First, upload the following PWM sketch to your Arduino Uno r3/Nano v3 and connect a 10mm water-clear green LED to D9. const int ledPin = 9; // Test LED wire to D9 void setup() { // Set the pin as a ...

An Arduino drives the switch-mode power supply, offering dimming thanks to PWM, ... iv used 12 * 3w 6500K white led,s and 4 * 3w rgb LEDs, the upshot of which my arduino ...

The dimming effect is achieved using PWM provided by an Arduino UNO board. The DIM pin can be driven by an external DC voltage between 0.5V and 2.5V. If the voltage is higher than 2.5V the output ...

Pulse Width Modulation is definitely the preferred method of dimming an LED with a microcontroller, but we were interested in hearing about a different method called Binary Code Modulation. BCM doe… ...

Put your LED in the collector circuit and connect anode to your PWM signal. (Easier to describe with a sketch, but I think I have it). The emitter of the transistor is 5-0.7V, so about 4.3V this means ...

The PWM dimming frequency must be above 120 Hz to comply with Energy Star requirements by avoiding visible flicker. Alternatively, LEDs can be dimmed by reducing the dc current.