The latest arduino zero board files (1.6.7 and up) have a much lower PWM frequency than previous versions (732.4Hz , down from 187.5kHz). This causes audible hissing when used with the Mechaduino. We added the analogFastWrite command to provide 187.5kHz PWM to eliminate this issue.
The latest arduino zero board files (1.6.7 and up) have a much lower PWM frequency than previous versions (732.4Hz , down from 187.5kHz). This causes audible hissing when used with the Mechaduino. We added the analogFastWrite command to provide 187.5kHz PWM to eliminate this issue.