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mxus xf15 thermistor

ligi's picture
Submitted by ligi on Tue, 2021-05-18 09:43

Hi,

I am using a mxus xf15 on a VESC6-mkv - which works fine - but I am running into a problem with the temperature sensor.

Unfortunately measuring is a bit tricky here as I do not want to break the seal of the motor - but I found out that another mxus seems to use a KTY83/110 - so I was calculating the beta value from this one:

 

KTY83-110_snap.png

 

I cant get my scooter to work correct it make some strange sounds

Submitted by vallsta on Sun, 2021-05-16 03:19

Hello!

I rebuild my Xiaomi scooter but i cant get it to work, in air it works perfect but when i stand on it, its make some strange sounds.

Dont know whats the problem.

If you help me out and get this to work, i will donate you some coffe money ;)

 

Check Video:

Battery to motor voltage

Submitted by fazekas on Sat, 2021-05-15 16:03

Dear all,

allthough being a newbie to electric drives, I did study EE but am not best informed on BLDC. My collegue and I have the honor to build a car prototype which drives only with 6-10 km/h and we have a 24 V LiIon battery (7S8P). Now I have the feeling that our little motor, which is a 15 W, 24V motor rated for the 8S7P will juts not have enough power. So i think of changing the motor but have the difficulty finding one, which is rated for 7S8P. (24V).

Servo output control

Submitted by 007trains on Fri, 2021-05-14 15:16

I'm trying to control a servo based on ADC1 and ADC2 inputs, so far I've modified app_adc.c with servo_simple_set_output  and set servo enable 1 in conf_general

Compiled  firmware and uploaded but it seems there is no servo output,

everything else is working normally

What are the steps i need to do to output a servo signal through the servo cable?

Is there any examples where someone else has done this?

VESC 100/250: analog regen brake AND e-brake cut switch?

Submitted by fatty on Thu, 2021-05-13 01:16

On the VESC 100/250, I would like to use a second thumb throttle for light variable regen braking, as well as separate hand e-brake switches on the mechanical brakes to cut motor for emergency braking (without regen).  Is this possible?

It seems the brake throttle signal should be connected to ADC2 as Current No Reverse Braking, and the hand e-brake switches (in parallel) should be connected between RX and GND as CURRENT_NOREV_BRAKE_BUTTON.  Is this correct?

Thank you!

Minimum speed push cart using arduino

Submitted by BarBumble on Wed, 2021-05-12 09:29

Hi,

I have been building a pushcart using 2 HUB motors, VESC, and Arduino to control the VESC using U-ART (Rolling Gecko)

used the "SetRPM" function to control my speed with fast and slow toggle button to switch speeds

 

noticed 2 problems:

1. If I push the cart while walking to move it faster it will try to correct itself by stopping and going backward. I want to set a minimum speed and let myself push to go faster if I want. is there a way to set Minimum RPM without correcting if I go above it?

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