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Old Jun 07, 2014, 09:02 AM
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Joined Mar 2007
140 Posts
Help!
JETI HiCopter Multicopter ESC and ZEROUAV GEMINI CONTROLLER

I Have recently started using Jeti Hicopter Multicopter esc, 40 amps.
and have found them to be the best so far.
Till now i was using the HiCopter Multicopter esc with DJI Wookong M
no problem what so ever, super performance.
Now i have started using ZEROUAV Gemini Controller
BUT
Jeti ESC are not working with Gemini Controller
I first tried with Red wire connected to the esc connector
the esc did not arm
then i tried with the Red wire removed
still did not arm
Is anyone using Jeti Hicopter esc with zerouav controllers.
I really never imagines that there would ever be a situation that an esc would not work with a particular controller.
I always thought the signal for esc was standard no matter what the brand
or no matter what the combination of esc and multicopter controller
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Old Jun 07, 2014, 10:05 AM
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Joined May 2010
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Jeti ESC needs to see low position of the throttle otherwise it will not arm.
Check your board what it does, at idle setting.

Zb/Esprit Model
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Old Jun 07, 2014, 10:55 PM
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Joined Mar 2007
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Zb/Esprit
thank u so much for a speedy reply
Yes, ESC must see low posn of throttle to arm... had forgotten about that .
so i set the servo limits to 125 and travel to 125... no luck,,, then set both to 150 and powered up again.. no luck.
So i am up against the wall again....
But i did notice something, that once system is powered up, the motors go a bit hard, when i flick the prop with my finger,,, its as if there is some braking kind of an effect.
i can feel the drag on the motor.
when there is no power to the system, and i flick the prop , it moves freely.
tried this a couple of times... when ever power is on, the motors have a drag, and the props don't move freely when flick.
But that apart,
I am still baffled at esc not powering up, even when limit and travel is at 150. even moved trimmer to fully down.
No luck.
So i put back the Wookong M controller, and bang, all works perfect. esc power up every
time.
But with zero uav Gemini.. .jet esc just won't power up.
Still hoping i our you guys can come up with some other explanation or solution
in the mean time trying everything.
even reversed the throttle and tired it....( after removing props off course hahaha)
Just to put some more information in,,,
on the Android GCS, the throttle indication and all other indications are good...
but motors won't arm.
Have written to zero uav also, but i doubt they would have used Jeti ESC so don't expect a solution.
unless they now do something to the software, so that Gemini Controller can arm Jeti ESC,
I wish i could send them 8 Jeti ESC to try out on their E1100 OCTA system to find a solution
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Old Jun 08, 2014, 11:56 PM
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Joined Mar 2007
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Zb/Esprit
just got info from zerouav
the esc should handle 400hz and 3.3v signal
400 know is not a problem, cause jeti can handle up 500
can you confirm 3.3v
i am using the esc signal wire without any extensions.
so i don't thing where would be voltage drop in signal below 3.3
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Old Jun 09, 2014, 08:36 AM
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Joined May 2010
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Connect the board that works and measure Voltage on the signal pin.
Ask board manufacturer what is the signal width (ESC should arm at 1ms, verify with your radio, the jeti will give impulse width at servo monitor screen)

Zb
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Old Jun 15, 2014, 11:05 PM
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Joined Mar 2007
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Zb,
thanks for the reply and info
has also checked with Jeti,
Jeti said all its Hicopter Multicopter esc are set to arm at 1.3 to 1.1 ms
so if i put end point of throttle at 150%, i guess that should be around 1.1 ms or lower.
but if Jeti esc gives wants 1 ms, as you say, then i guess, Jeti esc won't arm.
I just measured the volt at signal pin out from Gemini,
with and without esc connected,
in both cased it was 1.333 V.
checked it three times by putting the system off and on again
its 1.333v at gemini output from controller for esc signal
but i had used my multimeter for measuring, and its a reasonably good multimeter.
Gemini GCS has esc calibration procedure on its GCS on Android,
so i did do that also, but no luck.
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Last edited by rameshtahlan; Jun 15, 2014 at 11:11 PM.
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