ESP8266 Community Forum

- Sat Jul 23, 2016 1:53 pm #51354 I still don't get what you want to achieve with all that ballast.
The esp8266 is well copeing with low-power-consumption design.
All the ATtiny, mosfet, step-up etc looks like snakeoil to me.

Useing a LiIon rechargeable cell or a lithium battery will give you wekks (months) of operation.
If you go for the more expensive LiFePO4 rechargeable, you have a allmost perfect stable3.3V over ~90% of useable charge. Every modern chip is capable of handling the max. charge end voltage of 3.6V.
Monitor Vcc via read_vcc and do a final deep-sleep w/o wakeuptime if battery runs flat.

As easy as that!

P.S.: is you still think it's necessary to power off some sensors, just do it via gpio. If you are low on gpios, use an ESP-12, doesn't consume more than ESP-01

- Sat Jul 23, 2016 2:10 pm #51358 I am trying to achieve exactly what his post is about, I am thinking of end user usability, those types of batteries cost more than AA, on my own tests the AA batteries were only just under 3.3v and the chip would not work and or sensor data was NAN. I have explained I cannot get deep sleep working as I have tried on 3 chips and been unable to solder to GPIO16. I am already turning the sensors off with GPIO. I want to stick with ESP01 for SOME projects due to the cost and size (here in Spain the ESP are not as cheap as they are everywhere else and orders from outside EU cost a lot and seldom actually make it to my home) it fits in with what I have planned so my way of thinking at this moment is:

Use the step up regulator to ensure that the full amount of the battery is used, this is my aim.

The second issue I wanted to solve is to reduce the usage cost of the regulator, which that post appears to solve. If there is a way to ensure that the full battery is used down to the end and the chips and sensors function correctly and when in light sleep the regulator does not use up the battery I am definitely open to knowing how to do this as it will save time and money.

Amazing selection of ESP8266 and ESP32 modules can be found here.

- Sat Jul 23, 2016 2:40 pm #51359 hmm, considering the cost and size of the additional components I don't see your argument.
But thats my problem ....
As your mind is set, I hope you at least keep us updated on your achievments.

- Sat Jul 23, 2016 2:45 pm #51361 They together are cheaper than getting a 12e.

Did you see this comment ?

"If there is a way to ensure that the full battery is used down to the end and the chips and sensors function correctly and when in light sleep the regulator does not use up the battery I am definitely open to knowing how to do this as it will save time and money. - See more at: viewtopic.php?f=32&t=10909&p=51359#p51359"

Amazing selection of ESP8266 and ESP32 modules can be found here.