Here is an ultra simple Arduino Night Alarm project ... at its sensor input port. As indicated, our system requires a “Logic High (H)” level input to wake up. The best sensor you can use to detect an ...

Get close enough to this raven and you’ll set off the PIR sensor, which triggers ... 12-volt power LED. This bird’s brain is an Arduino Nano, which is protected from the 12V supply with ...

When something passes in front of a PIR sensor ... sensors and outputs to trigger different effects depending on your needs. The Arduino is capable of driving small loads like an LED without ...