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3d - Printworx

Printing 3d Forum

Mark 6 Teslaquad; 180mm (Mini Me)

Started by teslahed, Wednesday,April 08, 2015, 13:23:57

Previous topic - Next topic

teslahed



No video gear yet and a bit more tidying up still to do, but it';s almost ready for the first LOS test flight  :smiley:
One circlip short of a quadcopter.
 1 lobe short of an antenna.

kilby

Not much kit, but what I have I like
Armattan Tilt 2, Morphite 180, Quark 150, Decapitated NanoQX
Taranis+

teslahed

Saturday,April 18, 2015, 02:29:42 #32 Last Edit: Saturday,April 18, 2015, 05:26:01 by teslahed


It flies!

Now to get the FPV gear on it.
One circlip short of a quadcopter.
 1 lobe short of an antenna.

philtrum

looking good chris, they are great fun to fly
Many Thanks
Phil
www.makeitbuildit.co.uk

nub

a mini me :o :cool:

just had a quick skim through the thread and it looks pretty decent, will have to come back and give it a proper read over.
Point and click.

Monkey see, Monkey do.

teslahed

Saturday,April 18, 2015, 12:48:43 #35 Last Edit: Saturday,April 18, 2015, 12:55:35 by teslahed
Just reflashed all the ESCs;

http://makeitbuildit.co.uk/index.php?route=product/product&product_id=391

with the latest version of SimonK. Apparently these ESCs use bs_nfet - i certainly didn';t let any magic smoke out anyway.

I';ve enabled Comp_pwm and the latest version of SimonK supports oneshot so i';ve got that running now as well.

It';ll be interested to see if i notice any improvements.

2 mins of flight = 268mAh of battery use. I predict 5 min flights with just over 20% in reserve.
One circlip short of a quadcopter.
 1 lobe short of an antenna.

Raf

Brilliant love it!
I may venture in "small" world myself.
Keep up good work Chris  ~~

teslahed

One circlip short of a quadcopter.
 1 lobe short of an antenna.

bunnygirl80

Always smile because you never know who could be falling in love with it. :) Drone Operator in North Wales. www.aerialworx.co.uk

teslahed



After hitting the tree branch it just rolled along the ground and landed right side up. I could have carried on flying if i';d bothered to try taking off again but i was being cautious.
One circlip short of a quadcopter.
 1 lobe short of an antenna.

Raf

Monday,April 20, 2015, 01:12:15 #40 Last Edit: Monday,April 20, 2015, 01:40:10 by Raf
Chris how is the power delivery ratio with these dinky motors on 3S with 4" props?
I used MT1306-10 3100kv Tigers on one of my frames running 2S batts and turning 6" props. They sound sweet but it';s not a power house. I think they would handle 4" easily on 4S cos that';s what used on Gemini I think - rebranded Tigers MT1306-10 with 4" props.

teslahed

It';s not a punchy in the climbs as the 250 on 4 cells and 5" props i';m used to flying but that';s not really surprising.

With the mobius it feels slightly underpowered for me but is lots of fun. Without the mobius it feels much livelier and is better through the gaps between trees etc.

I am using a couple of old batteries that may not be in the best condition. Next month i will get new higher C rated LiPos and it may speed up a little.

I';ll try and get one of the ultra lite 808 #16';s next month when i can afford it;

http://www.ebay.co.uk/itm/Mini-DVR-808-Micro-Camera-16-V3-D-HD-720P-H-264-Pocket-Camcorder-Video-Recorder-/160874297245?pt=LH_DefaultDomain_3&hash=item2574daf79d

Version 3 of the 808 #16 is only 17 grams;
One circlip short of a quadcopter.
 1 lobe short of an antenna.

kilby

I have one of these kicking about if you want it http://www.techmoan.com/blog/2009/7/5/video-review-of-the-aee-md80-mini-dv-spyaction-cam.html

Not great but it works and it';s even lighter if you strip the case off
Not much kit, but what I have I like
Armattan Tilt 2, Morphite 180, Quark 150, Decapitated NanoQX
Taranis+

teslahed

Wednesday,April 22, 2015, 12:29:33 #43 Last Edit: Wednesday,April 22, 2015, 13:16:10 by teslahed
I have just used my Watt meter to test the current draw of my micro quad;

It uses 13 Amps in the hover at 143 watts.

It uses 29.5 Amps at full power which is 288 watts.

All at 3 cell voltages.

If i use these cheap hobbyking batteries;

http://www.hobbyking.com/hobbyking/store/__11899__Turnigy_nano_tech_850mah_3S_25_40C_Lipo_Pack.html

I have 25 to 50C of 850mAh 3 cell power.

25 x .85 = 21.25 Amps.

So i can hover continuously with plenty of headroom to spare.

50 x 0.85 = 42.5 amps. So if i use full throttle in short bursts i will never exceed the maximum power rating of the LiPos.

If i go full throttle for minutes at a time then i will exceed the 21.25 amps continuous power rating and eventually my LiPo may die - but on something this size it';s unlikely that i will use full power for more than thirty seconds or so. It';s not really designed for all out speed in large spaces, i have the 250 and 280 for that.

As a side note the motors are rated to a maximum of 7.95 amps each;

http://makeitbuildit.co.uk/index.php?route=product/product&path=75_59&product_id=390

Specifications:
KV..................................................................................................3100
Configuration....................................................................................NP
Stator Diameter................................................................................18mm
Stator Length....................................................................................14.1mm
Shaft Diameter..................................................................................M5
Motor Dimensions(Dia.*Len)................................................................Φ18×15.1mm
Weight (g)........................................................................................12g
No.of Cells(Lipo)................................................................................2-3S
Max Continuous current(A)...................................................................7.9A
Max Continuous Power(W)...................................................................58.5W
Internal resistance..............................................................................Ω

So i am just under this at the peak power levels of 29.5 amps / 4 = 7.38 amps per motor.

The 4x4.5 bullnose props are obviously amp hungry but i am still within limits which is nice :-)

One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

Friday,April 24, 2015, 07:45:59 #44 Last Edit: Wednesday,May 27, 2015, 21:39:09 by teslahed


Another short flight with the Mark 6.
One circlip short of a quadcopter.
 1 lobe short of an antenna.

Revs

Great Chris :smiley: Are you flying in Rattitude mode there?

teslahed

I';m using a Naze32 with cleanflight.

I only ever fly in Rate mode. I think Ratitude is CC3D based and i am not exactly sure what it means.

Just checked;

https://wiki.openpilot.org/display/WIKI/Rattitude+Mode

QuoteRattitude Mode is an OpenPilot implementation of MultiWii Horizon Mode.
This is basically a hybrid mode which gives you the stability of Attitude mode, but will allow you to preform flips, rolls etc by switching from Attitude to Rate when your stick movement passes a certain percentage.  It reverts back to Attitude when your stick comes back past that same percentage


Nope; i';m flying in pure Rate mode - no auto-levelling for me  ::)
One circlip short of a quadcopter.
 1 lobe short of an antenna.

Revs

It was that first 360roll that threw me. You stopped it perfectly level. Jedi reflexes ;)

teslahed

A quick update;

I';ve been using these ESCs on the aircraft;

http://makeitbuildit.co.uk/index.php?route=product/product&path=75_32&product_id=391

Despite what they look like, if you want to reflash them they use the bs_nfet file / settings the same as the blue series 12 amp ESCs.

I';ve flashed mine with the latest SimonK with CompPWM turned on and they appeared to respond a little better.

More recently i have flashed them with the latest BLHeli - 13.2 i think. Again you pick the file for the blue series 12 amp ESCs and they just work. If you pick the wrong file then your ESCs will fry and you';ll wish you hadn';t. If in doubt do one at a time to limit the damage.

With BLHeli it';s now possible to turn on light damped mode which is effectively regenerative breaking. This should give further stability and performance increases.

I';ve tested mine indoors but really need some good weather to get the thing outside for a proper flight to do a comparison.

I';ll post up a flight video as soon as i have one :smiley:
One circlip short of a quadcopter.
 1 lobe short of an antenna.

Gaza07

looking good Chris maybe it s time I built a small quad  ::)

teslahed

And now for the BLHeli test flight;



One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

Current Pids;



P on pitch and roll is high because i am running with oneshot enabled ESCs which let you put that up more before the feedback oscillations kick in.
One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

Monday,May 18, 2015, 14:59:50 #53 Last Edit: Monday,May 18, 2015, 18:01:28 by teslahed


Latest flight from the 180.
One circlip short of a quadcopter.
 1 lobe short of an antenna.

quadfather

Your friends looked suitably impressed.  :laugh:
-rw-rw-rw-  -  The Number of the Beast

DebianDave

How are you finding the wind (or rather breeze handling) Chris? I';m still mucking about with brushed micro FPV craft and find that anything over a gentle breeze really ruins the fun. They are 1S, 135mm diagonal and ~60G though!

Really want an RX122 Atom but it looks like another 6 months until availibity here and then there is the issue of proprietary stuff and that it might still suck in the breeze... A 180 might be the saner choice
https://www.facebook.com/pages/North-London-Multirotor-Pilots/835897706429581

Live in and around North London? Please like, share and participate on this page

teslahed

Wednesday,May 27, 2015, 07:36:59 #56 Last Edit: Wednesday,May 27, 2015, 21:13:15 by teslahed
I find it flies well in the wind because of it';s high power to weight ratio and relatively low gust response. Despite being quite small - compared to a 1 cell ';toy'; grade quadcopter there is no comparison.

Latest flight;

One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

Tuesday,June 30, 2015, 23:52:12 #57 Last Edit: Thursday,July 02, 2015, 15:51:39 by teslahed
Flying somewhere new for a change;



Flying with Dave (oakley).
One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

Shorter stand offs between the plates and slightly neater wiring;

One circlip short of a quadcopter.
 1 lobe short of an antenna.