Flipsky 75100 Pro v2 FW

Build, Repair & Mod
1

Hi,
I have the Flipsky 75100 Pro v2 with ALU PCB. I have followed [https://www.youtube.com/watch?v=QaVPISP8BF4]( Ludwig Bre’s VESC Setup video) for setting it up. It seemed to work OK (for my bench test), but the brake wasn’t working. I tried increasing the brake and regen limits to about 50%, but without success. I then noticed it was running 75_300_R2 VESC FW, and not 75_100_V2. Various online sources contradict each other on which FW I should use.

  1. Which FW is recommended to use? 75_300_R2 or 75_100_V2
  2. Would running 75_100_V2 fix the brake issue? If not, any ideas?

If it helps for diagnosis I am using the Flipsky 6384 140KV motor with the above on 12s4p (no BMS)

2

If you followed my video on the input setting step, the brake will only be applied very lightly if you let go of throttle, basically just enough to come to a Stillstand in 1-2s

You will have to modify the timing parameters so at no throttle or depending on your remote if you apply the brake you see -100% range I think however that may lead to problems when starting vesc, since it does not like to start at a non-0% input

So most likely you will need a remote that features a separate brake button

3

Thanks for the quick response. If I understand correctly in your video at 19:08 https://youtu.be/QaVPISP8BF4?t=1148 you are applying a 0.6% braking at zero throttle? I need to time mine properly, but it seemed more like 4-5s. I will try with brake enabled and disabled and see if there is any difference in time to stop.

4

Basically yes
Another thing to keep in mind: if you apply full brake all the time, the VESC will flow that current you set through the motor all the time - from connecting the battery until you are in the water and the motor finally gets cooling - this may harm the motor and for sure wastes energy

Maybe rpm-control with PID will solve your problem, this way at 0 Throttle the vesc will do everything to reach 0rpm. Meaning it will fully brake a spinning prop, and then stop the brake once it is at 0 rpm

However I find this mode rather unstable and fiddly

Duty control could also do that - not 100% sure though