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  • Reman: Like I said, In the past I've had a handful of packs "Go off" at me like fireworks after bad crashes (Usually with RC helis), So it's hard to get that image out of your head while stripping down Li-Po's. :)
    Today at 11:22:54
  • shawdreamer: the horror stories will always incite worry when messing about with Lipo's but its the same as everything else when working on electronics alike, alsong as your careful and methodical there's very little to panic about, I regularly recycle 4s's with a single dead cell into usable 3s packs, end of the days its alot more economical, safer and enviro friendly than having to bin them....just a pain that the dead cell is NEVER one of the outer cells so you always end up having to strip a good cell off to get at the bad cell before putting it back afterwards, its like dropping toast, it'll always land buttered side down and inevitably covered in pet fur :angry:
    Today at 00:11:16
  • Reman: Just did the one electrical job that still scares me. I dismantled some Lipo's with knacked cells and built usable packs out of the good cells. I've had packs go "VOOOOOOSH" at me in the past so I'm always slightly scared of having bare lipo contacts anywhere near what I'm working on, But all appears to have gone well and one of them is currently doing a charge/discharge cycle to make sure nothings a miss. :)
    January 20, 2019, 22:28:43
  • Reman: My original Dremel Pro made it to 14 years of heavy weekend use (And abuse) before it crocked. Dismantled that but it turned out to be a "Control module" fault, And Dremel made it ni on impossible to get into that without pooching it completely. :(
    January 20, 2019, 22:17:27
  • ched999uk: BR  ::)
    January 16, 2019, 22:26:54
  • Bad Raven: That's a warrnty claim if ever I heard one....
    January 16, 2019, 20:32:55
  • ched999uk: My 28 year old 12v 35w Weller soldering iron failed  :( I didn't fancy forking out £100 for a new one. Stripped it down and found conductor snapped in cable. 10Mins later all back working great. :smiley: ::) I am very happy!!
    January 16, 2019, 17:23:06
  • shawdreamer: "look up there....its a drone!.....and whats this noise?..... no.....no..... it cant be!....NOOOOOOOO.......OOOOOOOOOOOOOPS I DID IT AGAIN, I PLAYED WITH YOUR HEAR....."
    January 10, 2019, 14:17:24
  • shawdreamer: <starts downloading britney spears albums and preping his large frame to carry a PA system>
    January 10, 2019, 14:15:08
  • Bajadre: defo steveo :) we should get loads of drones together up there so how they handle more that one lol
    January 08, 2019, 19:39:07
  • steveo9007: its all a ploy to get who ever has won the contract for geofencing the airport in, i reckon  ::)
    January 08, 2019, 18:38:26
  • Bajadre: more lies hope they prepped the police staement already lol
    January 08, 2019, 18:27:49
  • Bad Raven: Take Offs resumed
    January 08, 2019, 18:24:45
  • steveo9007: yeah not good though is it..what will come out of this now its happened at both major airports  :o
    January 08, 2019, 18:05:13
  • Bad Raven: Planes still landing, appears take offs affected
    January 08, 2019, 18:02:47
  • steveo9007: newsflash people, drone sighting at Heathrow Airport  just received on news app..
    January 08, 2019, 17:54:07
  • shawdreamer: tsk x2, just checked my thingiverse messages too... another a8 owner asking if one of my designs would work with his printer.... I said no as its not fire proof.... now he seems confused :confused:
    January 05, 2019, 15:35:09
  • hoverfly: Some people,  he's probably heading for a Darwin award... :laugh:
    January 05, 2019, 13:58:53
  • shawdreamer: tsk.... a new Anet A8 owner asking for mod suggestions for his xmas first printer on thingiverse... I suggested a fire suppression system or atleast a wall mount for a fire extinguisher and smoke alarm..... he removed my post.... no helping some people :shrug:
    January 05, 2019, 12:42:05
  • Reman: I did double check it with a metre (Mainly because I knew if I didn't check the polarity this would be the time the manufacturer had gone off script and put the negative in the middle of the coax) and felt slightly cheated because it was only making 19.7 volts. :)
    January 04, 2019, 14:01:11

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Author Topic: Dromida Omnius wont fly  (Read 475 times)

Offline takinatrip

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Dromida Omnius wont fly
« on: September 06, 2018, 12:39:09 »
Hi everyone this is my first post. I have just been given a Dromida Ominus quad. The controller binds fine everything lights up as it should but the quad wont lift off the ground.
The rear lifts up but the front stays on the ground even though the rotors are spinning. If I turn left or right the corresponding rotor lifts up (inc the front) but it will not direct lift.
I thought the blades may be on the wrong way but switching these makes no improvement.
I cannot figure this out so any help will be greatly appreciated.
Thanks

Offline hoverfly

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Re: Dromida Omnius wont fly
« Reply #1 on: September 06, 2018, 13:33:34 »
Try re-calibrating level,   then props off and hold the quad and tilt it  nose down , the front two motors should speed up.Also try side tilt as they should speed up as well in line with the rear motors.
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Online Cheredanine

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Re: Dromida Omnius wont fly
« Reply #2 on: September 06, 2018, 13:39:27 »
Ok firstly you understand we are dealing with a cheap 1s toy grade here? There is little we can do.
When you say you turn left or right the front motors lift, do you mean pitch or yaw?

As hoverfly said, recalibrate is the first step

Offline Two-Six

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Re: Dromida Omnius wont fly
« Reply #3 on: September 06, 2018, 19:26:21 »
Perhaps your battery has had it. If you have been given it perhaps you don't know how the battery has been treated before you had it.  If it was discharged too low, like if it was left on then ran flat, the battery will be good for nothing.  You have a single cell Li-Po battery there with a JST RCY connector which is pretty common, so easy and cheap to replace.

Have a look at how to calibrate it too, it looks like it need to be calibrated every time you fly it.  There are a fair videos on how to calibrate it and also how to change some of the settings of the transmitter.

Also those gears and drive shafts look like a problem area.  First check the gears are clean without any damaged teeth, then check for hair round the drive shafts and other junk, then make sure they aren't bent and that there isn't much up and down play in the shafts.

« Last Edit: September 06, 2018, 19:53:36 by Two-Six »
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Offline takinatrip

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Re: Dromida Omnius wont fly
« Reply #4 on: September 07, 2018, 09:52:53 »
Thanks for your help everyone. Ive stripped the quad down and cleaned everything out it all looked in good condition. Ive used a good lipo from another quad I have. Ive followed calibration also but still no joy.
Heres a vid of what happens

Online Cheredanine

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Re: Dromida Omnius wont fly
« Reply #5 on: September 07, 2018, 10:05:49 »
Ok so front props are on the correct but not producing lift,

My first thought (and sorry if you are not new to quads) is you are using the pitch stick and thinking it is throttle. Radios can be set up in a number of modes, the two sticks, in the vertical direction, control pitch (tilting the quad forwards) and throttle,  depending on which mode it could be either way round, it really looks like you are increasing pitch, not throttle, try the other stick (the throttle should be the one that doesn’t self centre vertically)

For clarity, pitch stick makes the quad tilt forwards (or back), this makes it go forwards when it is in the air, but it doesn’t get it in the air.

Throttle increases the power, it is what makes it go.

As far as I can see you are giving it pitch but not throttle

Otherwise, Can you -
1.ensure the props are tight and don’t slip
2. On the video you are using pitch and possibly yaw, try doing it again doing roll (so the quad tilts to the left or right)
« Last Edit: September 07, 2018, 10:17:32 by Cheredanine »

Offline takinatrip

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Re: Dromida Omnius wont fly
« Reply #6 on: September 08, 2018, 19:00:27 »
Again thanks for your replies. Ive done another vid showing how the quad responds to input from the controller.
Any ideas or questions.

Offline Two-Six

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Re: Dromida Omnius wont fly
« Reply #7 on: September 08, 2018, 20:17:47 »
Humm, there isn't too much to go wrong really with this quad.  The props look like they are going the right way, they are on the right way up on the right motors as far as I can see.  The RX is receiving and the FC is controlling, it all looks like it should work...

I think its out of trim or not set level or both.  Have you tried this kind of thing (in the video) to calibrate it and to make sure your trims are set neutral?



Also have a look at this one if you haven't seen it before, I think the kid has had too much SunnyD but he covers all the main features of the TX...



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Online Cheredanine

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Re: Dromida Omnius wont fly
« Reply #8 on: September 08, 2018, 22:30:23 »
Agree that clarifies things a little.
Stick use is correct, front motors seem to spin but not create lift.
Calibration is first step

Offline takinatrip

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Re: Dromida Omnius wont fly
« Reply #9 on: September 13, 2018, 14:46:12 »
Ok tried calibration but still the same.
Do you think its worth trying this https://www.ebay.co.uk/itm/Dromida-E-Board-Yellow-Vista-FPV-DIDM1214/282756870198
or am I throwing good money after bad?

Offline shawdreamer

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Re: Dromida Omnius wont fly
« Reply #10 on: September 13, 2018, 21:12:28 »
the be-all and end-all in its most brutal form...

its a low cost setup, using low cost hardware with the minimal of spec to get it in the air.

as far as the makers looks at it, its more or less a use, abuse then straight in the refuse job and again to be brutal the makers probably expect the end users to understand this given the low purchase price a general spec.

so generally its probably just as you suspect and hinted at.... trying to fix it would likely be good money after dying cause, right now its no loss to you if you just bin or shelve it, that'll be different if you throw money a it and then have to bin it anyway. :shrug:
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Online Cheredanine

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Re: Dromida Omnius wont fly
« Reply #11 on: September 13, 2018, 22:22:35 »
What he said