Some Questions (PID parameter, PWM, IMU_PRESS_SENSE) FW 7.0

[Florian75]

Hello,

i have 4 questions concerning the FW 7.0 rev. 373 b1706 (for the new DIMU):

1. The default PID-Parameters are different to former fw-Versions. Do i have to start with the new parameters or should i take my old values? Is there a change in the PID-Controller?

2. I use a PPM-Signal to control my copter. There is a new parameter "Arm PWM" what can i do with this value? I tested some values but i can't see the sense.

3. My ESC32 are controlled by PWM. With the new FW the AQ generates a PWM only in ARMED Mode (I can see this with a Scope). So the ESC32 are flashing red while the AQ is in DISARMED Mode. Can i change this with an parameter or is this a new intention?

4. I use the new DIMU. I found in my parameter list a parameter "IMU_PRESS_SENSE=0". Do i habe to change the value to "1" if i want to use the new Sensor?

Thanks for your help.

regards
Florian

[rput]

Definitely not use the old values for the PID. I made that mistake and had to rebuild....

I wonder too about your question #4 as it may explain why my LOG_ALT_PRES seems to follow the GPS instead of the pressure sensor readings.

[joebar.rc]

[Florian75]

Thanks for your answers.

Why does the AQ gives no PWM to the ESC32 in DISARMED Mode? It is a little bit confusing.

Any hints for my question #2?

regards
Florian

[sandmen]

Why you need a PWM Signal on esc when it's not armed?

ARM PWM ? Can not find this Parameter.

[Florian75]

[bluuu]

Green LED - ARM
Blinking RED indicate no PWM on input.
Try to ARM, then you can see green led.

[Florian75]

Hello,

@bluuu
Thanks for your answer. It works, this is not my problem, but its confusing compared with the old version

now i have another question to Question #1:

Why are the PID Values so different?
The New default value for DEFAULT_CTRL_TLT_RTE_D is 34600 in an older Version it was 7180. And why are some Max. Values lower than one PID Value (CTRL_TLT_RTE_DM = 9999 , CTRL_TLT_RTE_D = 34600) If the DMax Value should limit the D Part of the PID-Controller, why is the D Value higher than the DMax value???

regards
Florian

[Florian75]

[chschmid]

Sorry Florian I can not answer the "why" question. But it works.

Cheers
Christof