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Third Party Hardware

Driving Issues Due To Reversed Current Amplification

Submitted by F4metz on Mon, 2018-12-17 16:45

Hi,

I cloned the VESC MINI4 into a different form factor that was mandatory for my project. Due to layout reasons i reversed the current amplification, so the phase current is measured negatively (reversed IN+ and IN- at the amplifier). I thought this can easily be solved by inserting a negative amplification gain. This is not the case as I noticed and after digging deeper into the code I got an idea why, but I am not able to solve it inside the code.

HW4.12 Firmware trouble

Submitted by CTSchorsch on Wed, 2018-12-05 21:09

Hi Forum,

i have a VESC HW4.12. I updated the FW via VESC Tool to the VESC_default.bin. After that, and waiting 10s i tried to reconnect, but the USB Device is not recognized on my pc.

I can download newest FW from GIT and newest bootloader via ST-LINK, but the VESC is still not working. No ttyACM device...

Is there anything i made wrong ?

 

Regards

Georg

Differential steering with 2 VESC driving 2 BLDC in FOC mode with joystick

Submitted by unimotion on Sat, 2018-11-10 18:59

Hello I'm looking for a first advice about how to control my robotic chair project 

Here is what I can do now:

I'm able to move my robotic chair on a tank like mode : 2 BLDC motors each motor connected to it's own VESC, each VESC wired to one channel of an RC receiver that receives signal from a RC transmitter (Flysky FS6) on wich I have setup 2:channels mixing to get differential steering. It works very well !

Maytech VESC duty cycle & PID control problems

Submitted by subodh.malgonde on Mon, 2018-10-01 11:49

I am using the VESC Tool to configure my Maytech VESC. Hardware 4.12 and firmware 3.40. I am using a 3S LiPo battery. The motor is Velineon 3500, used in 1/10th scale Traxxas RC car.

These are my BLDC Sensorless settings:

  • Startup boost: 0.1
  • Cycle Integrator Limit: 39.5
  • Min ERPM: 200
  • Min ERPM Integrator: 800
  • BEMF Coupling: 450

The 'BEMF coupling' and 'Cycle Integrator Limit' values were determined using "Detect BLDC Parameters" functionality of the VESC tool.

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