Looking for a simple circuit to control the light intensity of Light Emitting Diodes (LEDs) or similar lighting sources? Here is an Arduino based circuit with three independent pulse width modulated ...

This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

Instead of the relative horror of driving 40 LEDs with a single Arduino ... To actually power and control the entire circuit, [Martyn] used an Arduino loaded up with a program based LedControl ...

You can salvage some nice motors out of optical drives but they can be tricky to control ... circuit uses six 2N2222 transistors to protect the Arduino from excessive current. You can see six red ...

Likely applications are button designs and proximity sensing. The kit’s board also includes ... The kit works as a stand-alone unit and as an Arduino-compatible shield. It can be used to add a ...