Hi, I am planning to design a motor driver based on VESC 6 but I wish to switch the in line current sensing to low side current sensing. May i ask is it possible? Will the current reading be same as in line current sensing? If it is not the same, how can I change the configuration in firmware and if I have different current opamp gain how do I change it in firmware? Thanks
Hello,
I ordered a VECS from DIYElectricSkateboard.com a little while ago. I needed to get at one of the connections under the plastic sleeve, so I just took the whole sleeve off. I think that was a dumb mistake. Does anyone know where I can order another sleeve? I assume it's some type of anti-static heat shrink. I did some Googling but I'm only finding heat shrink tubing for wires. If I can't find any then I think I'll just 3d print a protective case out of PETG or ABS and be extra careful not to short anything out.
System:
Batteries: Ownboard 2P10S XT-60 42V full charge
Motors: Torque 6355
Switch: XT-90 Loop
Input: RC Car Pistol Grip Transmitter and Receiver
eBoard worked until one of the two diy electric ESCs shorted out. I set up the board using vesc-tool and had no problems.
Now I'm using a flipsky Dual FSESC4.20
Plugged everything in and noticed the remote worked to spin the motors before running the vesc-project tool. Very promising!
So I'm developing a higher voltage version of the VESC 6. The mosfet driver I have in mind is the DRV8353. This would utilize 3 shunts on all phases but they would be from the low-side FET to ground instead of high-side FET to the phase of the motor like how the VESC 6 has it. Would this impact function if I were to use the same firmware as the VESC 6 or would there be some necessary changes?
So I made a mistake on my 4.12 VESC derivative I'm doing. I accidentally mixed up the phase and current sense signals. I have SENS1 to H1_VS, SENS2 to H2_VS, and SENS3 to H3_VS. I have SH1_A and SH1_B measuring H1 current and SH2_A/B measuring H3 current.
The correct schematics have SENS1 to H3_VS, SENS2 to H2_VS, and SENS3 to H1_VS along with the current sense opposite of mine.
Dear All,
I am just involved in a power design and I am affraid that I will need copper bus bars and heavy copper PCBs. I am searching on the web and not found any bus bar supplyier. I have found some PCB manufacturer who say to manufacturer such PCBs but, Can someone recommend me a copper bus bars supplyer? the same for PCB manufacturer 1oz-2oz thickness layer?
Thanks in advance,
Joaquin.
The FD6288Q is popular in drone ESCs, It has good specs (250V, 50V/ns, 4x4mm, 3-phase, 1.5A) and low price; ~50 cent.
Do you think it is worth trying the in a VESC variant?
What is your favorite 3-phase gate driver? (and why?)
Hello,
Im using the FSESC 6.6 Board from Flipsky with the motor lehner 3080 -> http://www.lehner-shop.com/en/inrunner/series-30/3080.html
The motor is running in FOC mode sensorless but with an negative current. thus, the speed controller can't work and the rpm raises to max.
How I can avoid this? Does anyone have a solution for this strange behavior?
Thanks a lot!
Alex
Hello,
I am using maytech mto91hbm-nh motors and the RPM measurement in the VESC tool is pretty good when the motors are spinning in one direction, but in the other direction the RPM measurement will suddenly spike to the opposite direction, which causes the speed control to fail (Seems the vesc stalls the motor when this happens, and i have to reload the motor config in order to make the speed control responsive again).
All four motors seem to have the same issue.
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.
