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Any issues with the DRV8323?

Submitted by shaman on Thu, 2019-10-24 21:50

I'm working on hardware that uses the DRV8353 and I'm using the code that supports the DRV8323. They are very similar when it comes to operation and registers. I am able to to go through BLDC motor detection and BLDC motor control but not FOC. Attempting FOC just returns a "bad detection" response. Was curious if anyone else had issues with using the DRV8323 code and going for FOC?

VESC - Motor will not start until a small kick is applied from a full stop despite using hall sensors

Submitted by 010203040506070809 on Wed, 2019-10-23 23:12

Hi everyone,

I’m using a 4.12 VESC and having some issues. The motor will not start until a small kick is applied from a full stop. For example, in the initial motor calibration wizard using VESC Tools, after you press fwd to test direction (to determine whether to invert phase wires) and you press rev afterward, the motor just stalls. Even after the motor is full configured, the throttle does nothing (using ADC input) unless I “kick” off the scooter.

Pulling fault codes without USB

Submitted by shaman on Fri, 2019-10-18 15:13

I've been developing hardware around the DRV8353RS. The registers seem identical to the already supported DRV8323R so I made some hardware configuration files based on the HD files to test with. The problem is that at power up the controller doesn't make it through the full boot process and blinks the fault LED. Additionally, I have fault LED being driven from the DRV8353RS fault pin. The controller fault light is blinking and the DRV fault light is on. USB does not connect so I'm not able to pull fault codes via the VESC tool terminal.

New to electronics, I have some questions about monitoring RPM

Submitted by Trent on Fri, 2019-10-18 08:01

Hi, I'm a senior in Aerospace Engineering and unfortunately I'm a bit lacking experience with electronics. I'm currently rapid prototyping submarines to optimize for range, and as far as the electronics go I've been a bit lost. The experimental setup is as follows; I fix my model submarine to a guide rail underwater and set the propeller to specific RPM. I measure the value of velocity and current drawn by the motor. What I've been stuck on is how I can set a Brushless Motor to a specific RPM, and how to read in the current to an Arduino.

Connecting the VESC6 plus with servo wires

Submitted by GreenPenguin on Wed, 2019-10-16 15:39

Hi all,

 

I would like to hook up and control the VESC6 plus to an adafruit PWM signal driver https://www.adafruit.com/product/815

The connections on the PPM is too small, so how would I do this? Anybody has a link to an Amazon page where I can buy such a cable with female servo wires to the female VESC6 specific connector.

 

Thanks.

(Not) Stator saturation

Stupidspencer's picture
Submitted by Stupidspencer on Sun, 2019-10-13 00:34

Since I finished building my prototype dual-double scooter motor powerboard about a month ago, I have been super happy with its performance. But I have had a bit of a bug in the system. I believe that bug is caused by stator saturation, but I would like if Frank or Benjamin or any of the more knowledgeable members could give me their opinion of whats going on.

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