Autobrake Control via P8 buttons

RayProudfoot

Hi Steve. I have tried unsuccessfully to program two GoFlight P8 buttons to the AutoBrake rotary selector on the PMDG737. The GoFlight program has commands for Autobrake Dec and Autobrake Inc but they only work for default aircraft.

Can this rotary selector be changed via a button command and if so, how? Thanks.

admin_pps

Hi Ray,

If you look at the autobrake example here: https://www.pollypotsoftware.org.uk/support/user-guide/user-guide-git/19-operating/37-configuring-goflight-devices-examples-pmdg-ngx.html you will see the event needed. You need to use this event with the clockwise and anti-clockwise actions. You would need at least two buttons, one going clockwise and the other anti-clockwise.

Best wishes
Steve

RayProudfoot

Hi Steve, thanks for your reply. The problem is that example references a knob, not buttons. I have tried DEC_AUTOBRAKE_CONTROL with every option in Button Action and it doesn't do anything.

If I choose EVT_MPM_AUTOBRAKE_SELECTOR it's the same problem. Can you try with a P8 and tell me what selections work please?

RayProudfoot

Okay Steve, got it sussed! To start off with the P8 unit was disabled and it took me a while to spot that. I've programmed two buttons now and the left LED lights up when RTO is selected and the right LED when 1, 2, 3 and MAX are selected. Both are off when the selector is set to Off.

RayProudfoot

Steve, whilst I now have the AutoBrake commands working I did waste an awful lot of time both yesterday and today trying to work out why I couldn't get the commands working using P8 buttons.

It transpires the module is disabled by default and requires the user to enable it before any commands can be assigned to buttons. But if you just disabled the drop-downs until the unit was enabled it would have been obvious it needed enabling. Just something to consider please because it's possible the chap having problems with his MCP is also because he doesn't realise it has to be enabled first.