RC India

RC Models => Multirotors => Topic started by: gunnu on November 16, 2014, 02:10:22 AM



Title: ESC in multirotor
Post by: gunnu on November 16, 2014, 02:10:22 AM
hello,

plz let me know , is this imp that all the ESC of multirotor should be of same brand.
i have 4 ESC SimonK 30A and 2 Hobbywing 30A can i use this on my hexacopter. or i hav to buy all the ESC of same brand.


thanx


Title: Re: ESC in multirotor
Post by: sooraj.palakkad on November 16, 2014, 02:14:07 AM
It is better use same make ESCs in a multirotor.


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 02:18:16 AM
are all the 30A Simonk ESC are same (weather they are bought Different online site.) two from india and rest of from Banggood


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 02:20:37 AM
which ESC suits best to 900 to 1000Kv motors


Title: Re: ESC in multirotor
Post by: chintal on November 16, 2014, 07:15:47 AM
You need all exactly same escs
And with simonk firmware for a perfect setup


Title: Re: ESC in multirotor
Post by: sooraj.palakkad on November 16, 2014, 08:10:29 AM
well, here I think, we are following a myth- why??, I can explain-
When we say we have to use all the ESC to be exactly same, How can that be  possible ?
Even the same model, of ESCs produced in a batch from a brand - will definitely have slight varieties in their electrical characteristics - so we cannot assure any power system we use is exactly identical to the others - even if the motor, ESC and even the connecting wires all are same.
But the point in making sure all the ESC are alike - is not brand or anything We have to make sure the way all of the ESCs work is alike - for example different f/w and h/w will have different characteristics like i/p PWM frequency , motor controlling etc.....
If you mix match ESCs, make sure all the h/w and f/w are same or atleast alike - well the easiest way we can find for this is USING THE SAME MODEL ESCs !!!!
But for simonK ESCs, we know what the firmware is, and the h/w will be definitely alike - so you can with out hesitation mix and match simonK ESCs - but ensure,the ESC can provide enough current to drive the motor


Title: Re: ESC in multirotor
Post by: kiran rc on November 16, 2014, 08:31:22 AM
There will be lots of power difference using different esc's.Its better to use the same type of esc.


Title: Re: ESC in multirotor
Post by: phanivyas on November 16, 2014, 10:18:11 AM
I personally use 3 DYS 30A (SimonK) & 1 Hobbyking 30A Blue series (flashed with SimonK later) on my quad. I think there won't be any problem as long as refresh rate is same for all esc.

Earlier I used non SimonK (Turnigy Plush) instead of Hobbyking & found some throttle fluctuations. Pls refer the attachments.



Title: Re: ESC in multirotor
Post by: sooraj.palakkad on November 16, 2014, 10:21:46 AM
power difference in ESC- well even if we use same batch of same model ESCs from a brand - there will be variations in electrical characteristics.
even the power consumed by each motor is entirely different.
all we have to check is all ESCs are rated to same i/p frequency and refresh rate  - which will be ensured if we use same firmware ESC with a same h/w - that will be ensured for simonK ESC s, as for other ESCs, we don't know which f/w and h/w is used. - well we have to check only whether the ESC can deliver enough power to motor, and all the ESCs f/w and h/w are same.


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 01:05:02 PM
means i hav to buy all new ESC of same brand and from same site.
can u plz check these sites and tell me to which should i prefer.

thanx
http://www.banggood.com/Wholesale-XXD-HW30A-30A-Brushless-Motor-ESC-For-Airplane-Quadcopter-p-50621.html (http://www.banggood.com/Wholesale-XXD-HW30A-30A-Brushless-Motor-ESC-For-Airplane-Quadcopter-p-50621.html)
http://www.banggood.com/Simonk-30A-Brushless-ESC-with-5V-2A-BEC-withwithout-T-Plug-p-925638.html (http://www.banggood.com/Simonk-30A-Brushless-ESC-with-5V-2A-BEC-withwithout-T-Plug-p-925638.html)


Title: Re: ESC in multirotor
Post by: sooraj.palakkad on November 16, 2014, 01:23:50 PM
I don't think you have to buy 6 new ESC, either buy 2 SimonK 30A . or flash hobbywing 30A to simonK . :thumbsup:


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 01:25:26 PM
sir i dont know how to flash esc to new firmware.


Title: Re: ESC in multirotor
Post by: sooraj.palakkad on November 16, 2014, 01:36:01 PM
well, there is lot of good tutorials around the net,
it's easy - you need a USBASP tool


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 01:38:53 PM
ok sir ill try


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 01:43:37 PM
http://www.ebay.in/itm/USBASP-USBISP-AVR-Programmer-Adapter-10-Pin-Cable-USB-ATMEGA8-ATMEGA128-Arduino-/151389863694?pt=LH_DefaultDomain_203&hash=item233f89ff0e&_uhb=1 (http://www.ebay.in/itm/USBASP-USBISP-AVR-Programmer-Adapter-10-Pin-Cable-USB-ATMEGA8-ATMEGA128-Arduino-/151389863694?pt=LH_DefaultDomain_203&hash=item233f89ff0e&_uhb=1)



Title: Re: ESC in multirotor
Post by: sooraj.palakkad on November 16, 2014, 01:49:11 PM
well you also need some basic knowledge in microcontrollers, and soldering- but, it all can be learned.
But if in doubt, better get someone to help.


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 01:51:16 PM
ok sir


Title: Re: ESC in multirotor
Post by: sooraj.palakkad on November 16, 2014, 01:54:51 PM
So you have some vogue idea abt micro controllers, and electronics, right ?


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 01:57:27 PM
no sir. i hav done engineering in electrical. i dont hav any idea about micro controllers..


Title: Re: ESC in multirotor
Post by: sooraj.palakkad on November 16, 2014, 02:00:29 PM
well, you don't have to know everything, just identifying pin number and some soldering will do.
And no need of calling me "sir" :)


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 02:03:51 PM
ok


Title: Re: ESC in multirotor
Post by: parichya.gautam on November 16, 2014, 05:53:00 PM
off topic question but you purchase from banggood ? How do you pay ?


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 06:18:37 PM
by entropay sir or by credit card..

https://www.entropay.com/ (https://www.entropay.com/)


Title: Re: ESC in multirotor
Post by: parichya.gautam on November 16, 2014, 06:20:18 PM
ok, any similar sites you know of which allow debit cards ?


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 06:24:05 PM
no sir u cant make payment to international site by indian debit card. they only accept credit card ( HDFC , ICICI , Standard charted , Axis )

or u can pay by creating virtual card on entropay this card i prefer the most 


Title: Re: ESC in multirotor
Post by: parichya.gautam on November 16, 2014, 06:24:54 PM
ok. thanks for the info.


Title: Re: ESC in multirotor
Post by: gunnu on November 16, 2014, 06:26:54 PM
welcome. if u want to make payment to international sites. contact me ill help u to create virtual card on entropay.

thanx


Title: Re: ESC in multirotor
Post by: parichya.gautam on November 16, 2014, 06:28:32 PM
yea sure, I was actually having issues with creating password on entropay.

give your mail on PM btw.