Pid loop frequency

[uneven parrot]

Is there a way to increase the pid loop because mines is stuck at 4 khz and I would like to know if there is a way to increase it. Thank you

[tulip cypress]

On F411/F405/F435/G473 it's best to keep it at 4k to prevent issues relating to CPU overload

[uneven parrot]

I didn't expect a reply this fast 😅 Thank you

[upbeat tundra]

F722 too, I've heard.

@uneven parrot And with a 4 kHz PID loop comes DSHOT300, as DSHOT600 doesn't offer any benefits at that rate.

[uneven parrot]

Yea I have radiolink f722. Thank you

[tulip cypress]

F722 is on the edge, it's generally good to keep it lower, but you can experiment with different settings and see how it affects CPU load

[upbeat tundra]

Yeah I couldn't arm my quad in the field until I lowered the PID loop to 4 kHz.. AFAIK I didn't have much fancy options, unless GNSS/RTH is enough to help the CPU over the edge..

[unkempt summit]

Definitely no 8kHz/DSHOT600 on F722 with bidirectional DShot enabled. And you want bidirectional DShot enabled, as it reduces filter latency by milliseconds, versus the microseconds a faster PID loop rate gets you.

[upbeat tundra]

Aaah yes, I also had bidirectional DSHOT enabled. Of course. That was probably it.