Reed Door Sensor (battery powered ESP32 with esphome(yaml)) - ESPHome - Home Assistant Community
ESP8266 as Window Sensor with years of battery life - YouTube
ESP8266 Voltage Regulator For LiPo and Li-ion Batteries | Random Nerd Tutorials
Battery-Powered ESP8266 Sensor? Never Been Simpler | Hackaday
Troubleshooters Needed ESP8266 MailBox Notify - Need Help With My Project - Blynk Community
Amazon.com: HiLetgo 1PC ESP8266 NodeMCU CP2102 ESP-12E Development Board Open Source Serial Module Works Great for Arduino IDE/Micropython (Small) : Electronics
Building the Hardware | DIY ESP8266 Home Security with Lua and MQTT | Adafruit Learning System
LEIDS - Low Energy IOT Door Sensor : 8 Steps (with Pictures) - Instructables
Battery Powered ESP-01 Temperature Sensor - Technology Spy
Esp01 Battery drain deepsleep - Everything ESP8266
Reed Switch Tutorial for Arduino, ESP8266 and ESP32
My Door Sensor (Revised Design) Breakdown and Upgrades - YouTube
Window/Door Sensor - battery powered with relay or FET for backup - Project Guidance - Arduino Forum
ESP32 Low Power Device Design - Part 1 - Squix - TechBlog
One ESP8266, One Battery, One Year… And Counting. | Hackaday
low power - How to turn on module like ESP8266 only when switch is activated? - Electrical Engineering Stack Exchange
ESP 8266 Mailbox Notifier using DeepSleep and Blynk
ESP8266 (esp-07) powered by battary(s) for at least 1 year | Electronics Forums
NodeMCU based door sensor with power sleep mode.
Easy battery powered Mailbox Door IoT sensor using ESP32 ← ABrandão.com
ESP8266 NodeMCU Door Status Monitor with Email Notifications (IFTTT) | Random Nerd Tutorials
ESP 8266 Mailbox Notifier using DeepSleep and Blynk
ESP8266 NodeMCU Door Status Monitor with Email Notifications (IFTTT) | Random Nerd Tutorials
Nodemcu external power - won't start? - Everything ESP8266
Making a simple door sensor from ESP8266 - John's Tech Blog
DIY low powered esp8266 door/window/mailbox sensor - Share your Projects! - Home Assistant Community
arduino - Latching circuit for ESP8266 with coin cell and Reed Switch - Electrical Engineering Stack Exchange
GitHub - 8n1/ESP8266-Tiny-Door-and-Window-Sensor: Battery powered door and window sensor with ultra low standby power. Arduino, ESP-12, Reed switch, ATtiny, LDO
