ESP8266 Community Forum

- Thu Sep 12, 2019 2:38 am #83763

It hasn't have a usb serial so that's no problem.

What SparkFun Thing do you have, since the one I know has a USB-UART convertor on-board.

But still if you read about the esp8266 and deepsleep you find that people can power it for weeks when I only get to power it for under a week.

(Most of) these projects don't use a development board like the SparkFun Thing, NodeMCU or Wemos, but a single ESP module (like an ESP-01 or ESP-12) combined with it a low external component count (like drivers for I/O) and an optimized low-loss DC-DC convertor.

Assumption is the mother of all f*ckups; I should know: I've been assuming a lot.
When you're new, don't start with a separate ESP (ESP-01 to ESP-14) module.
Get yourself a proper development board: NodeMCU - WeMos D1 - WeMos (UNO form factor) - Witty Board
ESP power requirements are 3.3V±10%@350mA
The ESP8266 IS NOT 5V tolerant on ANY pin (see item 5.14 on page 25 of the FAQ)

- Thu Sep 12, 2019 2:42 am #83764 you're talking about the 'sparkfun thing dev' the normal thing doesn't have a usb serial converter.
Here's a post about the Thing and deep sleep https://openhomeautomation.net/esp8266-battery

- Thu Sep 12, 2019 8:19 am #83769 again:
did you check it is going into deepsleep?
did you check the onewirebus is not going low in depsleep and drains the battery via the pull-ups?
is there any other "periphery" connected?
what arduino esp-core versions are you using?

my "weather-sensor" runs on one 1600mAh LiFePO cell for appr. one year with 15min intervals

- Thu Sep 12, 2019 8:24 am #83770 It's going into deepsleep
I still need to change the onewire to parasitic mode
There's nothing else connected
I'm using Espressif 8266 version 2.2.3