Posted in Arduino Hacks, Holiday Hacks, Software Hacks Tagged arduino, HC-SR04, Parallax Ping, ultrasonic, ultrasonic distance sensor Make Your RC Car Drive Itself With This Simple Brain Swap ...

Ben Heck's been busy -- again. In the latest episode of his bi-weekly show he puts his considerable brain power to work on cycle safety. He uses Parallax ping sensors connected to an Arduino to ...

The trigger distance is controlled by an Arduino and a Parallax Ping))) sensor so as to fire only when people are farther than 3 feet but closer than 5 feet.