General discussion

Hello.

I fried an focbox by pedaling my ebike @10 kmh and powering up the focbox.

It stuttered and started braking when I applied the throttle. On further inspection the high side mosfet on phase 2 was blown. Long story short gave it to a guy to fix who damaged the pcb gate got shorted to Vin and blew the dvr and I gave up.

Now I bought the VESC 6 from trampa boards. 

Hello,

Because they support FOC I'm thinking about using VESCs to control a small coaxial drone (500g to 1kg). Of course I'll scale down the power part, since I'll need around 5A max per motor.

Still I've found surprisingly few other attempts at using VESCs for drones. Is there a reason why VESCs wouldn't be suited for that kind of use?

(Also I expect around 4000 RPM max, so with 7 poles motors that's 28000 eRPM. I've read the v6 can go up to 150000 eRPM so I don't think speed should be an issue either.)

Thank you

So currently I have two 4.12 VESCs running two hub motors with two 36V battery packs.  This is for a robotic application so I want to have an e-stop between the batteries and VESCs.

Putting both batteries in parallel should just make a single larger capacity battery.  Would this have any adverse effects on the either of the VESC because now they are using the same supply? e.g. back-emf, droop, etc

Regards,

Seth

Hello,

I was wondering how possible it would be to implement a new control mode for VESC based ESCs which automates the process necessary for achieving the greatest possible electrical to mechanical conversion efficiency during acceleration of electric vehicles?

Hi,

I need some help :)

I have a 3D-printed actuator with 6:1 gearing. The position control works great, but since I gear it, I only get 60 degrees range of motion. Would it be possible to control on the encoder steps? or how can I get 360 - degree motion?

btw: here is the actuator

does anyone know if a vesc6 and a regular vesc will work together in a dual motor setup over can bus. ?

thanks

Hi, 

Sometimes, you are going to produce a bunch of boards paired with a suitable motor that works best with a motorconfig that is currently not the default. 

Then you might want to skip configuring the VESC through VESC tool for each produced board: Just flash the required binary and have the default config work out of the box. 

Hi all,

I'm trying to configure braking for use in speed controlled mode. The goal is have the motor control speed by regenerative braking with external force applying torque on the load.

I need to limit the torque applied by the motor, and ideally have the motor coast freely when the speed is lower then preset. I tried to achieve that by setting "Motor Current Max" to zero or other low value, while keeping "Motor Current Max Brake" at nominal value. However I see that lowering "Motor Current Max" also removes the braking capability.

So i just finished my board and has been working for a couple days.

Today i tried it and motor does not run. Connect to VESC tool and get fault when running and monitoring Real time data

Fault : FAULT_CODE_DRV

Current : 0.6

Current filtered : 0.1

Hello

I've got a persistent problem with one of my Vesc's (4.12), it seems to loose tracking at currents above 40A (motor)

If i set motor current to 35A it works fine, sort of fine around 39A and it's always a problem above 40A.. There are no fault codes or any led error-codes.

When it happens the current graph is all over the place and the erpm graph drops like a stone. The motor shakes/vibrates like crazy. Everything returns to normal if i lower the throttle input.

I've changed: