Search found 2913 matches

by OverTheTop
Wed Jan 20, 2021 7:25 am
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System, Mk2 Evolution
Replies: 14
Views: 957

Re: Vertical Trajectory System, Mk2 Evolution

Hi Drew. Correct. There is a VTX (video transmitter) made by Matek that I will be using. The frequency means that the antenna shouldn't be too big either.

Should be a fun experiment :)
by OverTheTop
Sun Jan 17, 2021 6:08 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System, Mk2 Evolution
Replies: 14
Views: 957

Re: Vertical Trajectory System, Mk2 Evolution

Mounting the GPS and Magentometer A 3D printed frame was sketched and then printed up in the resin printer. This was printed in "rigid" resin, which includes a glass-fiber component. Overkill, but it was what was available and I am not going to complain. It is dimensionally accurate, quite...
by OverTheTop
Fri Jan 15, 2021 9:54 am
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System, Mk2 Evolution
Replies: 14
Views: 957

Re: Vertical Trajectory System, Mk2 Evolution

Scripting is a valid way of getting the functionality. The implementation of the scripting has been quite well done and will not drag the performance of the FC down. It basically exists in its own sandbox and should not be able to cause a FC failure. There is also a mechanism to write the script int...
by OverTheTop
Thu Jan 14, 2021 2:27 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System, Mk2 Evolution
Replies: 14
Views: 957

Ardupilot Internal Control Systems

Ardupilot Control Systems Here is a very basic overview of what the control systems are like internally within the AP firmware. It is quite a sophisticated piece of engineering. It has features such as potential and kinetic energy management, sensor fusion and redundancy, programmable control mixin...
by OverTheTop
Wed Jan 13, 2021 3:20 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System, Mk2 Evolution
Replies: 14
Views: 957

Just following the Script...

Just following the Script... As part of the functionality of this VTS I need to be able to switch between Manual and Stabilize modes using effectively switch closures. There is functionality in Ardupilot to switch to Manual easily, but less so to be able to switch to Stabilize. For some reason the ...
by OverTheTop
Sun Jan 10, 2021 6:06 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System, Mk2 Evolution
Replies: 14
Views: 957

Re: Vertical Trajectory System, Mk2 Evolution

Not planning on changing the default info at this stage. Here is a good image pulled from the interweb:
Display.jpg


The main things it will show is the current mode, GPS status and battery voltage. Other messages scroll across the top from time to time to report conditions.
by OverTheTop
Sat Jan 09, 2021 5:13 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System, Mk2 Evolution
Replies: 14
Views: 957

Re: Vertical Trajectory System, Mk2 Evolution

Hardware is Beginning to Coalesce The Bluetooth module was mounted by epoxying two pieces of G10 to the bulkhead near one end of the FC, and then fixed in position with some hotmelt glue at each end. BT.jpg The HD camera was mounted onto another bulkhead using two M2 screws tapped into the G10. Cam...
by OverTheTop
Fri Jan 08, 2021 9:25 am
Forum: Queensland Rocketry Society
Topic: Launch Dates 2021
Replies: 13
Views: 560

Re: Launch Dates 2021

Welcome aboard the Covid rollercoaster! Let's hope Qld gets a lid on this quickly and things get back to normal.
by OverTheTop
Fri Jan 08, 2021 9:12 am
Forum: Queensland Rocketry Society
Topic: Launch Dates 2021
Replies: 13
Views: 560

Re: Launch Dates 2021

i am guessing this mornings announcement has put a spanner into this weekends launch?

What spanner in the works?
by OverTheTop
Mon Jan 04, 2021 6:42 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System, Mk2 Evolution
Replies: 14
Views: 957

Re: Vertical Trajectory System, Mk2 Evolution

Been progressing this a little. Parameters and Documentatiom Firstly, in order to make sure all the relevant parameters are set correctly for the Ardupilot firmware, I have exported the parameter list to an Excel spreadsheet. This way I can have each parameter and the value assigned to it documented...
by OverTheTop
Sat Jan 02, 2021 3:12 pm
Forum: Electronics
Topic: NanoVNA V2: An Inexpensive and Effective Vector Network Analyser
Replies: 12
Views: 979

Re: NanoVNA V2: An Inexpensive and Effective Vector Network Analyser

No worries Matt. It has proven its worth to me a few times already. Well worth the money IMHO.
by OverTheTop
Wed Dec 30, 2020 3:10 pm
Forum: News & Events
Topic: Online Rocketry Convention
Replies: 1
Views: 256

Re: Online Rocketry Convention

Thanks for posting this Trip. Will try to log on for some of the sessions.
by OverTheTop
Sun Dec 27, 2020 9:56 am
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System (with some 3D printed parts)
Replies: 77
Views: 51220

Re: Vertical Trajectory System (with some 3D printed parts)

Very nice. They sure pack a lot into that flight computer


Absolutely. Lots of I/O and processing power too. Nice bit of hardware.
by OverTheTop
Thu Dec 24, 2020 3:11 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System, Mk2 Evolution
Replies: 14
Views: 957

Hardware Selection Completed

Hardware Selection Completed I have settled on a final set of modules for the VTS. This should get me all the functionality I want. HardwareRes.jpg The servos on the flight unit will be larger and digital for better performance (speed and torque), and what I have used on the Mk1 version. The flight...
by OverTheTop
Wed Dec 16, 2020 2:51 pm
Forum: Higher, Faster, Further
Topic: Vertical Trajectory System, Mk2 Evolution
Replies: 14
Views: 957

Re: Vertical Trajectory System, Mk2 Evolution

I have just changed the USB cable out for a Bluetooth telemetry link back to the PC. That is letting me have the entire unit as a separate entity. I might even change this link to an RF link for the flight hardware. I have now just been tidying up some hardware (removing what is not used currently) ...

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