wemos-door-alarm-sensor | WEMOS Wireless DIY door alarm sensor with Home Assistant

wemos-door-alarm-sensor is a C++ library typically used in Internet of Things (IoT), Raspberry Pi, Arduino applications. wemos-door-alarm-sensor has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

This article accompanies the "DIY Door Alarm Sensor" YouTube series. It contains the code, libraries, diagrams, 3D print files and more information that I promised in the videos: [DIY Door Alarm Sensor] The code within main.cpp file is well documented, but I’ll try to explain the concepts and ideas behind the code in this section. But first of all, copy the file secrets_copy.h to secrets.h and edit its content with your details: WiFi credentials, Home Assistant details…​. The sketch begins with the creation of a few objects we’ll need along the way: WiFiClient that we use to connect to Wifi and PubSubClient that we use to send data through MQTT. Then we declare a few variables like the pins used to send the wave and measure the time it take to bounce back, as long as the number of tries we aim to do while connecting to WiFi because we want to avoid draining the battery trying to connect to WiFi indefinitely.