Multi-purpose Sensor/Relay Combo

Overview

I wanted to create a small and portable multi-purpose box with a motion and temperature sensor that would turn on/off a power relay. This would allow me to take it anywhere and "reprogram" it from mobile with Cayenne.

Some possible uses

• Set up an SMS/email alert in the presence of motion

• Turn on/off a heater when the temperature changes

• Turn on/off a lamp when the sun rises/sets

Connections

This is very basic, but there are many uses for a device with these sensors.

• The temperature and motion sensor and relay are connected to my Raspberry Pi

• My Raspberry Pi is connected to Cayenne

Project Photo

Photos including my dashboard screen