VESC Will Occasionaly Timeout When Even A Little Throttle Is Applied

ESK8 Electronics
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1

Hey esk8 builders,

I recently built an electric long board. And it’s great! It works perfectly, hits 30, but there’s just one problem.

If I apply any amount of throttle from a stopped position, the VESC seems to have a 1 in 5 chance of timing out. When this happens it will start blinking red for about 3 seconds before going back to normal. I have no clue what causes this, and to my knowledge, it seems to happen at random. Doesn’t matter how gradually I apply the throttle and it’s pretty annoying.

The VESC comes from diyelectricskateboard. This one: diy-electric-skateboard-kits-parts/vesc-the-best-electric-skateboard-esc/

I’m sorry if I messed up with the tags, it’s my first time posting here, plus I have no idea if the problem could possibly be the motor, the VESC, or how I programmed it.

Thanks in advance!

2

get it to happen again but this time don’t turn off your vesc. plug it into bldc tool and go to terminal and type faults. let us know the output

3

Fault : FAULT_CODE_DRV8302 Current : -0.0 Current filtered : 0.3 Voltage : 37.55 Duty : 0.02 RPM : 429.5 Tacho : 475 Cycles running : 14 TIM duty : 718 TIM val samp : 383 TIM current samp : 23958 TIM top : 47151 Comm step : 2 Temperature : 29.02

EDIT: Ran it a few more times

Fault : FAULT_CODE_DRV8302 Current : -0.0 Current filtered : 0.3 Voltage : 37.55 Duty : 0.02 RPM : 429.5 Tacho : 475 Cycles running : 14 TIM duty : 718 TIM val samp : 383 TIM current samp : 23958 TIM top : 47151 Comm step : 2 Temperature : 29.02

Fault : FAULT_CODE_DRV8302 Current : -1.7 Current filtered : 0.1 Voltage : 37.58 Duty : 0.01 RPM : 2.5 Tacho : 483 Cycles running : 1 TIM duty : 554 TIM val samp : 297 TIM current samp : 24879 TIM top : 49165 Comm step : 4 Temperature : 30.07

Fault : FAULT_CODE_DRV8302 Current : 0.7 Current filtered : -0.3 Voltage : 37.58 Duty : 0.00 RPM : 4.6 Tacho : 486 Cycles running : 1 TIM duty : 263 TIM val samp : 10 TIM current samp : 26384 TIM top : 52747 Comm step : 1 Temperature : 30.04

Fault : FAULT_CODE_DRV8302 Current : 0.2 Current filtered : 0.0 Voltage : 37.58 Duty : 0.01 RPM : 7.6 Tacho : 487 Cycles running : 1 TIM duty : 554 TIM val samp : 297 TIM current samp : 24879 TIM top : 49165 Comm step : 6 Temperature : 30.15

Fault : FAULT_CODE_DRV8302 Current : 0.3 Current filtered : -0.1 Voltage : 37.53 Duty : 0.01 RPM : 12.4 Tacho : 20672 Cycles running : 2 TIM duty : 594 TIM val samp : 10 TIM current samp : 26384 TIM top : 52747 Comm step : 1 Temperature : 30.76

4

Yeah, I’m pretty confident in saying you have a faulty DRV chip :frowning:

5

Aw crap, is that my fault? What could have caused this? For future reference.

6

Could be DOA or settings. Can you post screenshots of your settings in BLDC-Tool?

7

Yea, they told me the VESC was pre-programmed for my setup and I’d be fine, plus for a week or so I couldn’t even program the VESC itself because they sent me a busted cable that I had to replace.

This is how it was set up:

bldcCap1.PNG1600×900 68.9 KB
bldcCap2.PNG1600×900 66 KB
bldcCap3.PNG1600×900 72.9 KB
bldcCap4.PNG1600×900 67.3 KB

8

Oof yea, that’s outdated firmware. You got the max current ramp step bug. The VESC or DRV will have to be replaced and you should load updated f/w on it.

See here:

9

Yep. @Jinra caught it; that’s at least part of your problem. If your VESC arrived with that firmware (ie you didn’t flash the firmware at all yourself) then I’d contact them for a replacement. That bug happened about a year ago, but has been lingering ever since. Either way, you’ll need a DRV replacement.