General discussion

Wondering if anyone might have thoughts about this:

Context:

Hello everyone,

I'm having trouble getting my underwater thruster to operate smoothly with the Flipsky Single 6.7 PRO ESC 60A Mini and the VESC Tool software.
The thruster has no bearing, a thin waterfilm is created as soon as the rotor starts to spin and this serves as bearing. It should be in sensorless mode as I don't have any hall sensors. 

Initial pull away is not happening.

I have been recently trying to control a Maytech Superfoc 6.8 with a MCU over CAN. It took me a while to realize but no matter what I changed on VESC TOOL, the the Superfoc 6.8 was running canbus at 500kbps. I have looked at the connections section in the vesctool but that shows up empty and changing the can bus speed in the general section does nothing, regardless of which can bus speed option I choose, the devices responds when my MCU is configured at 500kbps. My entire system runs at 1MBPS so is there a way to change the can bus speed on the Superfoc 6.8?

I've designed and built an ESC based on the F405 and separately the F407 (same clock chip), and was wondering what was needed to increase the maximum drive frequency into the 30-36kHz range. The ESC works beautifully for some applications like motors with lower pole count, but I have an application that requires a faster drive frequency of at least 30-32kHz. Right now, if I put the frequency too high, it looks liek the CWT is tripping. 

Hey everyone! I know there's a lot of people who have used UART protocol to work with the VESC over the years, but I am currently struggling hard with it. For context, I am not using Arduino, I am using an STM32L476RG Nucleo board and for the purposes of my project, I need to code it on the register level rather than using a library such as HAL or Cube. Has anyone done a project like this before or seen someone do this before and maybe has some tips? I am using VESC 4.12 and have updated all firmware.

Hi all,

I'm brand new to the VESC arena, and have just purchased a group of VESCs pre-owned. I'm worried I may have been taken to the cleaners. My hope was that even if a few of them worked, I'd be OK investment-wise, but my initial testing is troubling in that they all might be dead. If they are, I'm hoping some might be revivable.

I have have had a hard time finding basic setup guides apart from the typical wiring schematics, and no troubleshooting steps, so if some of the details below seem dumb, it's because I just don't know any better. :)

Is there a creative way to control braking voltage, and not current in firmware? Say you have a battery in parallel with the VESC which is in constant regen mode  and controlling an engine driven bldc, and with the load in parallel too. Rather than say Max Regen current is say 100 amps, a way to say Max Regen voltage is a function of instantaneous battery voltage plus 1 volt?

I'm trying to drive motors in RPM mode (with a propeller load), my project requires the RPM commanding. I've seen the YouTube videos where VESC is driving KDE motors and T-Motors so I purchased one KDE5215XF-22 and one U10-II KV100 to experiment with. What I'm finding is that in RPM mode, the motors are having a problem starting up - they studder and shake a bit and sometimes don't start - I'm not entirely sure why... Also, when running, they tend to wind up, which sounds like the integrator in the PID loop needs to be adjusted. 

I am new in this vesc forum, My hardware is the flipsky 75100. 20s Liion 21Ah.

My problem is when i brake, then the motor brakes not smoothly. It makes loud noise also.

Let me know what you need to know for helping me heheh i have searched and tried all settings but no one is working for me

It makes cutouts without reaching te currentlimit.

Acceleration is perfect, driving up the mountain excellent, only when i braking (video) is making wrong noises, like the hall are not working correctly

Halls are perfect instead.