Search found 23 matches

by ChrisA
Fri Feb 15, 2019 1:26 pm
Forum: General Discussion
Topic: Questions about the safety wirings
Replies: 6
Views: 2737

Re: Questions about the safety wirings

I looked at your circuit diagram and photo. Just two more things you should do to make the power distribution be "best practice". One rule is that the purpose of a fuse is to protect the wires from overheating should that be damage that causes a short. SO while the battery is a high amp fuse, none o...
by ChrisA
Thu Feb 14, 2019 6:39 pm
Forum: General Discussion
Topic: Roboclaw stops with all LEDs off, power cycle required
Replies: 3
Views: 797

Roboclaw stops with all LEDs off, power cycle required

As said in the title. All the LEDs are off. From the user manual I'd expect any error condition to put the red LED is some state other then solid off. When I power cycle the Roboclaw it seems to start working again. I just refreshed the unit with latest firmware, perhaps now the firmware is ahead of...
by ChrisA
Thu Feb 14, 2019 6:21 pm
Forum: General Discussion
Topic: Using roboclaw with ros_control, and programming interface
Replies: 2
Views: 747

Re: Using roboclaw with ros_control, and programming interface

They provide exactly what is needed https://github.com/sonyccd/roboclaw_ros clone the above Change the "com port" to match the one for your system build with catkin_make. There is even a launch file that will start it. I've been driving a diff drive robot around for a few hours today then ran into s...
by ChrisA
Thu Jun 14, 2018 12:47 pm
Forum: General Discussion
Topic: Smoke released from 2x15 roboclaw.
Replies: 5
Views: 2237

Re: Smoke released from 2x15 roboclaw.

Tanks for you help. Yes I always test in that order, run motors open loop to verify basic operation and the direction s correct. Tun PID parameters in "Studio" then very simple tests using ROS. I was dong that last step when the failure occurred. I was worried the 2x15 might be under sized what I re...
by ChrisA
Wed Jun 13, 2018 10:51 pm
Forum: General Discussion
Topic: Smoke released from 2x15 roboclaw.
Replies: 5
Views: 2237

Re: Smoke released from 2x15 roboclaw.

Let's figure out what is happening BEFORE I send it back. Perhaps I need to buy a much larger RoboClaw controller. Which do you recommend? This is the load I'm driving: https://www.pololu.com/product/1563 It is a 6 wheel drive chassis. The unit was modified to add a pair of quadrature encoders to th...
by ChrisA
Mon Jun 11, 2018 7:49 pm
Forum: General Discussion
Topic: Emergency Stop Circuit
Replies: 9
Views: 3753

Re: Emergency Stop Circuit

What you are talking about is not an "E-Stop". It is a "Watch Dog". The different is that a watch dog has to kick some object periodically of the motors stop. An E-stop is a big red button about 1.5 inch diameter. You hit it and the machine stops. The button latches and must be rotated to un lock. T...
by ChrisA
Mon Jun 11, 2018 5:36 pm
Forum: General Discussion
Topic: Smoke released from 2x15 roboclaw.
Replies: 5
Views: 2237

Smoke released from 2x15 roboclaw.

I'm wondering what I could have done to have caused this... I think I can repair (or does warranty cover this?) it but I don't want to reconnect this until I understand the root cause of the problem. I have a 2x15 Roboclaw. I got it running with the ROS node driver and a keyboard teleoperation node....
by ChrisA
Sat May 26, 2018 12:08 pm
Forum: General Discussion
Topic: Roboclaw 2x15 - logic battery vs main battery
Replies: 9
Views: 3298

Re: Roboclaw 2x15 - logic battery vs main battery

If you are worried about "'correctness, grounds and safety, I see an error. You batteries are wired (+) -> (switch) -> (fuse). The fuse needs to the as physically and electrically close the battery is is possible. In the ideal case the battery would be inside a box and the fuse inside the same but. ...
by ChrisA
Sat May 26, 2018 11:47 am
Forum: General Discussion
Topic: How long to Warranty repairs take?
Replies: 1
Views: 1090

How long to Warranty repairs take?

Tracking shows that the package containing my defective Roboclaw controller was delivered to the factory on May16. It has been 10 days. I would expect to have gotten some kind of response.

Actually I am close enough that 1st class mail goes overnight so it could have been turned around already
by ChrisA
Mon Apr 16, 2018 12:33 pm
Forum: General Discussion
Topic: I think my new 15A Roboclaw has a problem
Replies: 3
Views: 1955

Re: I think my new 15A Roboclaw has a problem

The version is "V5D" I've tried a larger power supply. I have an old power supply from an old PC that can supply up to 16A at 12V. It trips too. But the circuit protection takes some number of minutes to reset I use the 9V battery because without it I loose power to the logic when the power supply f...