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Hello, im feeding 10,2 V in to the AH1 and negative at the AL1 but I can only get about 3,3V out from AO1 ??

What are your spindle PWM settings, and min and max rpm?
What speed are you commanding when you see 3.3V?

Try increasing your PWM Frequency under the Spindle Tab. I had a similar issue where I could only get about 8v max.

You are using a ub1

Have you setup (cut / soldered) the jumpers on the ub1 correctly

Have a look at page 18 &19 of the ub1 manual

AO1 has a default setting which is not analog output.....

Also check your setting for the screenset are you using UB1 or UC300eth (another jumper on the board)

UB1 Owner's manual E1.5 Rev0
http://www.cncroom.com/downloads/UB1%20 ... 0E15R0.pdf

*4, *5 and *12 are the ones you want to read and understand around page 18/19 in the ub1 manual

I'm not sure that you need to change the solder bridge? Page 24 shows the spindle PWM set to Port 4, Pin 1, which is the default configuration.
I'd ask CNC Room as it's a little unclear (to me at least). I haven't used the Analog speed control on my UB1, but I did use it on the MB2 I used first.

You could also use AO2, and set up as shown on page 24 (at the bottom).

Thanks for helping out, the ANA ports for the PWM is not Voltageselective by soliderbridge, but I did solder it from Y401 too An1, that helped, cant understand why the Y401 port is defoult, but anyway problem solved, Thanks for pointing me in the right direction