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How to use an IMU and a PPM remote parallel

Gos1's picture
Submitted by Gos1 on Tue, 2022-10-25 15:28

Hello,

(not beeing an expert in this topic,)I am currently working with a already given setup of two single Flipsky FSESC4.12  with 50A connected via CAN-Bus (parent child compound) to power a electric skateboard. There is an implemented inertial measuring unit that sends acceleration data to the parent via UART for further processing. Additionally, I have a Bluetooth low energy module connected to the child but it was only used for setup reasons since now.

GPIO Pins on VESC?

Submitted by phils on Sat, 2022-10-22 17:58

Hello,

My friend and I are students at the University of Michigan and we are trying to create an electric longboard for our embedded systems class. We have decided to get an off the shelf VESC for our project and are having some issues determining whether or not we will be able to interface with one. For some context, we are working with a budget of $1000 dollars.

Is this kogging and jitter in low rpms expected?

Submitted by Snabelost on Sat, 2022-10-22 16:53

Hello,

Im working on my dual boat motor for my fishing boat. Yesterday I connected the motors for the first time. The motors in Flipsky 65111 and ESC is FLIPSKY Mini FSESC6.7 PRO 70A.

I have run the FOC wizard and it detect the motor and everything is working. However at low RPM the motor runs pretty hard and it is impossible to run it at low rpms. See the video:

https://youtu.be/z02HhbUDVr0

Is this expected or can I adjust anything?

/Magnus

Inconsistant braking force when full brake starting to apply

Submitted by Koxx3 on Sat, 2022-10-22 16:21

Hello,

I am using the Spintend VESC 75/100 v1 (FW 5.3) on an escooter.

I drive the VESC with an ESP32 APP with CAN bus. It uses the COMM_SET_CHUCK_DATA message at 30Hz to give orders (so, little delay).

It works really great... except one thinkg (sometimes scary) : when I press full brake, it never react the same way.

Sometimes, it brakes strongly & instantly, sometimes, there is a delay (~200-500ms) with really low braking force (even if brake is pressed at max during this time), then it apply full braking force.

Dual motor setup for Turnigy SK8 V2 60A x 2 3~12S Twin Motor Skateboard ESC?

Submitted by fil02184 on Tue, 2022-10-18 04:07

Hey yall,

 

I'm trying to set up this ESC (link) with two motors. I have this flipsky remote connected to one of COMM ports over UART. I'm only able to get it to control one motor at a time (depending on which side of the ESC i plug it into) but not both. 

Vesc edu 6 with 2800Kv brushless motor speed control

Submitted by siklopentan on Sat, 2022-10-15 14:34

Hello, 

I am new to brushless motor control so forgive me if my question is incomplete or basic. I am currently building an autonomous race car on a 1:10 scaled car chassis. I am wondering if I can use 2800KV sensored motor with Vesc6 Edu for rpm control. 

My robot has:

2S lipo,

2800 Kv sensored motor ( https://www.hobbywing.com/goods.php?id=605&filter_attr=5435.0.0.0.0.0.0.... )

Help needed in controlling multiple VESC boards (multiple motors) with VESC ROS (need to debug errors)

Submitted by shreyas.srinivasan on Thu, 2022-10-13 08:13

I modified the following files in VESC ROS : https://github.com/sbgisen/vesc to get the proceeding errors when I was trying to control 2 motors using the VESC ROS Interface.

Modified code of "velocity_control_sample.launch":

""


<launch>

UAV motor BLDC detection fails

Submitted by Torbjorn on Wed, 2022-10-12 13:54

Hi

I am attempting to detect parameters with BLDC mode, but it fails.

The motor is an Axi 8120/08 (675 g, Kv 190)

The VESC is v6mk5 running fw 5.30.

After tuning the detection parameters to:
I = 3 A
w = 500 ERPM
D = 0.04
It looks like the routine is completed, but I still get "Detection failed." instead of results, and in the lower right corner it say "Bad detection results receiced" with red background.

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