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The frequencies from 1Hz to 10Hz are very low and the PWM might not be able to generate such signal. There was a similar question in another thread and the suggestion was to try a different approach, please check the thread, it might be interesting for you: Re: PWM from linux GPIO
The following thread might be interesting for you as well: Re: setPwmI2C not working on Gen2. There is a code to set a pwm signal using the Arduino IDE. You can change the frequency of the signal with that code however you won't be able to get a frequency as low as 10Hz.
I hope this information has been useful for you.