Intruder Detection via SMS (Twilio) using Arduino, PIR & Ethernet Shield

Arduino is the most common open source hardware for implementing cool projects, and PIR is most widely used to detect motion and human presence. More details on how to interface Arduino with PIR. Today we would explain you a step-by-step guide on how you can build intruder detection system using Arduino and receive an alert via SMS. Things you need: Arduino (2560 Mega recommended) Ethernet Shield compatible with Arduino. More details here. Motion Sensor PIR. Internet access to your Arduino First of all, you need to connect your Arduino with Ethernet Shield and check if its working properly. If you are...