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VESC BLDC problem


#1

Hi guys,
Just received my VESC from enertion and followed the instruction from http://vesc.net.au/ to configure the vesc. But once i updated the firmware to 4.12 (vresion of the esc) I get this problem:

I would really appreciated if someone could guide me through this.
Also i have to mention that as soon as I received the Vesc and plugged it to my sk3 6374 149kv, the motor would turn but as soon as I put some slight resistance to the motor (holding it ) it would stop turning. Really hope the Vesc isnt damaged.
Thank you in advance for helping me.


#2

You should download the according windows tool to the firmware.
And did you do the motordetection before testing, what battery and remote you use is also good info

Edit: Firmwares: https://github.com/vedderb/bldc (although I would flash it to 2.18)


#3

The bldc tool i have says it supports firmware 2.17 and 2.18. I did not do the motor detection before testing. And i am using a HK-GT2B from hobbyking as well as a 4 cell lipo. And can i flash the vesc with BLDC (using the usb connection) ?


#4

Yeah, you should just downgrade the windows tool to the firmware ur using which is 4.12 at this moment. Also 4s is maybe a little low for such a powerful motor


#5

How do i downgrade to v4.12? Any download links? Thanks


#6

4s is plenty to configure your VESC to start. I frequently use 3s (old/tired traxxas lipo - like 1300mAh) to do first connection and configure. Or lab power supply at 12v. Something Vedder used to suggest (and may still - haven’t checked).

Once motor detection is done and it’s configured - i use my 8s or 10s just fine.


#7

Yes thats what i thought as well.


#8

but you said you were running the motor

the motor would turn but as soon as I put some slight resistance to the motor (holding it ) it would stop turning.


#9

I use to have an older VESC and i could ride it with a 4cell battery with all my weight on the board. The motor should not stop so easily with just a slight pressure on it.


#10

http://vesc.net.au/BLDC-TOOL/Windows/OLD%20Versions/


#11

Ok just downloaded the older version of bldc tool (firmware 2.15) And i can get a detection. Everything works fine but when i press the trigger the motor spins from 0 to full power. How do I change that so its gradual?


#12

usually that’s correct if you already did the controller configuration, you just need to apply some load to it (mount everything and ride your board for example) - make sure that you don’t have wrong values before testing (current limits too hugh, max current ramp step still low), accelerate and apply load gradually