![]() Each time through the loop, it increases by the value of the variable fadeAmount. In the sketch below, the PWM value is set using a variable called brightness. In order to fade your LED off and on, gradually increase your PWM value from 0 (all the way off) to 255 (all the way on), and then back to 0 once again to complete the cycle. ![]() The analogWrite ( ) function that you will be using in the main loop of your code requires two arguments: One telling the function which pin to write to, and one indicating what PWM value to write. Connect the cathode (the shorter, negative leg) directly to ground.Īfter declaring pin 9 to be your ledPin, there is nothing to do in the setup ( ) function of your code. Hardware RequiredĬonnect the anode (the longer, positive leg) of your LED to digital output pin 9 on your board through a 220 ohm resistor. ![]() AnalogWrite uses pulse width modulation (PWM), turning a digital pin on and off very quickly with different ratio between on and off, to create a fading effect. ![]() This example demonstrates the use of the analogWrite() function in fading an LED off and on.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |