esp8266 data logger stand alone

[Roberthh]

Sure. That's what I asked initially. The deep sleep time does not count. So if your device is active for only 1 minute in a 15 minute cycle, the total energy needed is 15 times less, only 2400 mAh. That was my initial assumption. If the wake time is even shorter, the better.

[moetaz]

Do you really need the access point running 24/7? Could you cope with being able to get the data off the remote say every hour or ?

the point of the access point working

as in any time you can access the device to check the current temperature

without any processing for final report

as every read taken by the device is recorded and update the access point web page

[moetaz]

Sure. That's what I asked initially. The deep sleep time does not count. So if your device is active for only 1 minute in a 15 minute cycle, the total energy needed is 15 times less, only 2400 mAh. That was my initial assumption. If the wake time is even shorter, the better.

the wake time will be 1 second as max

the device just wake up take new reading and update all system file

and go sleeping again

[davef]

So, every 15 minutes you take a new temperature reading, send it to the local end, go into esp.sleep_type(SLEEP_LIGHT), log it and display at the local end. And you can just use a socket connection, both in sta-mode.

[moetaz]

So, every 15 minutes you take a new temperature reading, send it to the local end, go into esp.sleep_type(SLEEP_LIGHT), log it and display at the local end. And you can just use a socket connection, both in sta-mode.

almost what you say is correct
the local end is saved in the device it self

so that the access point will be required to access this index.html
and my server is build based on scoket connection

[davef]

You can try esp.deepsleep() time in us? 15 minutes is a lot of microseconds!

OK you want to serve up a webpage. What are you going to display that on?

[moetaz]

You can try esp.deepsleep() time in us? 15 minutes is a lot of microseconds!

OK you want to serve up a webpage. What are you going to display that on?

i display the recorded temperature

[davef]

A PC or ?

[moetaz]

any device have wifi
pc , mobile , tablet ....

[davef]

An ESP8266 with a SSD1306 display?