The LDR must be soldered in a way that it can comfortably see ambient light through the Fresnel lens. The tiny microcontroller brain. To be frank, using a microcontroller is probably overkill for most ...

While motion sensors are quite popular, ... For example, the DIYables LDR circuit can be used with Arduino boards, Raspberry Pis, or other SBCs.

You can modify this setup to drive external audio/visual annunciators/devices as desired. Following is the Arduino Sketch, tailored for ... (PIR) motion sensor modules and was looking for a new one to ...

At one end is an LED and at the other the LDR, and when attached to a glove it provides a finger sensor without the fuss. ... and with a simple divider circuit a voltage can be read by an Arduino.

Using motion detectors and an Arduino you can trigger lights, ... The PIR Motion Sensor on the left is made by Parallax and sold by Radio Shack. The one on the right comes from Sparkfun.

Makers and developers looking for a motion sensor Arduino Shield, are sure to be interested in this new ICU-Duino which has been created by Patrick Thomas Mitchell based in Ottawa, Canada ...

If you've always wanted to try to build an Arduino project, this may be a great way to start. Matt Williamson built a tiny, Arduino-based motion sensor that will SMS you when something moves by ...

When everything’s plugged in, this is how your Arduino, motion sensor, and power relay should look. Jeremy S. Cook. Plug the male-to-female jumper wires into the motion sensor pins.