I have received a new board from Banggood now everything is working.
i will replace the mosfet sometime and test it again just to be sure the mosfet is the troublemaker.

@thcfoeyogramma

I think the mosfet on the board is short
also see this topic
http://forum.eleksmaker.com/topic/574/spindle-max-rpm-permanently-milling-cutter-motor/32
I.m still waiting for a new board from banggood

@Zax
Thanks Zax next job convince Banggood to send a new board before i can join the burn club

Okee , i connected D11 to ground with Nano out , no result still max output

it is still running When i take the nano out so i believe the mosfet is failing.

i can do the measurement with an oscilloscope
Anyway i think i can make the conclusion that the board is broken.
There is a mosfet IRLR120N on the board is this one responsible for the motor output?
Are there somewhere schematic drawings available ?
I can ask Banggood for a new board and in the meantime try to find out what is wrong with this one

I have measured on the motor output always 12VDC and on the laser output 12VDC and 0 vdc to 3.7 vdc depending on the settings
the laser output looks good to me but the motor output is always high at 12VDC
the motor output is also used by the 500mw laser

I installed Grbl 1.1E and how do you want me to reset the machine?

hello Zax no one at the time
first I tried Elekscam and after that i installed the ts2 lasersoftware and tried this both will not stop the laser or spindle.

Hello sheynar
i have just purchased the Eleksmill at Banggood
I'm facing the same problem spindle motor or laser running permanently
I tried the commands M3 SO in elekscamv3.1 with Eleksrom 3.8 firmware but no reaction
in ts2 laser with gbrl 1.1 spindle off doesn't stop it either,
I also believe it is a hardware problem,
did you already solved it and how? new board or new mosfet ?