The time of the APP is synchronized with the time of the mobile phone. The APP will record data every 15 minutes according to time changes. It displays the instantaneous value of the 15th minute.
The data of ITC-308WIFI is uploaded to the cloud, and it can retain the data for 7 days.
So it is: ITC-308WIFI (connect to 2.4GHz wifi) → app (cloud) ← phone (wifi/ mobile network).
May I know in what scenarios do you need this function?
Is its temperature fluctuation relatively large?
I want to know if many people need this feature? If the demand is relatively large, I can submit it as a market proposal. Maybe engineers can improve it in the future.
thank you to all for go inside this topic. I’m using the ITC-308 wifi to control beer fermentation’s.
If the data on the trend could be more detailed it will be more usefull in order to better set the heating/cooling differential values.
To have at least 1 minute of resolution will be great.
Another question: at which frequency are updated the “real time” data on the APP?
I’m using the ITC-308 Wifi as a valve controler on solar panels to heat my pool. This work fine, but the low recording frequency doesnt allow me to see in the recorded data when the valve was closed or opened…
A recording frequency faster than once per minute would certainly allow such detection… Some recording of the heating/cooling status of the ITC-308 (at each status changes) would certainly also do the thing.
Your stuff is just next to the best thing for data analysis at an affordable price. Just a few more tweaks and gadgets, and you will be the sole leader in the datalogging tools and daisy chainning controlers available to mass market!
(and the addition of an API would open your tools to larger still market of datasavvy users)
Thanks for the consideration you have for your users!
In general any food DIY projects are interested in maintaining temperature and humidity to within a 5 degrees C (or F equivalent) or 5-10% RH. Yes, in many of these applications the temp/humidity changes this much in about 15 mins and you loose all the visibility regarding how these changes happen with only a 15 min window. Competing devices are faster and most wifi temp/humidity monitors are faster (including IBS-TH3 which can be as low as 10mins). Bluetooth monitors are almost instantaneous.
I am using a 308 to control the temperature of a chest freezer - bypassing the freezer thermostat. This works well, but I wasn’t aware of the 15minute lag on the plots. No wonder it doesn’t reflect what the unit screen says! I would like to see much much shorter lag times - instantaneous would be perfect, but even 1 minute would be much better.
The smooth line in the plot is misleading - now that I read that it is only recording every 15 minutes, I can see that I can only read the temperature with the pop out windows on the plot at these intervals. The plot should not be smoothed, but plotted as straight lines between points shown as symbols. This would make it obvious what is being shown.