Learn how to program Arduino with Python using PyFirmata. Step-by-step tutorial with code examples for controlling LEDs, sensors, servo motors & more. No C++ required - start today!

A keypad is one of the most commonly used input devices in microprocessor applications. In a standard keypad wired as an X-Y switch matrix, normally-open ...

In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...