted so far seem to be associated with missing heating data. my plan is to keep an eye on the 10 day-website history for a while and then do another data request and see if I can do some more data analysis.Ī bit bloody useless though from Nest/google.Īfter a bit more geeking out, I can confirm that the 'cycles' data is probably mostly correct, but is incomplete and somewhat unreliable (in my case at least). That data from the 'cycles' data structure does mostly agree with the Nest website view, except for a couple of days where the 'cycle' data was blank (and another where I don't believe the figure in the cycle data).Īs an aside there is an 'energy_latest' json file in my download, which appears to be the 10 days of data as displayed on the Nest Website at time of download - that does have apparently correct data in the " totalHeatingSeconds" field - but disagrees with the 'cycles' data on a couple of the days. There is data in the 'cycles' tree - this does seem to be useful - it (claims to) include start and end-times for heating both in time format and via a 'plainText' field which contains entries such as " heating cycle from 6:01 AM to 8:09 AM". Unfortunately this appears largely useless - it's not consistently populated and what data is there seems unrealistic. The top-level of the data hierarchy is the day.Īt this per-day level there's a parameter called " totalHeatingSeconds". The json files claiming to contain the relevant data are organised as monthly summaries. I've just spend several hours parsing the json files in Python and found inconsistencies between my analysis and the 'last 10 days' data available from Nest.
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