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TudbuT / picoAM

A simple but capable AM transmitter for the Raspbery Pi pico!
GNU Affero General Public License v3.0
30 stars 1 forks source link

[Feature Request] Adjustable frequency #3

Open austrisu opened 8 months ago

austrisu commented 8 months ago

Would it be possible to modify the transmission frequency or for some limitation it can be only 1,557MHz ? And what would be the frequency range? I imagine hooking up some potentiometer to adjust the frequency and have some screen to display current frequency.

TudbuT commented 8 months ago

Changing the frequency requires changing the processor clock along with the desired PWM frequency to get a good match due to the limitations of the PWM circuit's clock dividers. Making it adjustable would require quite a lot of logic to self-tune, but it would be possible by changing the CPU clock on the fly.