Analogue-sequencer

> Maybe it's possible to use some of the F1-F3 buttons to do a 
> fine tune on the currently dialed-in tempo?

The only practical restriction on the fineness of the tempo setting 
is the interface - the knob only has 128 positions.
The value that defines the period of the 48ppqn clock is generated 
by a 16 bit timer with a resolution of 1 microsecond. There's a 
table of 2 bytes for each tempo that holds the clock period in 
microseconds, and 1 byte that holds the numeric value of the tempo.
So fine-tuning the tempo is somewhat tricky - I'd need to either 
calculate the 16 bit timer value from the tempo, and use more bits 
to represent the tempo, or just interpolate between the lookup table 
values based on a fractional part of the tempo. But with the 
remaining code space so limited, this might not be the most popular 
use of what's left.
I reckon syncing your P3 from a more accurate tempo source would be 
the best bet if you want it to lock to audio tracks.

Maybe the current tempo map could do with some tweaking though.
What tempo ranges do people use ?

Cheers,
Colin f