Electronics Board Material Choices

Thanks - I had considered suggesting Sintra to our team, as I’ve worked with it in cosplay, but now I’ll steer clear and leave these things to @philso :slight_smile:

We use Starboard, which we get from one of our sponsors, a glass company. Its an HDPE sheet basically, but it has some texture. Its been great to work with so far, and it machines and cuts just like delrin, which it is related to

Carbon Fiber is pretty cool.

CAD is pretty cool, but I prefer the real thing…

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That is a piece of art! I like the wire manifolds. (I am a mechanical guy and I recognize that is probably the wrong terminology)

No words. They should have sent a poet. So beautiful. :cry:

Thank you - and I am saying that in place of the actual mentors and students that worked on it. The team really struggled to get it to this point. The amount we learned from building this thing is enormous - and we have one more (the competition module) to still build.

We are sending the Carbon Fiber out of shop for the next one. We recognize the amount of safety concerns are not worth doing this in shop. All of our cutting and sanding had to be done under water (we had to water abatement systems to deal with the dust). However, we did have a lot of fun and purchased some new toys - turns out electric tools do not work to well under water, so now we have built up our arsenal of pneumatic tools.

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We love using poly because it is easy to see through and rigid enough to support the weight of the controls, but we can still bend it so we can get good shapes.

Beautiful @Alex_Jurek! What are you using to group the powerpoles in the middle of the sandwich? Thanks!

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Reviving a dead thread, but I feel like I should give a +1 to carbon fiber. We’ve made custom carbon fiber baseplates in house since 2015, and they have always been wonderful. Super light, and super strong, the only catch is that you have to be careful of the fact that they’re conductive. However, this shouldn’t be a problem whatsoever if you’re careful with your wiring. Also, you could use Kevlar instead of carbon fiber fabric when you do your layup to eliminate the conductivity problem.

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We 3d printed one

As @Alex_Jurek hasn’t replied, it looks to me like these, or similar would work, though they don’t include the plastic bezel:

Laser-cut Polycarb.

https://cad.onshape.com/documents/a011a7d3d6da81b1d6cbe2ab/w/058380bd0f0b1319b67fc940/e/c775486e4dacd9eb40788841

C.I.S. 4607 Electrical Module
The two main plates are made of Carbon fiber which is cut with a water jet. the two plastic pieces in the middle for holding the Anderson connectors are 3D printed using PLA. we’ve used the module the majority of the season, it is best used if there are two of them quickly switch out, if you don’t have a second it might be a pain to take off a PCM to fix it after it dies twice…

I apologize about the lack of assembly instructions for the modules.

https://grabcad.com/library/c-i-s-electrical-module-1

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Does this get buried in the robot such that the motor controllers are no longer visible? What do inspectors say about that? Do you pull it out for inspection?

No, their control board is pretty clearly visible on the back of the robot:

Yes, it is very visible, we do have to open the top up so the inspectors can follow the wires, but they haven’t given us any trouble with it. we have our module placed forward the top of our robot behind the elevator. and since the talons are on the bottom we can see them through our elevator.