“In this guide we are going to build and control an external LED dimming system. With the available buttons, the user can dim the LED bulb to any desired brightness. The system uses the Basys 3 board, and it is connected to a breadboard that contains a resistor and the LED bulb. Pressing the designated “up” button will increase the brightness, and pressing the “down” button will decrease the brightness all the way to zero. Not only does this prevent the user from being blinded by bright-as-the-sun light bulbs but it also conserves energy!”