Search found 5 matches

by StevenCoral
21 Sep 2017, 14:58
Forum: General
Topic: VESC driving using ROS
Replies: 0
Views: 758

VESC driving using ROS

Hi all, to anyone with experience in ROS: I've been using ROS Kinetic with Ubuntu 16.04, running the VESC driver node by the MIT race-car group, found here: https://github.com/mit-racecar/vesc . All-in-all, the driver works quite well. I can publish duty_cycle topics to make the wheels spin, and sub...
by StevenCoral
21 Sep 2017, 14:48
Forum: General
Topic: [Solved] Wondering about quadrature encoder connection
Replies: 10
Views: 1340

Re: Wondering about quadrature encoder connection

Thanks everyone, I took off the filters and connected the AB encoder, it works well in BLDC tools. It is confirmed: A/B channels to Hall 1,2 connections. I was not tested but should work. DC mode was used. Now I have a different problem (non-hardware related), which I will post in another topic. Tha...
by StevenCoral
21 Sep 2017, 08:21
Forum: General
Topic: [Solved] Wondering about quadrature encoder connection
Replies: 10
Views: 1340

Re: Wondering about quadrature encoder connection

Perhaps the word "phase" was out of context and wrong to use at this situation. I have written encoder reading software several times, and from what I know is that when you have A and B channels, the fact that they are off by a quarter cycle enables you to get 4 times the resolution of you...
by StevenCoral
20 Sep 2017, 13:45
Forum: General
Topic: [Solved] Wondering about quadrature encoder connection
Replies: 10
Views: 1340

Re: Wondering about quadrature encoder connection

Thanks, basically position is calculated by the phase difference between channels A and B (quadrature), and the I is for correction in case of missed-out counts, which shouldnt happen on low-count low-speed encoders while using STM32 arm chips. even it does, i can handle a miss now and then. I'm als...
by StevenCoral
16 Sep 2017, 13:33
Forum: General
Topic: [Solved] Wondering about quadrature encoder connection
Replies: 10
Views: 1340

[Solved] Wondering about quadrature encoder connection

Hi all, I want to start by saying that I have been looking for the answer for days now... I have a VESC, and a brushed DC-motor. I want to connect to the vesc a regular, 2-channel (A/B), 700 CPR encoder (assuming quadrature counting). I have seen the videos, I understand that I need to unsolder the ...

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