ESP8266 Community Forum

- Fri Apr 03, 2015 1:37 pm #13392 I can probably get less current draw too - it's mostly burned in a pull-up resistor that can be a bit higher if need be. With 1.5uA the thing alreadly will last for years, so I think it's good enough. No need to be better than the self-discharge rate of the battery Also, for e-ink, you may be interested in this: http://spritesmods.com/?art=einkdisplay

- Sun Apr 05, 2015 2:52 pm #13593 This boost circuit looks like it would work to get the ESP8266 running off from a single cell battery.

http://spritesmods.com/?art=ucboost&page=3

It has the button for start, the boost to 3.3V and the soft power off. All done with cheap parts since the MCU is used to keep the boost running.

Where I get my modules

- Sun Apr 05, 2015 7:49 pm #13606 How much power did it take to get it initially setup?
How much power does a button push need?

Based on those, how big a battery does it need to be useful?

Where I get my modules

- Mon Apr 06, 2015 4:10 pm #13677 Hehe, that boost converter is mine I'd use an off-the-shelf dc-dc-chip in this case; I don't think my design could source the 300mA spikes the ESP can sink on startup.

It looks like that the ESP eats up about 0.4Ws per button press, on my non-encrypted WiFi network connecting to a local server that is. If it's possible to completely drain the 180mAh battery that I use now, that should mean several thousand button presses can be done before the battery needs charging/changing.