---
title: Low Power ESP8266
date: 2018-11-14T12:13:37+00:00
modified: 2019-03-10T17:12:01+00:00
image:: https://kaspars.net/wp-content/uploads/2018/11/trigboard.jpg
permalink: https://kaspars.net/blog/low-power-esp8266
post_type: post
author:
  name: Kaspars
  avatar: https://reverse.kaspars.net/gravatar/avatar/92bfcd3a8c3a21a033a6484d32c25a40b113ec6891f674336081513d5c98ef76?s=96&d=mm&r=g
category:
  - Electronics
  - Home Automation
post_tag:
  - ESP8266
post_format:
  - Link
---

# Low Power ESP8266

Reduced power usage is the main reason for building custom boards with ESP8266 since most of the modules such as [Wemos](https://wiki.wemos.cc/) and [NodeMCU](https://www.nodemcu.com) use power regulators and UART to USB chips that draw a lot more current than the 20μA required by the ESP8266 during the deep sleep. In my own testing with [Wemos D1 mini v3.0.0](https://wiki.wemos.cc/products:d1:d1_mini) the power consumption during the deep sleep was around 18mW because of all the extra components.

[TrigBoard](https://hackaday.com/2018/11/13/low-energy-esp8266-based-board-sleeps-like-a-log-until-triggered/) by [Kevin Darrah](http://www.kevindarrah.com/) is a great example of reducing the power requirements to an extreme.