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Author Topic: aproblem with esc ????????? please help me  (Read 629 times)
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please i build my first quad copter project using arduino > i use 4 esc's and i have a problem that 2 of my esc's start rotating from angle 100 and another one starts from angle 40 and the last starts from 70 . and i changed them many times and every time i change the new esc's start from different angles
the question is what is wrong with these esc's ? and how can i fix that problem
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Which Software on the Computer is causing this problem?
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i don't know i tried all esc's many times and  don't know where is the wrong
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I don't think you connected the grounds, Dave.
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Quote
the question is what is wrong with these esc's ?
No, the questions are:
1. Which ESCs are you talking about
2. Where is your code
3. Where is your schematic?

(4. What is wrong with your '?' key?)
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Do not send technical questions via personal messaging - they will be ignored.

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Hi Mahmoud,

Welcome to the forum. We will do our best to help you. However, we need more details about your hardware and software before we can help. Please follow the guidelines here to help us help you:

How to use this forum

At the very least, answer the 3 questions that AWOL indicated and we'll see what we can figure out.

Looking forward to schematics, part numbers, and code, and then we'll get to work.

Sincerely,
Michael
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my esc type is pentium 20a esc 
my motor is sunny sky 980kv
and i use the example of servo motors "sweep" in arduino program examples
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I don't think you connected the grounds, Dave.
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These:
http://www.megarc.com/mystery-pentium-20a-esc-inbuild-2a-bec-p-1083.html
http://www.himodel.com/electric/SUNNYSKY_X2212-980KV_2-3s_Outrunner_Brushless_Motor.html
?
(you could have posted similar links)

What about the answers to the other questions?
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this is the motor
http://www.himodel.com/electric/SUNNYSKY_Angel_Series_A2212-980KV_2-3S_Airplane_Outrunner_Brushless_Motor.html
and that is the esc
http://www.megarc.com/mystery-pentium-20a-esc-inbuild-2a-bec-p-1083.html

what other questions ?
i told you that the code is the example "sweep" from servo library in arduino program
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no one know what is wrong ?
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I don't think you connected the grounds, Dave.
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See reply #3
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Measurement changes behavior
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no one know what is wrong ?

Probably not. Unless someone owned that specific ESC/motor combination and had experienced the same problem symptom you are, why would your expect otherwise?

Lefty
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