Just ran the fade sample program to see what kind output the arduino would produce and testing all the PWM output pins, I didn't get the advertised results. From the o'scope I only get a 0-2.7V peak and a frequency of 975.9 Hz. The data on the website shows 0-5V and according to the analogWrite() th…

PWM Output

cmiyc April 26, 2012, 1:09am 5

You forgot the current limiting resistor, which may have damaged all of the I/O pins that you attempted to connect a LED directly.

Topic		Replies	Views
PWM giving 6.3Vp-p Programming Questions	14	3979	May 5, 2021
Creating my own PWM General Electronics	8	1668	May 6, 2021
PWM voltage decay Programming Questions	6	1682	May 5, 2021
pwm non linear outputs General Electronics	11	1691	May 6, 2021
Arduino analogue out - i am at a loss Project Guidance	15	726	May 5, 2021