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Unread 07-03-2015, 15:39
dzf209 dzf209 is offline
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Awesome Electronics Box!

Check out the new electronics box my team designed and built for this year's game. Last year our electronics was a disaster; speed controllers ziptied to gearboxes, relays mounted in inaccessible locations, wires everywhere (and unlabeled). This year we vowed to do better and this is what we came up with. It's a work in progress, so any feedback is greatly appreciated!

https://www.youtube.com/watch?v=klMEioarUds
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Unread 07-03-2015, 18:15
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Re: Awesome Electronics Box!

Here's a CAD render of the box in addition to the video provided above, in case anyone is interested.
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Unread 08-03-2015, 03:43
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Re: Awesome Electronics Box!

Very, very, very nice!
The only issue I see is the wago connections on the PDP being a bit of a hassle to get to but otherwise I dig it.
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Unread 08-03-2015, 04:43
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Re: Awesome Electronics Box!

That looks slick. Are you still able to access all the connections?
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Unread 08-03-2015, 12:42
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Re: Awesome Electronics Box!

Quote:
Very, very, very nice! The only issue I see is the wago connections on the PDP being a bit of a hassle to get to but otherwise I dig it.
They're actually not that difficult to get to, and actually, we haven't needed to touch them since we initially wired them up. That's one of the great things about CAD. In the model we made sure there was enough room to get our hands in and connect everything before we built it.

Quote:
That looks slick. Are you still able to access all the connections?
Yep, getting access to all the connections is as simple as undoing those four corner thumbscrews. Actually the biggest headache we had was the Anderson powerpole crimps. There's definitely some skill involved in crimping them. Once they're locked into place, they're great, but you have to make sure they aren't even slightly bent in order to get them to mate with the connector housing.
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Unread 08-03-2015, 14:54
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Re: Awesome Electronics Box!

Nice.

If I were inspecting your robot, I would want documentation that the motor connections are rated for 40 amps.
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Unread 08-03-2015, 15:12
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Re: Awesome Electronics Box!

Good tip! They're Anderson powerpole connectors rated for 45 amps. The wires are also the appropriate size, I'll make sure to print out a spec sheet.
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Unread 08-03-2015, 15:32
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Re: Awesome Electronics Box!

Great work! I love tidy solutions like this.
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Unread 08-03-2015, 15:34
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Re: Awesome Electronics Box!

Quote:
Originally Posted by rich2202 View Post
Nice.

If I were inspecting your robot, I would want documentation that the motor connections are rated for 40 amps.
For what rule?
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Unread 08-03-2015, 15:41
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Re: Awesome Electronics Box!

Very impressive! Gold Star for you guys.
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Unread 08-03-2015, 17:06
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Re: Awesome Electronics Box!

Very clean and flexible design. Well done! What CAD software are you using and what did you use to make that animated CAD model?
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Unread 08-03-2015, 17:12
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Re: Awesome Electronics Box!

Quote:
Very clean and flexible design. Well done! What CAD software are you using and what did you use to make that animated CAD model?
We're using 2014 SolidWorks. For the render I used a motion study in SolidWorks with the PhotoView 360 package. The final movie was made with Windows Movie Maker.
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Unread 08-03-2015, 20:12
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Re: Awesome Electronics Box!

Quote:
Originally Posted by orangemoore View Post
For what rule?
Quote:
R39 Branch circuits may include intermediate elements such as COTS connectors, splices, COTS flexible/rolling/sliding contacts,
and COTS slip rings, as long as the entire electrical pathway is via appropriately gauged/rated elements.
The way I read this means that the connectors must be rated for at least as much current as the breaker that feeds the branch circuit.
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Unread 08-03-2015, 21:06
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Re: Awesome Electronics Box!

Quote:
Quote:
Originally Posted by orangemoore View PostFor what rule?

Quote:R39 Branch circuits may include intermediate elements such as COTS connectors, splices, COTS flexible/rolling/sliding contacts, and COTS slip rings, as long as the entire electrical pathway is via appropriately gauged/rated elements. The way I read this means that the connectors must be rated for at least as much current as the breaker that feeds the branch circuit.
That's how I would interpret it too. Even if it wasn't a rule, it would be silly to protect the circuit with a 40 amp breaker, but use connectors that would fail below that current rating. Here is the data sheet in case anyone is interested in using them.

http://www.alliedelec.com/images/pro...S/70162308.pdf
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Unread 08-03-2015, 21:12
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Re: Awesome Electronics Box!

How's the heat dissipation? Looks like it could get a little hot. Awesome job!
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