Occasionally the sensor orientation can influence its sensitivity. Maybe the small plastic optics ... Following is the Arduino Sketch, tailored for Digispark Attiny85 Development board! /* * ...

The PIR Motion Sensor on the left is made by Parallax ... different effects depending on your needs. The Arduino is capable of driving small loads like an LED without extra components.

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

In the microcontroller era today, Arduino ... 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 intrusion ...

The BOM on [Jeremy S Cook]’s build is extremely short – just a PIR sensor and an optoisolator, with a battery, a plug for the camera’s remote jack, and a 3D-printed bracket. The PIR sensor ...