int inputPin = 7; // choose the input pin (for PIR sensor) ...

This project is a cost-effective, motion-activated surveillance camera using an ESP32-CAM module with Blynk-based notifications for real-time monitoring. The system detects motion using a PIR sensor, ...

Normally these speed sensors work with radar or laser technology to bounce back radio waves or IR light from objects and calculate speed based on time taken for the light or wave to reflect. In this ...

The UNO is one of the most popular boards in Arduino family and a great choice for beginners. Ultrasonic Sensor: These are the sensor that use ultrasonic waves to detect objects or to measure the ...

Choose one that targets your skincare goals. Whether you’ll use it regularly Because LED face masks are so expensive, make sure you’re interested enough in using it to commit to the amount of ...

CES 2025 showcased advances in power and size savings, from energy-harvesting solutions to tiny sensors for wearables and highly integrated wireless SoCs ... The in-dye indoor PV cell is optimized to ...

Nobu Teranishi, Albert Theuwissen and Eric Fossum, who between them made key breakthroughs in the development of both CCD and CMOS sensors, have collaborated on an article for the open-access "Annual ...

At the end of a revolution, it triggers a hall sensor which resets the circuit. The best thing about this design? It’s been in service for ten years. [Larry’s] original video is a big contrast ...

Humidity sensors are essential to regulating many indoor and industrial environments. Fang Liu, Jin Hon, and colleagues develop a humidity sensor using graphene oxide quantum dots (GOQDs ...

Sensify is a new technology that can turn Zigbee switches, bulbs, and plugs into sensors with a firmware ... superior” to passive infrared sensing (PIR) tech, which is traditionally used for ...