PID settings for EXT_MOTOR_RANGE

[crashlander]

Hello.
Question for those that are using EXT_MOTOR_RANGE! What are some workable PID settings for different kind of setups?
If I understand correctly we have now 2 different kinds of EXT_MOTOR_RANGE types: on ProMini we have 8bit PWM from 2 to 254 (252 steps(, and on mega we have 16bit PWM (??steps)?!

Regards
Andrej

[ronco]

Hi,

in dev 225 there is just EXT_MOTOR_RANGE witch changes the signal range to near ~0 - 2ms. it can only be used with reflashed ESC's viewtopic.php?f=13&t=516

mega and promicro have some 11 & 16 bit timer active now but MWC uses just 11 bit intern (witch is enough) so



without EXT_MOTOR_RANGE

promini:
- motor 1-4 HW PWM 8bit (7used) = 125-250 (1-2ms) == 125 steps resolution
- motor 5-8 SW PWM 8bit (8used) = 5-245 (1-2ms) == 240 steps resolution <- isnt better then HW PWM eaven with higher resolution

promicro
- motor 1-4 HW PWM 11bit (10used) = 1000-2000 (1-2ms) == 1000 steps resolution
- motor 5-8 SW PWM 11bit (10used) = ~1040-~1960 (1-2ms) == ~920 steps resolution

mega
- motor 1-6 HW PWM 11bit (10used) = 1000-2000 (1-2ms) == 1000 steps resolution
- motor 7-8 HW PWM 8bit (7used) = 125-250 (1-2ms) == 125 steps resolution

with EXT_MOTOR_RANGE

promini:
- motor 1-4 HW PWM 8bit (8used) = 2-252 (~0-2ms) == 250 steps resolution
- motor 5-8 SW PWM 8bit (8used) = 5-245 (1-2ms) == 240 steps resolution

promicro
- no support for EXT_MOTOR_RANGE atm.

mega
- motor 1-6 HW PWM 11bit (11used) =16-2016 (~0-2ms) == 2000 steps resolution (MWC dont uses more then 1000 atm.)
- motor 7-8 HW PWM 8bit (8used) = 2-252 (~0-2ms) == 250 steps resolution


regards

Felix

[Stalk]

And where we can define EXT_MOTOR_RANGE?
Thanks you for reply.
regards
Stanley

[Hamburger]

If and only if you have these reflasehd ESCs

Code: Select all

#define EXT_MOTOR_RANGE

in config.h
You can about double P for roll and pitch to start with.

[ronco]

hi Stanley, you are right there is no entry in config.h for it ...

but you can do it with wirite

Code: Select all

#define EXT_MOTOR_RANGE


to it


regards

felix

[p25o1]

hi everyone,

i just have a question about the EXT_MOTOR_RANGE option,

i posted the same question here

viewtopic.php?f=8&t=2024

i missed this post.

i'm using a quadrino zoom rev 1e which is based on the Nano ATmega328

can it support the EXT_MOTOR_RANGE option, and if no why?

if i enable this option , do i need to re calibrate my escs?

thx everyone

[Hamburger]

hi Stanley, you are right there is no entry in config.h for it ...

ah, but it is.
It is right at the beginning of section 7 in config.h

[Hamburger]

Hello.
Question for those that are using EXT_MOTOR_RANGE! What are some workable PID settings for different kind of setups?

Andrej,
as rule of thumb I found I can double the P for nick&roll when converting to mwii-esc. On my TRIs with mwii-esc flashed ESCs I have P at 7 to 8.

[crashlander]

hi everyone,

i just have a question about the EXT_MOTOR_RANGE option,

i posted the same question here

viewtopic.php?f=8&t=2024

i missed this post.

i'm using a quadrino zoom rev 1e which is based on the Nano ATmega328

can it support the EXT_MOTOR_RANGE option, and if no why?

if i enable this option , do i need to re calibrate my escs?

thx everyone

Hello, it seems somebody resurrected that old post
@p25o1 like it was said before you can use extended motor range ONLY WITH SPECIALY PROGRAMMED (REFLASHED) ESC, and of course than you don't need to calibrate ESC's because they are already calibrated.

Regards Andrej

[p25o1]

i have simon Flashed esc,,, will they do the job/work?

i enabled the option it but the motors didn’t work initially.

after applying full throttle they started to spin,

i'm asking since i see in the code

with EXT_MOTOR_RANGE
"promicro
- no support for EXT_MOTOR_RANGE atm."

i just wanted to know if this is a hardware limitation , or it will come in time/development .