75v & 300a vesc (vesc75/300)

EFOIL.builders Electronics (ESC, remote, batteries)
25

That should work for all versions then.

26

I bought the 75/300 VESC and got the R3 version.

In my not finished build, I planed to use a separate Antispark Switch and a Reed Relay to cut the power from the Receiver when I am falling.

Now I read that and I will through out the Antispark Switch.

So I will not take the Risk to use the ON/Off Function from the VESC when I am falling.

So my question ist, when can those implementation for the new Firmware Update be implemented?

Thanxs a lot

1 Like
27

Any Idea why I am getting this error when I try to use my Android phone with the VESC tool App.

Each time I try to pair , my phone finds the VESC, but when I try to pair, I get “Pairing Rejected by VESC 52840 builtin”
I have cycled the power on both the VESC and the phone. Tried to pair repeatedly.
I had it connected and paired a couple weeks ago on the bench. But now I am having trouble.
Everything else seems to work OK.

28

Tried forgetting the bluetooth device on the phone and doing the pairing process again?

29

which bluetooth module do you have?

30

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I guess you paired it before, then reinstalled/updated the app/ changed the phone and not it rejects it because it doesn’t recognize you. Just reset the Pairing Done flag in the VESC Tool.

31

It is on the list for the next update. Currently there is quite a queue and I would expect this to be nailed within the next 4 to 8 weeks.

32

Thanxs for the info!
What do you think it is the best way for a emergency motor cut off?

Break the on/off from the build in switch
or
Break the Signal from the Receiver?

33

I have great experience with turning off the Remote, with I Fall og the board, hence cutting the signal. I have set VESC to cut 50ms after signalloss, works great!

1 Like
34

Cutting power can bear some risk for the VESC.

35

Power or the Signal from the Remote?

36

Thanks guys, I guess I was just doing something out of sequence. I had very little trouble when I tried to pair today.

37

Another vote for that kill switch feature

3 Likes
38

Hi, i will use the Power ON/OFF Feature with an external waterproof switch with buildin LED:
My question, how i can light on the LEDs when i powered on the VESC?

39

Can you not just connect it to one of The power pins on The vesc? Here is one example of a power switch to The vesc 6
https://www.vesc-project.com/node/1547

40

Just use any 3.3/5V pin and hook up a status LED. Once the VESC powers up, the LED will light up.

41

Any one have an input on the vesc wand , i plan on reconfiguring it into a a water proof housing? seems like a remote that will stay relevant to the 75/300

42

@Trampa could you clarify how to increase the max ERPMs on a 75/300 connected to a Flipsky 65161? Even though the vesc-tool is set for Max ERPM of 100,000, the motor will only go up to 13,000 (according to vesc-tool real-time data), where the Flipsky motor is rated for 16k+ RPMs. What setting am I missing?

Thanks -

43

erpm = rpm x nb pair poles
Rpm = motor kv x voltage batt x % duty

So you need to check if you read rpm or erpm and if it is rpm the correct number pair poles apply needs to be check

If you log only 13k Erpm ( on load or off load ? ) on 12s than yes there is a problem : check if you got 95% duty

Edit: for exemple if your motor is a 100kv and you run a fully charged batt 12s 50,8v
You should read :
100 x 50,8 x 0.95 x 3 ( nb pair pole ) = 14364 erpm off load

On load should be around 75-85%

2 Likes
44

Is anyone using a separate receiver battery or separate ubec with the vesc 75/300 or is the consensus to just use the supplied 5v from the vesc. Any issues with using a separate ubec?