everything is working perfect … but onr thing.
sometimes when connecting the battery to the plane ( twistar2 ) the motors will not run …
what i do is like that:
connect power to ground station
connect power to tx controller ( check that all sw are at lower position and throttle is minimum )
connect power to plane
after one second i have control of ail/ele/rud
after like 10 seconds i have control of the cameta pan tilt ( going under APM but not stabilized by APM )
i check to verify i have video on ground station
i wait more like 20 sec from plane power i get data on minimosd
i try the throttle … with very little amount of stick.
1 of 5 times it works … if it works, i can use like regulr status. if it is not working … i need to disconnect battery and reconnect.
waiting will not help … ( wait for more then 10 minuts )
what i did:
calibrate ESC togather
calibrate ESC one at the time
calibrate controller ( mission planner )
again
calibrate controller
add trim up / down to throttle / set back to zero
try to calibrate ESC via APM … but i cannot. i put stick to max then power the plane, motors jump to full speed …
Are you keeping the plane absolutely still after connecting power?
Do you get the normal series of beeps from the ESC’s when you connect power?
When it doesn’t work is it always both ESC’s or sometimes just one?
(Probably not relevant to your problem, but v2.75 has been replaced by v2.76 and it is recommended to use v2.76.)
[quote]Are you keeping the plane absolutely still after connecting power?
Do you get the normal series of beeps from the ESC’s when you connect power?
When it doesn’t work is it always both ESC’s or sometimes just one?
(Probably not relevant to your problem, but v2.75 has been replaced by v2.76 and it is recommended to use v2.76.)[/quote]
thank you for the reply.
i connect the battery and close the canopy as i do all the time. after closing the canopy i let the plane rest is taking about 5 seconds. ( same as connecting quad )
i do get normal init of ESC every time.
sometimes no motors at all, sometimes only single motor work ( not always the same motor - and they are connected with Y cable for the ground+signal )
i know about the new version, but sine i did not find any relevant fix for motor bug … i didn’t change.
the Y cable make me think this issue is not about power / signal / wires / … but about pwm / travel / limits / range / …
but i cannot run throttle range calibration via the APM, every time i try … the second the ESC finish init procedure the motors jump fo 100% … and not getting into program mode as they do when connected directly to rx ( same rx , but i rebind … and changed rx … and tried the original turnigy rf system … all the same )
this very same APM was installed on a quad, there i did not have an issue of a motor or motors not running … all 4 motors always run the same when armd.
Ok, the way I’d suggest doing it is to make sure your radio is set correctly, then set the end points of the ESC’s manually with the Y lead connected only to your Rx, then do your radio calibration in the mission planner. The end point values are all stored as min/max parameters so if you look at channel 3 (normally throttle) you should see values like:
RC3_MAX 1968
RC3_MIN 1057
Check the direction of travel for that channel too so that the ESC’s throttle up with stick up when connected to the Rx and to the APM. You said that the ESC’s jump to 100% after init so maybe that’s a clue too, in the MP you can tick the reverse checkbox then check if the ESC’s work properly. If not, try a servo on CH3 to see if it behaves correctly.
The jump to 100% is when i try to calibrate esc via apm.
I did check the values of thr max/min … Bit they look ok… And yet. Again … Sometimes it all works perfect … And if it works … It will work for the rest of the battery …
Today at field. I had 2 good flights … And billions of not working motors when battery is conected. Maybe a fail safe mechanism ?
I did not find anything other then the fail safe in mission planner … Which i do not use.
)