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Harsh noise on rapid/high current acceleration, please help! (with images and video!)

steveeng's picture
Submitted by steveeng on Sat, 2024-12-28 15:56

Hi, I am currently working to tune a VESC to power a vehicle with 4214 Xing Quadcopter motors (660kv). I am turning a flywheel with the motor to provide some resistance and also measure the motor's torque. It was all going well until I started to up the current limit, at 75A a harsh noise started coming in that sounds like loose bearings but I believe it is actually due to the motor and how it is being controlled.

Electric Wheelbarrow project

Submitted by Matn on Thu, 2024-12-26 22:17

Hello,

I buy 14.5 inch Electric Wheelbarrow Hub Motor kit (48V,500W (https://www.aliexpress.com/item/1005004115893822.html?spm=a2g0o.order_li...)). Together with motor I received driver and throttle which can regulate speed between 20 and 40km/h but I would like have walking speed (around 5 km/h.)

Is it possible to use VESC, MAKERBASE or FLIPSKY speed controller and set speed around 5 km/h and same time max torque? 

throttle set up

Submitted by TONY61 on Wed, 2024-12-11 16:48

Ive got a makerbase 75100, wired it up and set it up as best I can, I must say I have used all sorts of motor/servo controlers for cnc machines,and this vesc stuff is the worst I have come across for tutorials!!

Anyway, ive got a standard ebike 4.5 v throttle linked to adc1, it works but just like a switch either on or off.

I can only assume its because in the input setup it wont allow you to go above a 3.3 input voltage, the output is 5 volt, how do i get it to accept 5volt input?

Regards

Tony

Tach output changes when switching from BLDC --> FOC

Zoxks's picture
Submitted by Zoxks on Sun, 2024-12-01 20:28

We recently switched our fleet of robots from running in BLDC mode to FOC mode. In doing so, we noticed that the reported distance from each motor (which reads from the tach value) changed dramatically. In BLDC mode, we noticed a +- 5% difference between any given robot's reported distance (for the same actual distance traveled). once switching to FOC mode, the motors started reporting up to 200% the actual distance traveled.

Use IMU for keeping direction

Submitted by arnolde on Mon, 2024-11-25 11:12

I'm building a large robot (>100kg) for farming tasks. First usecase will be autonomously raking the sand smooth on a 20x40m riding arena.

It has a 2-wheel rear drive (left+right motors with free swivel wheels at the front) and skid steering / tank steering. I use a dual VESC and an ESP32 for controlling it, steered via bluetooth with a PS3 controller. It works well so far with 2-stick-steering, but now I want to switch to 1-stick steering (Y axis for speed, X axis for steering), in preparation for the following step which will be automomous driving.

Difficulty Tuning HFI on Hoverboard Motor for Low-Speed, High-Torque Application

Submitted by Ponps33 on Tue, 2024-11-19 10:29

Hello VESC Community,

I am trying to configure HFI on a hoverboard motor using a VESC6 MKVI for an application requiring extremely smooth startup with low speed and high torque. Despite following the video tutorial for HFI tuning, I am encountering challenges specific to this motor. Here are the details:

Motor Specifications:

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