Thread Tools
Apr 15, 2012, 09:06 PM
Registered User
Discussion

ESC Calibration with 4.0 Software


After calibrating the escís on my hexacopter with the new 4.0 firmware, I noticed that one motor begins spinning just slightly before all the others begin to spin. This difference is so small that the other 5 motors begin spinning 1 or 2 clicks on the throttle stick after the 1st motor. Is this something to be concerned about, should all motors begin spinning exactly at the same time or is it ok for there to be a slight difference
Sign up now
to remove ads between posts
Apr 16, 2012, 01:12 AM
Registered User
Maybe the board isnt standing exactly level? But Im not sure if that affects it. Here they all start the same time.

#odd

I recalibrated with the new feature (all at the same time) - and the gain suddenly dropped from 26 on TX to 16 on TX to make it flyable. Motors starting the same before and after.
Apr 17, 2012, 02:32 AM
Sky blue near dusk
S11D336B's Avatar
There is a small bug in that feature which gives an incorrect range. We have a fix and it will be released soon.

In the mean time, it makes sense to calibrate your ESCs manually with your receiver.
Apr 17, 2012, 03:27 PM
Registered User
by manually do you mean not all at once but one at a time?
Apr 17, 2012, 03:33 PM
Sky blue near dusk
S11D336B's Avatar
I mean one at a time while connected to your RX. Not connected to the HFP.

Quote:
Originally Posted by Huck Norris
by manually do you mean not all at once but one at a time?
Apr 17, 2012, 11:06 PM
manual flying apologist
Adidas4275's Avatar
i just wired up a 6 way Y to connect all ESCs to my Rx throttle channel

works every time
Apr 21, 2012, 02:24 AM
aka Helidaho
AeroVideoUS's Avatar
Quote:
Originally Posted by Adidas4275
i just wired up a 6 way Y to connect all ESCs to my Rx throttle channel

works every time
Genius!
Apr 21, 2012, 05:38 AM
SuperX Hex and X8 Flyer
ross_badger's Avatar
Quote:
Originally Posted by Adidas4275
i just wired up a 6 way Y to connect all ESCs to my Rx throttle channel

works every time
Great idea! I'll have to get out my solder iron today and make one!
Apr 21, 2012, 09:48 AM
manual flying apologist
Adidas4275's Avatar
To be honest it was a recommendation by multiwiicopter.com when I built my first quad (scarab)

And it makes the feature of doing it through the board almost unnecessary.

I can see a little convenience, but I like not having to worry where the throttle is on my tx when I plug in my battery

Unlike every other RC I have
Apr 21, 2012, 10:55 AM
aka Helidaho
AeroVideoUS's Avatar
Quote:
Originally Posted by Adidas4275
To be honest it was a recommendation by multiwiicopter.com when I built my first quad (scarab)

And it makes the feature of doing it through the board almost unnecessary.

I can see a little convenience, but I like not having to worry where the throttle is on my tx when I plug in my battery

Unlike every other RC I have
Yeah I accidentally went into throttle calibration mode once after they had changed the firmware. The throttle stick wasn't even that high. So then I had to do it again and it was still not right (apparently a known bug). Once I went through one by one with the Rx all was well again.

Paul
Apr 21, 2012, 12:05 PM
manual flying apologist
Adidas4275's Avatar
Yeah really I think it is an unnecessary feature that is solving a problem that doesn't exist.....
But perhaps I am in the minority and they have had a lot of requests from people who are recalibrating their ESCs regularly...... I have only calibrated them once... When I built the heli and connected the Rx.

Is there something that I am missing.
Apr 21, 2012, 04:46 PM
JZSlenker's Avatar
I have never had to re-calibrate. I use the opto isolated RCT escs and have them all set to fixed throttle points. Works great!
Apr 22, 2012, 01:38 AM
Registered User
Taking about ESC calibration, I have built five multi-rotors, one hexi, one octo and three Y6's and have never had to reduce the throttle trim on my Rx to get them to arm properly. It is only now after George mentioned it that I have started to use full minus trim. I was just wondering what problems others were having by not using minus trim on their TX's?
Also I use all the power wires connected from the ESC's to the Pro board on all my builds and never had a problem, I was also wondering what the benefit is of just having one power wire connected besides reducing the redundancy to the main board?
Last edited by michael f; Apr 22, 2012 at 01:39 AM. Reason: xx
Apr 22, 2012, 09:52 PM
Sky blue near dusk
S11D336B's Avatar
It's more to make setting up new quads easier. Especially with 8 motors. There really isn't ever a need to re-calibrate.

Quote:
Originally Posted by Adidas4275
Yeah really I think it is an unnecessary feature that is solving a problem that doesn't exist.....
But perhaps I am in the minority and they have had a lot of requests from people who are recalibrating their ESCs regularly...... I have only calibrated them once... When I built the heli and connected the Rx.

Is there something that I am missing.
Apr 22, 2012, 09:58 PM
manual flying apologist
Adidas4275's Avatar
good to know, i like my 6 way Y that I made up


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
For Sale Mini Vbar 5.2 with 1 spektrum sat & cables (4.0 black upgrade to 5.2 software) SOLD skyking1 Aircraft - General - Radio Equipment (FS/W) 2 Feb 08, 2012 11:46 PM
For Sale Mini Vbar 5.2 with 1 spektrum sat & cables (4.0 black upgrade to 5.2 software) skyking1 Aircraft - Electric - Helis (FS/W) 0 Feb 07, 2012 05:28 PM
Discussion calibrate ESC with board & 3.1.515 software gweleps Aerial Photography 4 Dec 20, 2011 11:53 AM
Discussion How do you calibrate ESC with S-bus? milo12 Multirotor Drone Talk 5 Oct 19, 2011 09:25 AM
Help! calibrate ESCs with throttle or use fixed setting? JZSlenker Aerial Photography 3 Sep 22, 2011 04:18 PM