layout title permalink sequence references default References /references 10 topic list Similar projects name url Shelly H&T is a Battery Powered ESP8266 WiFi Temperature & Humidity Sensor https://www.cnx-software.com/2018/10/30/shelly-ht-battery-powered-esp8266-wifi-temperature-humidity-sensor/ topic list ESP8266 name url ESP12-E pinout https://simba-os.readthedocs.io/en/latest/_images/esp12e-pinout.png name url WeMos D1 mini 2015 schematic https://escapequotes.net/wp-content/uploads/2016/02/wemos-d1-mini-shematics.jpg name url WeMos D1 mini pinout http://esp8266-server.de/dateien/wemos/D1-mini-pinoutKl.png topic list Sensor <code>Si7021</code> name url Si7021 Adafruit Breakout board schematic https://cdn-learn.adafruit.com/assets/assets/000/035/932/original/temperature_schem.png name url Si7021 SiLabs datasheet https://www.silabs.com/documents/public/data-sheets/Si7021-A20.pdf name url Adafruit Si7021 Temperature & Humidity Sensor Breakout Board https://www.adafruit.com/product/3251 name url Arduino library for Si7020 and Si7021 environmental sensors https://github.com/LowPowerLab/SI7021 name url MINI Si7021 Temperature and Humidity Sensor http://www.instructables.com/id/MINI-Si7021-Temperature-and-Humidity-Sensor/ name url ESP8266 and Si7021 temperature sensor example https://www.esp8266learning.com/esp8266-si7021-temperature-sensor-example.php topic list Shift register <code>SN74HC595</code> name url SN74HC595 TI datasheet http://www.ti.com/lit/ds/symlink/sn74hc595.pdf name url 74HC595 pinout https://learn.pimoroni.com/static/repos/learn/170pt-projects/pinout-74hc595.jpg topic list Coin cell name url Shelly H&T is a Battery Powered ESP8266 WiFi Temperature & Humidity Sensor https://www.cnx-software.com/2018/10/30/shelly-ht-battery-powered-esp8266-wifi-temperature-humidity-sensor/ name url ESP8266 Sensor runs 17 days on a coin cell https://www.youtube.com/watch?v=IYuYTfO6iOs name url How to build an open WiFi finder using ESP8266 and two coin batteries https://medium.com/@kstevica/how-to-build-an-open-wifi-finder-using-esp8266-and-two-coin-batteries-9c31eb6f9859 name url How to Run Your ESP8266 for Years on a Battery https://openhomeautomation.net/esp8266-battery/ topic list Battery shield name url WeMos battery shield https://arduinodiy.wordpress.com/2017/01/02/reviewing-the-wemos-battery-shield name url Power usage of WeMos and battery shield http://harald.studiokubota.com/wordpress/index.php/2016/08/20/power-usage-of-wemos-d1-mini-ws2812b-rgb-shield name url Battery shield docs and schematic https://wiki.wemos.cc/products:d1_mini_shields:battery_shield name url WeMos lithium battery shield https://www.youtube.com/watch?v=z6Vgy1cY0XU name url Monitoring LiPo battery voltage with Wemos D1 minibattery shield and Thingspeak https://arduinodiy.wordpress.com/2016/12/25/monitoring-lipo-battery-voltage-with-wemos-d1-minibattery-shield-and-thingspeak/ topic list Programming name url ESP8266 pogo jig programming https://hackaday.io/project/20046-esp8266-pogo-jig-programming-board topic list Design tools name url Creating an FPGA Power Tree https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/an/an-721-creating-fpga-power-tree.pdf name url System-Level Design Tool Quick Start Guide https://www.analog.com/media/en/technical-documentation/user-guides/ltpowerplanneriii_qsg.pdf topic list Low power name url ESP8266 Low Power Solutions https://www.espressif.com/sites/default/files/9b-esp8266-low_power_solutions_en_0.pdf name url ESP8266 Maximum deep sleep i ~71 minutes https://www.losant.com/blog/making-the-esp8266-low-powered-with-deep-sleep name url Extend ESP8266 12 F Deep Sleep Time https://electronics.stackexchange.com/questions/306374/extend-esp8266-12-f-deep-sleep-time