We are grateful for those of you on this thread that have contacted us and provided us with additional data! (Keep it coming!) Although I admit that it may not seem like it on this specific thread, it still appears that a vast majority of teams are quite successful in using their Jaguar units. That said, we are committed to get to the bottom of the failures that appear to be occurring in clusters, and the jury is still out as to whether these cluster failures are due to hardware, software, component failures, or inadvertent misuse. We are still eager to hear from the following teams (with a few new ones since my original post):
47
71
103
957
1583
1678
1793
1836
2046
2171
Please contact us at
support@luminarymicro.com. Based on Friday’s data, we’ve added a few questions that should help us pinpoint what is going on:
0. What are the symptoms of your failure(s)?
1. How many Jaguars were powered up on the robot at time of failure?
2. How long had the robot been in operation when the failure occurred?
3. What sort of motor was being controlled? CIM? other?
4. Are the gear boxes coupled to one or two motors?
5. What was the power source? (Just in case it was not a 12V SLA battery)
6. What was the approximate condition of the battery? (fully charged, half, nearly empty)
7. How long since the last charge?
8. Was the battery isolated from the robot while it was being charged?
9. Other than the power source, motor and Servo PWM signal, are there any other connections to Jaguar?
10. Describe any other conditions leading up to the time when the unit failed.
11. Is there anything else notable about your robot?
12. What was the configuration of your coast/brake at time of failure?
13. Calibration: have you calibrated the Jaguar(s)?
Pictures of your setup are extremely useful, even if they are pictures taken by your phone. Please, send pictures!
Thanks again for answering our call for more information. We are continuing our efforts to identify root causes for the failures being reported. We will keep you updated with our findings.
Regards,
Scott