General discussion

Hello all

I have been working on a modded electric scooter using the Flipsky 75100 ESC. I have combined some batteries and am doing 84V top.

The esc is configured for BLDC mode and i'm using current control over CANbus from an esp32.

My problem is this:

I am able to control the acceleration and current perfectly fine up until the scooter hits around 30 km/h where it will suddenly accelerate even harder, even though the input hasn't changed.

Hi all.

I found this site and it looks very impressive. Also I think it is perfect to get my problems solved 😊

My problem is:

I need some motor controller for a 1.5kW motor, 58V. I think the 75/300 suits here very good.

My questions are:

1. Do you have any idea to have good "test motors"? Where can I buy these?

2. Is here somebody who can make a lecture in an online meeting? This would save a lot of time for me. Of course I would give some money for that.

Thanks :)

Alexander 

Hello everyone, 

Does anyone know the frame-size of VESC 4.12 on the firmware version of 5? I am trying to read the response of the motor, which send back to VESC through this method. But, it returns NONE. It might be the wrong frame-size. Has anyone ideas on this? Or any better solution?

Anyone able to help me here?

I can see this new VESC doesn't have a switch to change the sensor voltage from 5v down to 3.3v, has this feature been remove or am I missing something?

Cheers, 

Ali. 

Hi,

Hi! I have a zero 11x electric scooter, and i'm looking to go "big" when it comes to power. Right now i have about 7.2kw, 50A per wheel with basic BLDC controllers from Minimotors, and as we are speaking i am making a second battery to wire up in parallel to have a total discharge of 200A at 72v (20s). My question is the following:

I'm curious if someone has guidance and/or tuning tips for utilizing vESC in a propeller load (fixed-wing) scenario with duty cycle or speed/rpm control and FOC motor control.  The biggest issue I'm experiencing is a lock-up and stutter/screech when increasing input via speed or rpm control (using UAVCAN input) fast from a 0 ERPM start.  Once the propeller is spinn, say ~5000 erpm, then rapid increases are a non-issue.  I'm assuming what I'm experiencing is the observer losing tracking because the motor can ramp fairly quickly without a constant load (prop vs surface). 

brand new flipsky 6.7 dual fsesc, anti spark switch, and vx4 remote

constant power to esc, switch wont turn off, and motors wont turn, no cogging or anything.  remote is connected successfully so i dont think that is the issue.  

they worked fine during the set up 

Hello,

I just buy a 65121 flipsky's motor and a "Flipsky 75100" ESC. My goal is to make a counter current swimming machine. So i don't use a remote, but a PWM control knob.

I followed some tutorial, and i managed to make it turn, but the current is too low at 95% duty cycle.

Do you know how can i increase that ? 

The perfect case would be to have a amount of current compared to duty cycle. 

Thanks for your reply

hello can someone tell me what is the best vesc for our purpose for a boat for fish watching for several months in the sea. Longevity and efficiency is the most important thing here,  but also electrical or acoustic interference should be reduced to a minimum (the motors are most likely only operated at approx. 125W and low speed. Motors with sensorless 70kv 48v and approx. 30A should be operated (the manufacturer writes but you should min. 100A esc use why we haven't understood yet)