Kristian Lam wrote:Hi Stu,
While S.Bus does use 11-bit values, we only care about the 8 most significant bits.
thanks for that Kristian
but - I think this is important - that still means sending an 11 bit value (ie 1023 as opposed to 123) to the camera from the controlling device
even if its truncating the values back down to an 8 bit range, you still need to essentially give it the bigger number to start with
I appreciate that if you might be setting bit values directly this maybe seems trivial but it still seems to me that its very open to people misinterpreting that information, if they are likely to be coding using decimal integers
eg:
0123 decimal is 00001111011 (11 bit binary) - losing the 3 least significant bits = 00001111
1023 decimal is 01111111111 (11 bit binary) - losing the 3 least significant bits = 01111111
BIG difference
its a shame it doesn't use all the precision though practically this maybe only affects the theoretical granularity of the focus adjustments possible
does this mean that PWM is arguably better than SBUS on that basis? or is the PWM signal being sampled to 8 bit as well?