I read some threads that mentioned HILT is no longer available in the new firmware.
Does anyone know what the last working version of HITL Sim and Mission Planner were?
I want to use Pixhawk to run HITL simulation with Mission Planner and X-Plane 10.
Your input is appreciated in advance
David
ArduPilot hasn’t supported HITL since we transitioned away from 8 bit hardware as far as I know.
The key reason for that is that you can’t feed the EKF fast or consistently enough over USB.
I think @tridge had a look at implementing a version of HITL, using EKF type 10 (part of sitl) instead of the actual estimator, but I’m not sure where that got to.
As it stands, you can attach a lot of hardware peripherals to SITL (real gps, telemetry, companion computer etc etc), which provides a realistic test of the drivers etc.
Perhaps consider asking a different question: “how do I test [insert what it is you need validated] with ArduPilot?”
@james_pattison,
Thanks a lot for the response and the information.
The reason that I want to use HILT is to get the real PWM outputs (that drive Elev, Ail, Rud and throttle) from Pixhawk. And I will use these PWM outputs for some other purposes.
Is there anyway we can get the updates on HILT from @tridge ?
I haven’t tried out SITL yet. Back to your suggestion, my question would be: how do I test the servo movement with ArduPilot?
Not giving much away! 
All that data can be streamed via serial from SITL, which is much better for data transport than sniffing pwm.
Thanks for the response.
Yes, SITL has a lot good features and advantages. I’ll use it for sure.
But I still love to use HITL.
Is @tridge a right person to contact for HITL of AudrPilot?
@texram Did you get to solve this? I need to implement a HITL simulation and can’t find the PixHawx HIL Software!