General discussion

Hello All,

I am working on using a VESC 6/75V to control the rear wheels of a mobile robot. The singular BLDC motor goes through a 22:1 differential gearbox to move both wheels: https://ibb.co/p4sZp7J

I am able to use the motor in sensorless mode after FOC detection; however, the motor is quite jittery at low speeds despite tuning the PID. I then decided to integrate a 4096 CPR ABI encoder on the rear output shaft of the motor to improve performance. 

Hi All, 

I have a Maker X HI 100 (VESC 6 based), running at 48V connected to a 1KW 26 inch hub motor, with hall effect sensors.

I have run a FOC detection and all looks good.

At regen levels greater than 50A, I get a strange vibration, almost as if the hub motor is desyncing.

I get a similar vibration under acceleration above 70A, but I would imagine this is due to core saturation as I am greatly exceeding the power rating of the motor. 

Any suggestions? Thanks!

Is there any way to adjust the PID of braking?

When I lift off (full brake) while at around 20% speed, I often get an ABS max current fault. I am testing this on the bench with a mass attached to the motor shaft to provide some inertia.

PPM input, Duty Cycle, 12S, Trampa VESC 6 MKV, fw 5.03 and 6.00.

I tried 5.02 and it does not have this problem.

I tried adjusting Motor Current Max Brake and Battery Current Max Regen, but no change.

Why not make an area for DIY project? I mean projects that involve VESC-parts.

/Magnus

Hello all

I have been working on a modded electric scooter using the Flipsky 75100 ESC. I have combined some batteries and am doing 84V top.

The esc is configured for BLDC mode and i'm using current control over CANbus from an esp32.

My problem is this:

I am able to control the acceleration and current perfectly fine up until the scooter hits around 30 km/h where it will suddenly accelerate even harder, even though the input hasn't changed.

Hi all.

I found this site and it looks very impressive. Also I think it is perfect to get my problems solved 😊

My problem is:

I need some motor controller for a 1.5kW motor, 58V. I think the 75/300 suits here very good.

My questions are:

1. Do you have any idea to have good "test motors"? Where can I buy these?

2. Is here somebody who can make a lecture in an online meeting? This would save a lot of time for me. Of course I would give some money for that.

Thanks :)

Alexander 

Hello everyone, 

Does anyone know the frame-size of VESC 4.12 on the firmware version of 5? I am trying to read the response of the motor, which send back to VESC through this method. But, it returns NONE. It might be the wrong frame-size. Has anyone ideas on this? Or any better solution?

Anyone able to help me here?

I can see this new VESC doesn't have a switch to change the sensor voltage from 5v down to 3.3v, has this feature been remove or am I missing something?

Cheers, 

Ali. 

Hi,

Hi! I have a zero 11x electric scooter, and i'm looking to go "big" when it comes to power. Right now i have about 7.2kw, 50A per wheel with basic BLDC controllers from Minimotors, and as we are speaking i am making a second battery to wire up in parallel to have a total discharge of 200A at 72v (20s). My question is the following: