Search found 141 matches

by dr.tom
Mon Jun 03, 2013 9:34 am
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

After like 6 weeks of dust collecting at my garage... (got a kid so had to take a little break ) checked if all works ok, seems so still with my self-rewound motors from last year, when there were no factory rewound ones to buy... http://img89.imageshack.us/img89/1765/bezimenadkow.jpg m good thing i...
by dr.tom
Tue May 21, 2013 8:27 pm
Forum: Ideas
Topic: Airplane mode RTH
Replies: 824
Views: 125307

Re: Airplane mode RTH

here's my setup, http://img850.imageshack.us/img850/4806/setupln.jpg from left to right: serial Ublox gps sensor, RCTimer - m 328p serial gps <---> i2c converter - m 328p based shield with GY86 IMU - m (after initial tests, gonna be replaced with promini+same IMU, for smaller footprint to fit into p...
by dr.tom
Thu May 02, 2013 4:09 pm
Forum: Ideas
Topic: Airplane mode RTH
Replies: 824
Views: 125307

Re: Airplane mode RTH

I am happily waiting for further development here, I don't understand coding like you, but can try it on the field and report bugs if I find any especially looking forward to ability to take speed into account, because fast planes must NOT turn too sharp,like bixler or some other FPV planes can, ful...
by dr.tom
Sat Apr 27, 2013 8:37 am
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

I am using original board from alexmos, but for DIY, now you don't even have to build your controller like I did in begining of this topic... when you couldn't buy alex or any other... chinese are selling open source martinez version for 44$ which works natively on german code, it is not as good as ...
by dr.tom
Thu Apr 25, 2013 9:35 am
Forum: Ideas
Topic: Airplane mode RTH
Replies: 824
Views: 125307

Re: Airplane mode RTH

Hello, can this GPS be powered from 3.3V instead of 5V? m http://www.rctimer.com/syssite/home/shop/1/pictures/newsimg/1350571330.jpg does anyone know where should i connect VCC to go around the voltage regulator that lowers the 5V to 3.3V, so I can feed it directly. maybe on '+' side of big yellow c...
by dr.tom
Tue Apr 23, 2013 6:40 pm
Forum: Ideas
Topic: Airplane mode RTH
Replies: 824
Views: 125307

Re: Airplane mode RTH

1. why would you launch it downwind?
2. why would you launch it with half empty battery?
by dr.tom
Sun Apr 14, 2013 7:56 am
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

2EosBandi: jest, tuning is needed, just like in everything else on our models :)


1080p available

speed up version,
http://www.youtube.com/watch?v=KCglXcCtqXg&hd=1
by dr.tom
Thu Mar 21, 2013 5:25 pm
Forum: Ideas
Topic: Airplane mode RTH
Replies: 824
Views: 125307

Re: Airplane mode RTH

is it possible to take speed into account?

for example if model is going very fast and you turn on RTH, it should'nt make sharp turn or recover from dive to quickly,
it might break it's wings.
by dr.tom
Wed Mar 20, 2013 7:30 pm
Forum: Ideas
Topic: Airplane mode RTH
Replies: 824
Views: 125307

Re: Airplane mode RTH

That is much better way than with GPS alt. gps is good for horizontal movement and speed readings, but in height, it has large oscillations, while even cheap baro BMP085 can hold plane as accurate as 1m. Tested many times.... I can only imagine how new MS5611 performs baro is especially good for FPV...
by dr.tom
Tue Mar 05, 2013 6:31 am
Forum: Ideas
Topic: Airplane mode RTH
Replies: 824
Views: 125307

Re: Airplane mode RTH

Does this RTH have any limitations, I mean can it work(with well dampened PIDs ) on some really fast planes? because other OSD's with rth just can't take speed into account and would make too sharp turn back in rth. I have some birds that go over 300... if they could be fitted with rth it would be g...
by dr.tom
Tue Feb 19, 2013 9:12 pm
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

insane brushless gimbal test done by a friend of mine.

DJI zenmuse, you can pack your bags and go home :D

from 0:50 :shock:
http://www.youtube.com/watch?feature=pl ... CngdQJFrsU
by dr.tom
Wed Feb 13, 2013 9:09 am
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

whining can be heard at <1m in quiet room only, GoPro is 100x closer than that :) 1cm.

but during gimbal operating, the propellers are creating much more noise, so it isn't really a problem,
pilot can't hear it,
by dr.tom
Tue Feb 12, 2013 10:05 am
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

It only has ''Ad. '' on it
I was expecting something like this, my mwii and promini boards have osc. more similat to that.

Image
by dr.tom
Mon Feb 11, 2013 8:04 pm
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

2 msev: who knows... maybe I can find some use of this stabilisation in surgery :)


Gimbal wrote:swell, just waiting for info about the crystal 16 or 20 mhz?


don't laugh if I took a pic of a wrong component on the board,
I believe this is it.
by dr.tom
Mon Feb 11, 2013 1:57 pm
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

no problem, just ask :)

I will try to read it if it has markings on it,
and take high-res photo and post it here in the afternoon.
by dr.tom
Mon Feb 11, 2013 12:30 pm
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

It's not commercial because I don't sell anything, and I didn't get anything for free or on discount price. Just put my videos online to show how can homemade gimbal (for under 250$ total) perform no need for overpriced servo gimbals that just don't work so good... I used 2826 and 2830 cheap rctimer...
by dr.tom
Mon Feb 11, 2013 8:40 am
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

unedited from this morning,

stock PIDs
will tune it of course
http://www.youtube.com/watch?v=dn6YBshWX1k
by dr.tom
Sat Feb 09, 2013 9:05 am
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

I received a few PMs asking for parts and where does what go, people, please install eagle program, and open the schematics, there you can click on ''i'' icon on the left, and click on anything you like, it will show it's name and specifications. I took some screenshots even to show how it works. ri...
by dr.tom
Sun Feb 03, 2013 2:30 pm
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

Yes,
free german code is working much better than 7 days ago...
and it is getting better and better every day, like Multiwii :)

http://www.youtube.com/watch?feature=pl ... K01qRW95qI
by dr.tom
Thu Jan 31, 2013 11:19 pm
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

if you can't find them locally 5$ per piece, unlimited supply, 7-10days delivery time... m me and my friends bought them there, works as it should. in other locations (parts stores locally in my country it costs around 40$ per piece!) and here they are selling alex's controller alone, not too high p...
by dr.tom
Thu Jan 31, 2013 6:56 pm
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

whaaaaat http://www.youtube.com/watch?v=e5enRVS8JxA that's Russian closed source controller m I have 1 on route to me and I hope it works OK. this is free open source code from german forum: m thanks dr. tom, pls could you share the link on the german forum, where they have it unpopulated or popula...
by dr.tom
Mon Jan 28, 2013 8:16 pm
Forum: Connecting elements
Topic: Promini as CPPM (PPMSUM) decoder?
Replies: 19
Views: 3079

Re: Promini as CPPM (PPMSUM) decoder?

PatrikE cleaned up previous version of code, now it has failsafe in case ppm line gets disconnected. Thanks. here are some pics of my arduino decoder ready for pluging servos in http://imageshack.us/scaled/thumb/600/69156524.jpg http://imageshack.us/scaled/thumb/72/10149853.jpg http://imageshack.us/...
by dr.tom
Mon Jan 28, 2013 9:12 am
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

I got PM's asking for parts list, no secrets, no problem, better to put it here so anyone could see if interested IMU 6050 m CPU 328p m driver chip 2x L6234D m driver board PCB m m you send treiber(driver) platine schematics to this guy and he makes it and sends it back to you, m m or you buy it on ...
by dr.tom
Mon Jan 28, 2013 8:33 am
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

here's my controller made by german PCB design, I used only driver part of the PCB, controller part was not needed IMHO because I already had promini laying around, so I used it. http://imageshack.us/scaled/thumb/836/blokovi2.jpg http://imageshack.us/scaled/thumb/26/blokovi.jpg http://imageshack.us/...
by dr.tom
Thu Jan 10, 2013 5:10 pm
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

alex kindly posted his hex files public m can't get it to upload via ftdi to try it out... edit: soldered ISP pins on atmel flashed ok but it doesn't work, http://imageshack.us/scaled/thumb/706/ispj.jpg http://imageshack.us/scaled/thumb/824/flashingm.jpg http://imageshack.us/scaled/thumb/7/guimq.jpg...
by dr.tom
Thu Jan 10, 2013 4:10 pm
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

give it a try, maybe you make something better than it is now :)

here are my test videos..
http://www.youtube.com/watch?v=k7E6p8cLt-U
http://www.youtube.com/watch?v=dSQo-r8Vdq8

gimbal has to be in perfect balance
http://www.youtube.com/watch?v=cqTl3QURUJs
by dr.tom
Tue Jan 08, 2013 12:15 pm
Forum: Connecting elements
Topic: Promini as CPPM (PPMSUM) decoder?
Replies: 19
Views: 3079

Re: Promini as CPPM (PPMSUM) decoder?

new plug&play product doing right this thing needed for FPV models came up, just bought it and will report if it works ok.
http://www.foxtechfpv.com/rmilec-ppmpwm ... p-403.html
by dr.tom
Sat Jan 05, 2013 9:22 pm
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL - big revolution for a few

someone posted a little educational video,
doesn't say what code he is using.

http://www.youtube.com/watch?feature=pl ... _8Kb_fXRrU
by dr.tom
Thu Jan 03, 2013 1:19 pm
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Re: Brushless direct drive GIMBAL

No problem, at the moment I am using DIY motor driver from parts available in local store. (waiting for the smaller and better working one, L6234D from ebay, it's even cheaper than this parts needed for DIY version and no need for so much soldering!) schematics are here: see attachment. it would be ...
by dr.tom
Thu Jan 03, 2013 7:59 am
Forum: Ideas
Topic: Brushless direct drive GIMBAL - big revolution for a few $
Replies: 84
Views: 50192

Brushless direct drive GIMBAL - big revolution for a few $

for some time DJI ZenMuse was THE ONLY one offering it, price was somewhere in the 5000$ ballpark, (3500 gimbal + 1500$ flight controller needed to make it work) showing off m wind or no wind, and no matter how you punch the sticks, the video is rock stable... m m with price like that, in my whole c...
by dr.tom
Sun Dec 23, 2012 4:38 pm
Forum: Pictures & Videos
Topic: GPS RTH enabled MultiWii Hexa :)
Replies: 12
Views: 2785

Re: GPS RTH enabled MultiWii Hexa :)

some more with newly made hexa... testing r1284 revision...

cold outside, but warm in a car.

no need for control during 26 minutes :)

http://www.youtube.com/watch?feature=pl ... _Ms5goiksM

1:40 close
11:55 flight parameters
22:50 landing
by dr.tom
Tue Dec 18, 2012 1:22 pm
Forum: Connecting elements
Topic: Promini as CPPM (PPMSUM) decoder?
Replies: 19
Views: 3079

Re: Promini as CPPM (PPMSUM) decoder?

yes, it's super solution for many uses for little money you can setup it like here m btw, why does failsafe kick in only if I power the board without ppm stream connected? If I unplug it(PPM in) during operation, failsafe doesn't activate... did you try it? regarding eeprom and VTX, dunno, I fly lon...
by dr.tom
Tue Dec 18, 2012 9:59 am
Forum: Connecting elements
Topic: Promini as CPPM (PPMSUM) decoder?
Replies: 19
Views: 3079

Re: Promini as CPPM (PPMSUM) decoder?

thnx, my fault my 500mw 433 tx was on table when I tested it, jerks came from RX, when I plugged servo directly in it(it supports PWM+PPM at same time) it behaved same. In a rush I forgot that TX has to be over 2m away from rx for clean run now is ok on 50Hz. will try on 160Hz when I install it in p...
by dr.tom
Mon Dec 17, 2012 11:26 pm
Forum: Connecting elements
Topic: Promini as CPPM (PPMSUM) decoder?
Replies: 19
Views: 3079

Re: Promini as CPPM (PPMSUM) decoder?

Thank you, I haveRCTimer BT and 433 links('#define LCD_SERIAL3W' option) available for trimming use on the field m I already fly long range on 433 UHF TX, so this module will only be used for setting up via laptop, then removed, because the less RF on board, the better the range but it must be set u...
by dr.tom
Mon Dec 17, 2012 11:09 pm
Forum: Connecting elements
Topic: Promini as CPPM (PPMSUM) decoder?
Replies: 19
Views: 3079

Re: Promini as CPPM (PPMSUM) decoder?

Thanks Patrik

that would be GREAT,
to modify servo center(trim) in gui,

because it eliminates the need for constant reupload of the code
(maybe end points too?)
by dr.tom
Mon Dec 17, 2012 11:05 pm
Forum: Connecting elements
Topic: Promini as CPPM (PPMSUM) decoder?
Replies: 19
Views: 3079

Re: Promini as CPPM (PPMSUM) decoder?

is at least 160 Hz ok? even enough to use it on first 2(roll+pitch) or 4 first channels(roll+pitch+thr+yaw) if possible, because now it seems a little jerky on 50Hz, even at 1000us CT on plain promini without sensors. other are just for switching OSD and autopilot options and doesn't matter so much ...
by dr.tom
Mon Dec 17, 2012 8:44 pm
Forum: Connecting elements
Topic: Promini as CPPM (PPMSUM) decoder?
Replies: 19
Views: 3079

Re: Promini as CPPM (PPMSUM) decoder?

It WORKS! thank you very very much. hope it will make use to some other pilots too, because in long range FPV it is pretty useful to be able to decode PPM sum to PWM and place receiver far away, with short antenna. it works like this on Promini THR - > D12 ROLL -> A0 PITCH -> A1 YAW -> A2 AUX1 -> D1...
by dr.tom
Mon Dec 17, 2012 6:16 pm
Forum: Connecting elements
Topic: Promini as CPPM (PPMSUM) decoder?
Replies: 19
Views: 3079

Re: Promini as CPPM (PPMSUM) decoder?

configured MWii to read 8 channels over PPM sum for now on full MWC board not to mess with sensor part, to avoid getting i2C errors, later will try on plain promini arduino and solder pins http://imageshack.us/a/img856/3621/setuplh.th.jpg every channel works OK reacts correctly to stick/button/pot m...
by dr.tom
Sun Dec 16, 2012 8:43 pm
Forum: Connecting elements
Topic: Promini as CPPM (PPMSUM) decoder?
Replies: 19
Views: 3079

Re: Promini as CPPM (PPMSUM) decoder?

thanks for the tip (and for making MWC code better and better, I keep seeing your name in updates) I already have an OSD with autopilot(attitude, heading and altitude lock and RTH functions) from 1m:50s m (hoping that MWC coders will fully implement GPS RTH for planes too, I like it on my multirotor...
by dr.tom
Sun Dec 16, 2012 6:04 pm
Forum: Connecting elements
Topic: Promini as CPPM (PPMSUM) decoder?
Replies: 19
Views: 3079

Promini as CPPM (PPMSUM) decoder?

Hello, I'm flying a 2m wingspan model, best range is when my UHF RX and VTX antennas are separated as much as they can, on vinglets... video: m but then I have to route all servo cables over whole wing (rx is there because of keeping the antenna short) I did it with flat cable but it's not so practi...
by dr.tom
Thu Nov 22, 2012 6:06 pm
Forum: Ideas
Topic: variometer implemented - test away
Replies: 13
Views: 2102

Re: variometer implemented - test away

there is an variometer based on arduino and MS5611 baro,
by kapteinkuk,
but outputing on 433MHz and captured with handheld radio unit...
it seems like it could be modified to drive buzzer onboard (or sound feed ) for FPV usage...

http://www.rcgroups.com/forums/showthread.php?t=1749208
by dr.tom
Thu Nov 22, 2012 5:55 pm
Forum: Ideas
Topic: variometer implemented - test away
Replies: 13
Views: 2102

Re: variometer implemented - test away

could MWC code output sound via FPV gear? if it can generate PWM, maybe it could generate simple acoustic output? something like this? m If it is possible somehow, I would like to test it in my FPV plane, put mwc board (crius aio) and connect some output pin from it to audio-in on fpv-tx, even if it...
by dr.tom
Wed Nov 21, 2012 4:13 pm
Forum: Software development
Topic: Altitude Hold improvement solution
Replies: 580
Views: 1430519

Re: Altitude Hold improvement solution

nice, but I am talking about 'alt hold', not 'alt display'. in GUI my MWii also responses to 10cm change, nice to watch, but in air it's not so good. drifts by time... ...back to your OSD how does it fly? it's under development as written in video, this is tested and flying as we speek. and controls...