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« on: December 01, 2014, 05:36:03 PM »
anis jayaram
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i brought Avionic C2830 KV850 QUAD brushless motor(http://www.rcbazaar.com/products/1905-avionic-c2830-kv850-quad-brushless-motor.aspx) but when i connect it to an ESC and just throttle up the motor does not spin but instead it is jumping around and making beeping noise can you please suggest a fix ? esc calibration was already done and it spun for one time ESC is 30A simoK firmware EMAX
video link to the problem -
« Last Edit: December 01, 2014, 06:19:10 PM by anis jayaram » Logged
 

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« Reply #1 on: December 01, 2014, 05:39:35 PM »
K K Iyer
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@ anis jayaram
Check for break or bad solder joint in the motor's 3 wires.
Regards
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« Reply #2 on: December 01, 2014, 05:44:44 PM »
sanjayrai55
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I agree with Iyer sir. This behavior is typical of two-phasing
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« Reply #3 on: December 01, 2014, 06:02:13 PM »
sooraj.palakkad
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Yeah, this probably could be only a loose joint, either in battery side or on the motor side.

Are you using connectors, or just twisted the cables up for testing it ?
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« Reply #4 on: December 01, 2014, 06:21:26 PM »
anis jayaram
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i just twisted it to check whether it is working it worked one time but didnt so the next
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« Reply #5 on: December 01, 2014, 06:22:14 PM »
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i just twisted it to check whether it is working it worked one time but didnt so the next but i used insulation take to hold it in place
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« Reply #6 on: December 01, 2014, 06:41:31 PM »
sooraj.palakkad
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It should be just connection problem, try after soldering proper connectors.
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« Reply #7 on: December 01, 2014, 06:44:32 PM »
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set acc_hardware = 1



I agree. This looks like a case where only two of the three phases of the motor are being supplied, causing this 'twitching'. Solder on some bullet connectors (male on the motor and female on the ESC) and try again. BTW, you can remove the 's' from https in the YouTube link and it will automatically be embedded in your post.
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« Reply #8 on: December 01, 2014, 07:20:28 PM »
sooraj.palakkad
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@SK, hey, you have had same problem right ?
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« Reply #9 on: December 01, 2014, 07:23:58 PM »
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Yup, I hadn't soldered the bullet connector on properly in one case and in the other case, the connection between the male and female connector was loose (sliding). Compressing it slightly with pliers helped. A couple of hours ago, another bullet connector came off my ESC after an ugly crash (hit a tree). I have run out of props and need to buy more  Tongue
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« Reply #10 on: December 01, 2014, 07:26:28 PM »
sooraj.palakkad
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is that the first crash ?
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« Reply #11 on: December 01, 2014, 07:38:26 PM »
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No way. On Friday, a prop broke in mid air and the quad flipped, breaking the other 3 props. I have a had several rough landings and a few prop strikes. In fact, I hit another tree a bit earlier but managed to compensate with higher throttle to avoid crashing since the branch was thin. I also had a few flips when I tried flying with old firmware.
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« Reply #12 on: December 01, 2014, 07:44:42 PM »
sooraj.palakkad
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well, the list goes on ..Sad
You  should seriously consider tuning the FC and transmitter again for problems, Usually, if correctly set up and flew in self level, It should not lose control.
I don't think it's merely manual errors.
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« Reply #13 on: December 01, 2014, 07:47:55 PM »
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set acc_hardware = 1



You're right. I have tuned the self-level and PI settings though PI needs some more work. Self level gains were too high for me causing oscillation. My quadcopter tends to climb and dip excessively, even with some expo. I will turn up the expo and try again once I get more props. I have run out  Bang Head. Luckily RCBazaar is only 20 minutes away for me   Smiley
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« Reply #14 on: December 01, 2014, 07:48:51 PM »
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I forgot I am hijacking Anis jayaram's thread, sorry for that.
@SK1701, reach via PM
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