Vesc tool 2.0 hfi help

Is this setting something other than 0? if so it will apply braking current (if your receiver is one that quits sending PPM when off, like hoyt) which will run HFI to get smooth braking.

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Yes, this setting is at 0

@Deodand Any other settings I should check ?

@ThomasL What remote do you have? Did you set the failsafe?

APS remote. If by Failsafe you mean the wheels get harder to spin once the remote is off, then yes.

You probably need to do something like this

except for your specific remote. Maybe contact the vendor if you need help, and let us know how to do it if you figure it out.

Also definitely try setting the PWM (“PPM”) pulselengths in the VESC Tool under App Settings > PPM > Mapping. Make sure you turn on RT APP on the right side first.

When you turn off the remote, the skate should coast. Anything else is dangerous.

I figured it out.

My remote PPM signal was actually moving all the time once on, from 1.6110 to 1.6250, which created some kind of issue based on the VESC PPM.

On the APS remote, there is a Trim nut to fine tune it (the remote has 2+ years), so you need to fine tune it in the VESC tool, and set the Input Deadband to match the difference between both PPM value (remote and Vesc) (in my case 20%).

No more sound coming from the board once the remote is off, I will try the HFI mode today :slight_smile:

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what is the highest reasonable hfi values? Watching the video and trying to get decent plots, I have to have a run voltage of atleast 20V to 25V and a high start at like 40V.

I don’t care about the noise, just don’t wanna mess up my motors.

@b264 @Deodand

The highest I think I have done is 28V

But there are some motors which just don’t like HFI and nothing I’ve found seems to work well, except not using HFI on that motor. :expressionless:

Some motors work freaking amazing with HFI, notably the @torqueboards 6380

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Thanks, so you’ve set 28V as the run voltage or the high start?

I’ve done so many of these I don’t remember but the highest number I see right here in my notes was for a Carvon motor

Follow the video carfefully and repeat multiple times and keep notes for best results

Some motors I just can’t seem to get working well, and if you have a cracked or loose magnet, fugget about it

Other motors work really well

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@b264 care to share your numbers for the torqueboards 6380? I struggle with vesc tool and HDI

@Soflo every motor is different, but try this

On dual drives you need to seriously jack up the Sensorless ERPM HFI, like double it, or at least have the left and right cut off at different times

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It should also be noted that certain VESCs also don’t like HFI.

The trampa VESC6 has had pretty good results with me. On the same motor an OG standalone Focbox has performed notably worse. What’s even more surprising is I’ve handled other derivative VESC 6’s that perform even worse than a 2 shunt focbox. All on the same motor and battery setup.

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Yeah @Deodand said the 2 shunt 4.x hardware should in theory work better with HFI, not worse.

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Theory sounds like a great place, I’d like to go there some day.

In all seriousness, my two focboxes both cannot perform HFI with the settings my vesc6 can. The noise is just wayyy higher. It’s entirely possible that a 2 shunt design would work better, but that’s not accounting for other potential performance benefits seen in later designs.

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We tried here back in Prague, CZ, the HFi on 2 sets of DD’s, one 90 KV, one 75 KV. We can now say that it does not work on them, we tried different settings, different voltages, no luck. The stutters are real !!

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I’ve had back luck with HFI on low Kv motors, small size motors, and motors that have an elevated temperature.

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@b264 what esc are you running?

Mostly FOCBOX 1.3, 1.6, 1.7 but also TB6

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