Wednesday, October 22, 2014

Blinding leds for shameless dirty race.

With Airgonay wood racing success 2 weeks ago, we've all saw Red Baron rear leds added a big part of the buzz around.
This made the red 5050 leds I used for ages looks like a candle in daylight.

So I've reworked again the Pocket Rocket 3D printed case from the previous post, and added some jet engine type area to fit HK led corns like those.
They have different power, I feel the 6 leds version already sufficient for that, but if you want to blind your opponents, you still can use the 10 leds one.

They will snap-on on the printed case, no need to glue them. Wires goes out inside the frame.

Only the rear part under the led case needs support for printing. 
(Updated STL files will be available shortly here.)

They are really bright, you can't even watch them with your own eyes (and don't even try).
Next step now, building a little circuit to vary strobe speed depending of throttle stick position.

3D printed makeup for Pocket Rocket

Here is a remix from Englishman/DTFUHF Pocket Rocket case.

This one has integrated stand-off, rear space dedicated for video tx and some side holes for airing/loweringweight )

This case is dedicated to use fatshark 600TVL cam.
You can download my stl files here.

I've also took the opportunity to install some 18A Kiss Esc  on the PR.
Still flying baseflight, using looptime=2000 & 500hz refresh rate seems to be perfect.
PIDs need a bit of retweaking, like lowering P for pitch / roll. It sounds logical, those esc are far more responsive, even compared to Simonk.

Maiden was done with 6x4.5" hq props  & 10° tilted motor mounts on 30km//h wind, I have to say, it has never flew so good.

Sunday, September 7, 2014

Improve frame drag in FFWD

I'v always reach a kind of speed limit with my miniquads above 70-80km/h. Probably because of the frame beeing so tilted that it create too much drag.

William from Schrediquette project made some wind tunnel test using tilted motors, and results are promising.

I've made some 3D printed mounts for the Pocket Rocket, you can download them on Thingiverse

This also help to see other thing than the grass when you're going fast.

First test yesterday, and I confirm, this is really promising.
Also, those 6x4.5 props are strong drug.

Thursday, August 28, 2014

Tricopter maiden

First fpv tryout of the printed tricopter showed in previous article.

PID were tuned using newautotune Taulabs feature from Peabody124.
I haven't touched anything and it almost give me really good settings.

Brocopter Y3 250, first maiden.

I still can improve the behavior.

Wednesday, August 27, 2014

Brocopter Y3: 3D printed mini foldable tricopter

So I've bought a 3D printer this summer, best hobby investment I've ever done so far.

To celebrate that I've decided to draw a mini tricopter. But I didn't want to have the yaw mechanic at the tail end.
After many different draws & simulation on Autodesk Inventor 2014 (top notch tool for that task), I've ended with a double ball bearing boom tail.

Here is the 3D assembly of the different parts

Center plates are cut on 1.5mm carbon fiber plates and total weight is under 100g. Weight can still be improved, I will try different filling rate later.

The tricopter have 3x 12A Kiss Esc from Flyduino. I've made a little piece to fill them all tightly and organise power distribution:

Then this plate is sticked to a CC3D case for the flight controller. It's a remix of the official one, using less height. You can find it on the Thingiverse page of this project.

The little black cube on the left is a 5V voltage regulator ( Recom 1A) for powering FC, servo & radio Rx.

It's now time to assemble  all the parts. I've mounted everything hanging up from the top plate. This way I can access the Esc wires, etc by just removing the bottom plate.

Flight controller is protected from water and dust. There's only holes for the servo connectors.

And here is the beast ready to fly:

Once folded

In the air

I've published all the needed STL and DXF to  Thingiverse.
There's also the RCGroups thread that should bring you more informations if you want to make one.

If some peoples are interested, I can have some center plates or complete kit with printed parts. 
Send me a message directly.

Videos are coming. :)

Sunday, May 11, 2014

Some fpv fun with 250 Pocket Rocket

Seems I've finally found the perfect combo for my 250 H-quad.
SunnySky 2204 2300KV with 6x3 props & 1800mA 3S gives me 8mn flight times with plenty enough pops for fun flying.

Frame is Pocket Rocket from ReadError with exended arms for 6" props.
Really nice little toy so far. :)

Treelanding from KipK on Vimeo.

little rocket in the pocket from KipK on Vimeo.

Tuesday, April 22, 2014

3DR cat & mouse play

Yesterday Mission Planner devs had fall back and removed bad otp check that prevent to upload firmware with homebrew boards.
This morning, the protection is back in their git.
WTF is happening in their head, don't they understand this completely deserve their purpose?

Anyway, this fake Open Source mind is tiring me.
I've forked Mission Planner on my github and will maintain a no otp version until they change their attitude on this.

Here is the fork:

and up to date binaries will be maintained here

Please 3DR guys,open your mind, respect open source spirit, improve your communication & marketing skills. Bad buzz is always a no go in business.