ESP8266 Community Forum

- Mon Dec 22, 2014 8:51 am #5411 Hi,
I made this sheet to try and calculate how much i could run on 2 x AA batteries if the SDK had the option to enter Modem Sleep, Light Sleep besides the known Deep Sleep.

Maybe someone could evaluate if i did my calculations correct and in the case they are not you should be able to correct :

https://docs.google.com/spreadsheets/d/ ... sp=sharing

/donnib

- Mon Dec 22, 2014 9:05 am #5414 good work. how did you change sleep modes? 0.9.4 sdk says different sleep modes but i dont see

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- Mon Dec 22, 2014 9:55 am #5426

Hi,
I made this sheet to try and calculate how much i could run on 2 x AA batteries if the SDK had the option to enter Modem Sleep, Light Sleep besides the known Deep Sleep.

Maybe someone could evaluate if i did my calculations correct and in the case they are not you should be able to correct :

https://docs.google.com/spreadsheets/d/ ... sp=sharing

/donnib

Thanks for putting this together. I will certainly follow this conversation. Since you have spend some time with power consumption - do you know he max mA i can pull from a GPIO? I have 20 mini LED currently driven off x 1.5v AA batteries that I would like to be able to turn on and off via WIFI and I wonder If I can drive them directly from GPIO. If this is hijacking your thread, lmk and I will move

- Mon Dec 22, 2014 9:58 am #5428

I have 20 mini LED currently driven off x 1.5v AA batteries that I would like to be able to turn on and off via WIFI and I wonder If I can drive them directly from GPIO

20 Leds on a single GPIO ?
You will need to add a driver for that, either a plain transistor such as 2N3904 or something like ULN2003/ULN2803.