PIR Sensor: Input sensor for program: PIR (motion) sensor: Link: $9.95: Relay: Lets us power high voltage devices with low voltage Arduino: SparkFun Beefcake Relay Control Kit: Link: $8.95: Fan: ...

Code explanation of the Arduino PIR Interfacing. The code explanation of the code is as follows. The complete code can be found at the absolute bottom of the blog. const int pirPin = 5; This line ...

A 5V single-pole, double-throw (SPDT) relay used to control the load (230V AC, 60W bulb) acts as a switch. The 5V power supply is connected to the 5V (Vin) and GND pins of the Arduino Nano to enable ...

Working from home with regular video meetings has its challenges, especially if you add kids to the mix. To help avoid embarrassing situations, [Charitha Jayaweera] created Present!, a USB device t… ...

Once connected successfully, you can control your circuit from Cayenne platform on the PC or by using Cayenne app on Android device. In our case, the circuit consists of a PIR motion sensor and a ...

Interfacing a Bare PIR Sensor with Arduino – Can It Be Done. Posted: June 23, 2025 | Last updated: June 23, 2025. Hi, I'm Bill. I'm a software developer with a passion for making and electronics.