Important Q/A forum responses

[Swan217]

Originally Posted by Billfred

Here's one that's going to get a lot of people, if it's not publicized...

I agree - this is a VERY important Q&A that will be missed.

Even though the rule makes a lot of sense in the theory of "all power from the robot," logistically, it's a disaster. Hypothetically this means that you cannot use an offboard battery to power the compressor, even if you're using it at the competition. Why? Because the battery to power the compressor would count as a SECOND battery, and you're only allowed one battery to power your robot per match. Teams will HAVE to find a way to "port in" to their robot to power the compressor (like an electrical outlet). This is easily accomplished by having a couple of unused Anderson Connectors attached to the outside frame of your robot, connected to the rest of your wiring harness. Just plug, pressurize, and go!

[Al Skierkiewicz]

Please remember that at the base of this issue with off board compressors is the need to demonstrate that the compressor will shut down under RC control which precludes the need for the compressor to be powered through a spike from the same battery used to power the RC.

[Kevin Sevcik]

Originally Posted by Dan Swando

Even though the rule makes a lot of sense in the theory of "all power from the robot," logistically, it's a disaster. Hypothetically this means that you cannot use an offboard battery to power the compressor, even if you're using it at the competition. Why? Because the battery to power the compressor would count as a SECOND battery, and you're only allowed one battery to power your robot per match. Teams will HAVE to find a way to "port in" to their robot to power the compressor (like an electrical outlet). This is easily accomplished by having a couple of unused Anderson Connectors attached to the outside frame of your robot, connected to the rest of your wiring harness. Just plug, pressurize, and go!

I'm pretty sure an offboard compressor has always needed to be powered by an onboard robot battery. Atleast thats how I've always read the rule.

I'm much more concerned about the fact that ALL robot prep must happen with the competition battery. I understand the logic there, but keeping track of whether you're testing and debugging or actually resetting devices on your robot for a match will be a real nightmare. What if you've been debugging over lunch with a non-comp battery and parts of your robot end up in reset position and then you forget that you did so over lunch and don't re-reset them with a comp battery? I'm thinking that they'll almost have to be a bit lenient with this one and only come down on blatant repeat offenders. It's not as if you can scan the robot with a tricorder and find out if the quantum wave stat of the last electrons to course through it match a competition battery...

[Peter Matteson]

Originally Posted by Kevin Sevcik

I'm pretty sure an offboard compressor has always needed to be powered by an onboard robot battery. Atleast thats how I've always read the rule.

I'm much more concerned about the fact that ALL robot prep must happen with the competition battery. I understand the logic there, but keeping track of whether you're testing and debugging or actually resetting devices on your robot for a match will be a real nightmare. What if you've been debugging over lunch with a non-comp battery and parts of your robot end up in reset position and then you forget that you did so over lunch and don't re-reset them with a comp battery? I'm thinking that they'll almost have to be a bit lenient with this one and only come down on blatant repeat offenders. It's not as if you can scan the robot with a tricorder and find out if the quantum wave stat of the last electrons to course through it match a competition battery...

(Begin Sarcasm) Does this mean we have to use the battery to reset all stored power too, sine power is work over time and work is a change in energy. I mean so many teams are using gas springs, springs, latex tubing, gravity, etc. to activate mechanisms on their robot that they must clearly follow this poorly worded explanation by creating a Rube Goldberg powered off their battery to reset any and all mechanisms just to follow the rule because you know power is power and since it has to come from the battery all power on the robot must come from the battery. (End sarcasm)

The wording in that was poorly thought out but the intent is clear. They don't want you to use the old batteries in a way that may allow for them to get in the robot for competition. Don't lawyer like I did above and don't do something stupid like showing up to the field with an old battery on your robot or cart, and you'll probably be fine.

Pete

[Richard Wallace]

Originally Posted by Peter Matteson

... The wording in that was poorly thought out but the intent is clear. They don't want you to use the old batteries in a way that may allow for them to get in the robot for competition. Don't lawyer like I did above and don't do something stupid like showing up to the field with an old battery on your robot or cart, and you'll probably be fine.

Pete

Thanks for cutting to the chase, Pete. As you point out, the intent is clear. And competition officials will be looking for incorrect batteries in and around robots that are near the field. Inspectors will be looking at teams' pneumatics charging procedures in the pits.