ESP8266 Community Forum

- Sat Jan 21, 2017 10:21 am #61314 Hi,

nice suggestions. I tried it and it works well!

I think such powering solutions (Batterie 9V or LiPo or LiFePO4) need a notification system, don't they?
It would be so nice to be informed (via mail, push to iPhone or WhatsApp or whatever) when you need to replace battery or recharge your LiPo/LiFePO4. Unfortunately, I can't get this ready. I tried google and tried this getVcc function.

Can someone offer a solution for this?

Wishes,
Mike

- Sat Jan 21, 2017 10:52 am #61315 Hi,

another possibility is using normal batteries (9V rechargeable). You need a cheap step down module. It works and is lightweight. I use it. Such LiPo/LiFePO4 are really nice, I think. I tried those after reading this thread. I like that.

I tried to built a notification system for low battery. I think such mobile solutions need a notification system (mail, SMS, push directly to smartphone, iOS/Android), don't they?

I tried google and getVcc function. Unfortunately, I'm a beginner and it didn't work. Can someone offer such a solution?

Thanks and wishes,
Mike

- Sun Jan 22, 2017 4:11 am #61341 Sorry for double posting. I wasn't aware of this approving procedure in advance. I really am sorry.

- Sun Jan 22, 2017 4:27 am #61342

@piersfinlayson: I found on the interwebz a RT9013 version (the RICHTEK RT9013-33GB) with fixed 3.3V out and 2~5.5V in, which would be perfect for me if only I could find someone selling them

RT9013 is a low dropout linear voltage regulator. It is not an up/down boost/bucket converter!
The min. input of 2.2V is valid for the 1.6-1.2V output versions.