I2C DAC? SPI DAC? Parallel interface DAC?Atmega2560 itself does not have a DAC.
Run it thru an RC lowpass filter.Here's PWM, from 0-25-50-75-100-125-150-175-200-225-250 with 10K resistor and 4.7uF cap.Or may 4.7K resistor and 10uF cap, I forget which.http://sim.okawa-denshi.jp/en/CRlowkeisan.htmYou may want different values depending on what frequency response you want to achieve.
Please enter a valid email to subscribe
We need to confirm your email address.
To complete the subscription, please click the link in the
email we just sent you.
Thank you for subscribing!
via Egeo 16