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Re: Sidecar pwm ports 5 and up aren't responding
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Re: Sidecar pwm ports 5 and up aren't responding
I'm wondering if the DB-37 cable made contact all the way when it was reassembled. It can't hurt to check the continuity on pins 5 and higher.
The other thing I'm curious about is, when you have the Jaguar on port 5, with code set for port 5, what is the Jag's light doing? Yellow solid or yellow blinking? |
Re: Sidecar pwm ports 5 and up aren't responding
the jaguars are blinking
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Re: Sidecar pwm ports 5 and up aren't responding
No code getting to the Jags. But the Jag power and PWM connections are good at the Jag end.
Definitely check the DB-37 pins 5 and up for continuity. I think there might be something with that due to the reassembly. |
Re: Sidecar pwm ports 5 and up aren't responding
Alright so somewhere between the cRIO and the Jaguars, the code is not connecting.
So testing 1 at a time to isolate the problem, I would try a different... 1. ...DSC 2. ...cRIO-DSC Cable 3. ...cRIO Module If you do this while the robot is Enabled then you can just look for the Jaguar lights to turn solid. For whichever item you changed that time (then works), the resonable idea is that it is that item... |
Re: Sidecar pwm ports 5 and up aren't responding
Davis, while I like your suggestion, it's just not feasible right now for this team. They're rookies, with one cRIO FRC-II and one set of modules and one cable. When you only have one, it's kind of hard to change them out. (Unless they can borrow one over the weekend at the local preship scrimmage.)
That's why I'm suggesting they check the DB-37's continuity on the higher pins; if it's the cable, they can rework it again. |
Re: Sidecar pwm ports 5 and up aren't responding
Ok, I was not aware of that.
I just looked at the assembly instructions; would you be able to use a Voltmeter (and use the ohms setting) and attempt to measure resistance by connecting 1 lead to say Pin 1 of male side and other lead to pin 1 of female side? (I will try that tomorrow, but should that sucessfully tell whether each pin is connected properly?). Or are there already better ways of testing, posted? |
Re: Sidecar pwm ports 5 and up aren't responding
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Re: Sidecar pwm ports 5 and up aren't responding
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Re: Sidecar pwm ports 5 and up aren't responding
my team has repeatedly had ports go out on sidecars. the only solution that we have found is to replace the sidecar.
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Re: Sidecar pwm ports 5 and up aren't responding
This happened to us. It turned out to be our ribbon cable to our C-RIO. FIRST gave it to us made wrong and we had to re-cut it, and we did it wrong too. We used the big cable from last year, and all ports worked fine, so I would suggest trying that.
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Re: Sidecar pwm ports 5 and up aren't responding
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Re: Sidecar pwm ports 5 and up aren't responding
Yea stop day is tomorrow, and we are having the same problem. It came from now where for us. We had our bot finally working and suddenly nothing. We have replace the sidecar but cannot get the PWMs to output to Jag/Victors. We are using the big cable from previous years, but I will have to check that tomorrow.
Any other suggesting anyone can give? I spend half the day troubleshooting the problem and cannot find anything other than the PWM output from the DSC. All motor control lights are blinking yellow indicating that my assumption is correct, but just cant find a solution. |
Re: Sidecar pwm ports 5 and up aren't responding
We got it working. The solution?
Remove the sidecar and replace it with another. Remove all wiring and re do it. Re-image and re-deploy code and a working bot we got just in time for stop build time :) |
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The re-image and re-deploy might be an option, but we're just about all out of time. |
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