Uploaded July 2011 | Updated September 2026, 10 hours ago
I've been experimenting with using the 555 timer to generate PWM audio, but I knew that the Arduino could also do PWM. So, I decided to make a small test: I recorded a second of audio at 8000Hz, and then stored it in the Arduino program memory. Each byte then gets sent to the PWM output, which modulates an LED. It works!
I've been experimenting with using the 555 timer to generate PWM audio, but I knew that the Arduino could also do PWM. So, I decided to make a small test: I recorded a second of audio at 8000Hz, and then stored it in the Arduino program memory. Each byte then gets sent to the PWM output, which modulates an LED. It works!
