PiFM on pandora

[joachim]

Here were some freaks

http://icrobotics.co.uk/wiki/index.php/Turning_the_Raspberry_Pi_Into_an_FM_Transmitter

who stimulated a GPIO to make a Radio out of Raspi.

Is it possible (I guess yes) to do the same with pandora?

And if, will someone do it for us ?

 

[WizardStan]

Maybe. The Pi has hardware that generates a clock pulse on a GPIO pin and you can get a radio signal by just tweaking that clock pulse ever so slightly. I don't know if the OMAP has similar capability. If it doesn't, the only way to do this would be to use the CPU to manually pulse the ping at 100Mhz. An on/off loop would need at least 2 cycles, sapping 200Mhz away from the CPU before even getting into music modulation. The timing would be almost impossible to get right.

So if the OMAP has a clock-signal-on-GPIO similar to what the Pi has then it should be easy. If not then it'd be difficult enough to simply say no.

I'll have a look at the OMAP3 documentation and see if I can find such a clock.

 

[slaeshjag]

Yeah... FM modulating a square wave without any filters at all... I can't think of a single country that would be legal in

 

[moxie]

But who wants "legal" when you can have "fun"?