[gnea/grbl-Mega Issue#166] Sg90 on mks base 1.6 with grbl

#1 – fra589 于 2022-11-10

Grbl doesn’t have code to drive servo.
You need to use another firmware like Marlin to do this.
@++;
Gauthier.

#2 – alexc57 于 2022-11-10

It s strange I see many informations about that.

#3 – fra589 于 2022-11-10

Some modified versions exist to use servo (https://github.com/robottini/grbl-servo, https://github.com/cprezzi/grbl-servo, …), but they are no servo function in the original (this one) Grbl version.

Another infos here:
– https://www.instructables.com/How-to-Control-a-Servo-Using-GRBL/
– https://www.google.com/search?q=grbl+servo

@++;
Gauthier.

#4 – alexc57 于 2022-11-11

I have try this also, google is my friend…
but all it s for ATmega328p, but not for my board.
if you had another idea

#5 – fra589 于 2022-11-11

I don’t know if they work, but try this:
https://github.com/botio/grbl-Mega-servo
Or this:
https://github.com/alnwlsn/grbl-Mega-5X-alnwlsn

@++;
Gauthier.

#6 – alexc57 于 2022-11-11

thanks a lot but doesn’t work, it is not the same board

#7 – fra589 于 2022-11-11

You can remap the IO pins to make the soft suitable to your board…
https://github.com/fra589/grbl-Mega-5X/wiki/Pinout-mapping-in-cpu_map.h

#8 – alexc57 于 2022-11-11

Thanks a lot for that. In my mks base I don’t have pin (I/o) for spindle!
To you think a can attribute another pin as you explain? Like (OC1A/PCINT5)PB5? For example ? Thks