Make your own IoT based home/office security system using the Nodemcu ESP8266 Wifi module, PIR Sensor and Blynk application.

Through this tutorial I made fire alarm notification System Using Iot technology. wherever you are in the world you can get the notification

Calculate distance to a certain object using an ultrasonic sensor. It can be used for car distance alerts, security systems, etc.

Calculate distance to a certain object using an ultrasonic sensor. It can be used for car distance alerts, security systems etc.

Where did I leave my phone? Push a Button and an email will be sent giving you the Geolocation of your phone.