That board sounds like a waste of space, also I dont carry a extra board with me for newbies to try 
4 Likes
This is what I meant.
HFI voltage should be the same for both motors, but it sounds like one of your motors might be a bit special. I really haven’t tried HFI on a huge range of motors and I don’t usually keep slightly broken motors around so it’s hard to know if that is the reason your motor is being funny. Sorry I am not more help!
3 Likes
I am getting this weird braking/HFI behavior on FW 5.02. I was previously on FW 4.00. I’m running HFI on a FSESC 4.20+ Dual with TB6355. Whenever braking, as soon as the tracking switches from sensorless to HFI there is a grinding sound and vibration throughout the board. The brakes are strong while decelerating until I get below the sensor less ERPM threshold and into HFI tracking then they suddenly become weak. The grinding only happens while HFI is on. The grinding increases intensity until the speed reaches around 1mph and then there is a jolt where the it goes away and braking gets super strong again.
Here is a video of me going down hill and slowing down at the same time.
You can hear clearly near the end of the video where the grinding goes away and suddenly breaking power returns.
Did you go through the whole setup process for HFI?
Yep, I used that exact video. My first time on FW 5.02 I just transferred the same HFI settings over from doing it the first time on FW 4.00 but just to be sure it wasn’t my old configs I reinstalled the FW and went through the whole HFI configuration again.
3 Likes
Adding this here as well.
1 Like
95% sure this is not FW related, this sounds like faulty hardware. I’ve had similar behavior with a damaged unity before.
3 Likes
Anyone running a unity with a VX1 on the newest version? Any issues?
I read about some issues previously. That may have been on the unity fw
Im having a similar issue with flip sky 4.20 plus… bkb 6354 motors… one of the motors is running 35 amps and the other around 50 amps on detection.
1 Like
Hey @Deodand if I wanna do motor detection on a motor that is larger than 2kg should I be doing it manually? Or just select the 2kg option and hope nothing breaks?
Mister Not-Expert here says he thinks it’s fine if the motor is bigger, just not smaller.
But disclaimer: I’m not responsible for broken motors or ESCs
1 Like
I only asked as the motor would be closer to 50kg than 2kg, mostly worried about esc
3 Likes
ohhh I know what motor that is 
can’t wait to see that build
been following the thread
1 Like
I only just realised for shits and gigs vesc should technically be able to get some spin, even though my esk8 battery voltage is only 25% of what’s required. Onward, for science!
5 Likes
Ladies and gentlemen I present to you the vesc powered Toyota Prius, coming to a dealership near you soon.
8 Likes
I hate listening to my own voice hahahah
12 Likes
Benjamin also has one in his garage. We just need to wait for the BIG VESC to arrive…
4 Likes
Yeah I’ve been waiting to see what Ben is planning with the bigger stuff, super interested
So the motor is only pulling 2 amps but it’s sitting at 95% duty cycle due to the voltage the motor takes, hence why it’s going so slow. I also can’t get the second motor spinning h because the parking pawl would be engaged.
Edit: oh shit I should be able to connect the motors encoder to the vesc for full foc operation, gonna take the transaxle inside tomorrow for more testing
6 Likes