and use the “analogWrite” command to control the duty cycle, as shown in the below experimental sketch prepared for Arduino and ATtiny85: int PWM_pin = 9; // LED pin for Arduino Uno (D9) //int PWM_pin ...

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 ...

Planning another Arduino build? If you’re just doing something simple like switching a relay or powering a LED, you might want to think about the Digispark. It’s a very small ATtiny-based ...

Whenever a valid key is swiped, the Arduino triggers a relay which can then be used to control just about anything. In this case, [Jason] plans to use it to control his garage door. The system ...

The tiny Nanite 85 Arduino development board was created as a fun project after its creator Tim had seen the Digispark and, subsequentally, the Adafruit Trinket were announced.