Proof of concept door alarm


About This Project

First project using the Android App. A proof of concept of an alarm than notifies me via email when a door is opened. Still needs to be set up to be battery powered but the concept works.

The capacitive touch sensor is attached to digital pin 2 of the arduino and Cayenne reads that input and inverts it. When the door is closed the magnet is near enough to the capacitive touch sensor to give a logic high level. This is inverted by cayenne so while the door is closed, cayenne outputs a 1. When the door is opened, the magnet moves away from the sensor, the capacitive touch sensor outputs a 0, so cayenne outputs a 1 and triggers the notification.

What’s Connected

Cayenne, Arduino Uno, Ethernet Shield W5100, TTP223B capacitive touch sensor, magnet, sticky tape, jumper wires, breadboard.

Triggers & Alerts

When door is open (cayenne output is 1), send email notification.

Dashboard Screenshots

Photos of the Project


can you provide me the code for TTP223 Based Capacitive Touch Sensor Module?? i am not able to interface