pic: Team 624 2015 Offseason Tesbed

[Beaker]

Originally Posted by philso

That is pretty good performance. Does the amount of drift or the distance driven change if you reduce the acceleration to half or if you double it?

The distance does not change if we adjust acceleration, only the time it takes to travel the distance given. This is because the profile recalculates the motion profile with the new values. The drift also does not change.

[Jack S.]

Originally Posted by philso

Alternatively, you can install all your electrical components on a thin polycarbonate panel then attach the panel to the pan.

This is the approach we used with the testbed. However, I would have preferred to design the pan based on the electronics layout like you suggested, but we were in a time crunch. If we use a belly pan this season (I hope to, but in my memory I don't believe we ever have), we will most likely trim down the weight and base it off the electronics layout.

[shlynfrhm]

Hi, can any of you clarify what type of thin polycarbonate paneling you would reccomend to mount your electronics on? And what reccomended thickness? Thanks!

-Ashlyn

[philso]

Originally Posted by shlynfrhm

Hi, can any of you clarify what type of thin polycarbonate paneling you would reccomend to mount your electronics on? And what reccomended thickness? Thanks!

-Ashlyn

These last two years, we mounted all the electronics on polycarb panels. I think we used 1/8 inch thick polycarb both years.

In 2014, the components were pre-assembled onto the panels outside of the robot. The panels were then stuck onto metal panels in the chassis using Velcro. The polycarb panels were fully supported by the metal panels so we could have used 1/16 inch thick polycarb for these if we had any.

In 2015, the panel (about 16 x 22 inches) was riveted to the frame tubes and was only supported around the edges so 1/8 inch thick polycarb would be needed to prevent the panel from flopping around too much once the heavier electrical components were installed. There was a second polycarb panel mounted on the other side of the tubes with the pneumatic components mounted on it. Don't make the mistake of installing anything on the panels with screws and nuts. The nuts were inaccessible once both of the panels were installed.

[tomer]

Originally Posted by Jack S.

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Looks Awesome!

We have been working on something similar, without the chain in tube design though..

Could you elaborate about designing and assembling chain in tube systems?

In addition, what are the gearing ratios for the drive train? + Which sprockets are used? Any tensioners?

Thanks