Making a motion-controlled lamp using ultrasonic sensors

HC-SR04 is an inexpensive ultrasonic sensor module readily available in market these days and is extensively used in robotic applications for sensing and ranging the obstacles. With a proper arrangement of multiple ultrasonic sensors, it is possible to detect motion and its direction too. This motion-controlled ultrasonic lamp project uses three HC-SR04 sensor modules in an array to detect a waving hand in front of them and rotates the lamp to adjust its position according to the direction of motion of the hand.

Motion-controlled lamp

Motion-controlled lamp

Real-time GPS tracking device for vehicles

Check out Cooking Hacks Arduino-based GPS tracker project for vehicles that could be extremely helpful to pinpoint the exact location of the vehicle in case it is stolen. The project uses a GPS+GPRS shield with an antenna to locate the coordinates of the vehicle. You need to call the device from your preset phone number, which will be verified by the SIM908 module on the tracker, and it will then send you an SMS with the GPS coordinates of its location.

GPS tracker for vehicles

GPS tracker for vehicles

Another IR controlled light switch

Vadim Panov’s new project is about an IR controlled light switch that operates with any RC-5 compatible TV remote. His switch is built around the ATTiny2313 MCU clocked at 8MHz. The IR receiving part is designed for decoding the 36KHz modulated IR signal using the TSOP1736 device.

IR controlled light switch

IR controlled light switch

The thing I came up with at the time was a light swich for my room controlled over an IR remote from TV. Remote that I had used RC-5 protocol, hence the firmware is suited for any RC-5 compatible remote.
Everyone is familiar to the everliving problem with switching the lights off in your room before going to bed and stumbling back across the room. The IR switch I describe here solves that problem, and I can definitely tell that this project was a success – I am still using it with no regret.

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