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View Full Version : RSL (Orange Light) Works, but not from the DSC


Seathan93
02-10-2011, 07:55 PM
So I've been having an incredible amount of trouble with the RSL (the orange light connected to the DSC not the green LED on the DSC). I plug it into a battery, it works. I plug it into the 12v slot on the PDB, it works. I plug the light into the DSC and...nothing.

Is there a way to convert the 5v on the DSC to 12v for the light?

If any of you can help I'd really appreciate it.

Thanks

Joe Ross
02-10-2011, 08:37 PM
Where are you plugging the light into the DSC? It should go into the header labeled RSL. That header provides 12 volts.

Seathan93
02-10-2011, 08:59 PM
We did plug it into the RSL header on the DSC. Everything else works. The light works at all other times except when it is plugged into the DSC.

kgzak
02-10-2011, 09:42 PM
does everything else work on your sidecar? do you have power to your sidecar?

Seathan93
02-10-2011, 11:22 PM
Yes, we have power to the sidecar. We took a multimeter out and tested some of the connections. The RSL connection seems to generate a large added resistance (probably from converting the 5v to 12v) and the entire side car works. We have been running our mecanum drive flawlessly (minus the few programming errors) for a few days now, but can never seem to get the light to turn on.

DSC: Powered, works, RSL LED blinks, PWM's function

Light: Functions when hooked directly to a 12v source or in the 12v plug on the PDB, but not from the DSC relay.

we've tried different sized wire, and flipping the light in ever possible configuration on the DSC. Nothing works.

Nick Lawrence
02-10-2011, 11:26 PM
Yes, we have power to the sidecar. We took a multimeter out and tested some of the connections. The RSL connection seems to generate a large added resistance (probably from converting the 5v to 12v) and the entire side car works. We have been running our mecanum drive flawlessly (minus the few programming errors) for a few days now, but can never seem to get the light to turn on.

DSC: Powered, works, RSL LED blinks, PWM's function

Light: Functions when hooked directly to a 12v source or in the 12v plug on the PDB, but not from the DSC relay.

we've tried different sized wire, and flipping the light in ever possible configuration on the DSC. Nothing works.

Do all three power indicator lights light up?

Have you been drilling near it? The Digital Sidecar is incredibly sensitive to small metal chips. It will do weird things or not respond at all. Blow out all the chips you can from it with canned air or from an air compressor, and see if that helps.

-Nick

Al Skierkiewicz
02-11-2011, 08:28 AM
Ian,
There is a surface mount LED next to the RSL output connector. Is that flashing when you enable your robot? That LED is in parallel with the output connector. If it is flashing then you have an issue with the RSL wiring. Most often if the surface mount LED is not flashing is that the DSC is not receiving power. All three power LEDs must be on. The +5 may illuminate when the DSC is connected to the CRio but not all three. The DSC must be fed from a dedicated 20 amp circuit on the PD connected to the connector next to the RSL connector.
***You do have the jumper in place on the RSL as shown in the wiring diagram?

EricVanWyk
02-11-2011, 10:02 AM
All three power LEDs must be on. The +5 may illuminate when the DSC is connected to the CRio but not all three. The DSC must be fed from a dedicated 20 amp circuit on the PD connected to the connector next to the RSL connector.

Al called it, this is the issue.

Power it from the PD and you should be good.

Alan Anderson
02-11-2011, 10:07 AM
Yes, we have power to the sidecar.

What you've said so far doesn't confirm that you are powering it correctly. Please tell us exactly how you are supplying power to the Digital Sidecar, so we can either rule out a category of possible problems or give you detailed instructions on how next to proceed.

Seathan93
02-11-2011, 12:36 PM
The +5 may illuminate when the DSC is connected to the CRio but not all three. The DSC must be fed from a dedicated 20 amp circuit on the PD connected to the connector next to the RSL connector. diagram?

Thank you for mentioning this. I had full faith in the wiring team's knowledge of the wiring diagram, and they told me over and over that it was supposed to be plugged into the dedicated 5v plug.

After you mentioned this I looked up the wiring diagram (I'm mostly a mechanical engineer so I'm not completely intamite with how everything needs to be wired) and sure enough the DSC is supposed to be connected to a 20A breaker on the side of the PDB not the 5v slot which is used for the Dlink. I suppose we could also have swapped the 5v Dlink onto the 5v slot and remove the 12-5v converter heat sink from the KOP. Would that also work? or does it have to be in a side port on the 20A breaker?

Either way the RSL works now thank you for the help.

-Ian

Al Skierkiewicz
02-11-2011, 12:48 PM
I suppose we could also have swapped the 5v Dlink onto the 5v slot and remove the 12-5v converter heat sink from the KOP. Would that also work? or does it have to be in a side port on the 20A breaker?

Either way the RSL works now thank you for the help.

-Ian

Nope,
The dedicated 12 volt output that should now feed the 5 volt convertor for the Dlink is specially designed to supply 12 volts even as the battery voltage falls to 5.5 volts and below. The power supplies in the DSC will regulate even with the battery down to about 6.5-7 volts and can handle short drops below that. Connecting a 5 volt source to the power input on the DSC will not provide the voltages required for the DSC electronics.

Seathan93
02-11-2011, 01:09 PM
Ok, thank you so much for your help.