Epic Robotics

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Shakey
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Re: Epic Robotics

Post by Shakey » Thu Feb 25, 2016 9:47 am

Now I'm excited!

The afro brushless ESC's can be made reversible escs quite easily.
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Alex Shakespeare - Team Shakey / Nuts And Bots / Team Nuts:
AWS 44, 45, 49, 51 & 55 Winner - Far too many robots!

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EpicentrE
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Re: Epic Robotics

Post by EpicentrE » Thu Feb 25, 2016 10:05 am

Thanks for the kind words!

I'm currently using the XC-6A from Micron. It works quite well, and while they do reverse quickly, I feel it could be faster. However, as far as I can tell the hardware of this board is identical to an ESC which is commonly sold under the name "XP-7A", which has a BLHeli firmware file available for it. So I intend to flash them with that and see how that affects performance.
Scott Fyfe-Jamieson, Captain of Epic Robotics. Champion of AWS38/41/42.
http://www.epicrobotics.co.uk

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Rapidrory
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Re: Epic Robotics

Post by Rapidrory » Thu Feb 25, 2016 4:04 pm

What motor is that?
Rory Mangles - Team Nuts

Robots: Nuts 2 and many more...

NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc

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EpicentrE
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Re: Epic Robotics

Post by EpicentrE » Thu Feb 25, 2016 4:29 pm

AP03, 2s version, also from Micron. Hobbyking sell it as well though.
Scott Fyfe-Jamieson, Captain of Epic Robotics. Champion of AWS38/41/42.
http://www.epicrobotics.co.uk

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Rapidrory
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Re: Epic Robotics

Post by Rapidrory » Thu Feb 25, 2016 4:45 pm

Ah cool, those are much easier to mount than the ones from HK that Pete and I use for our Nano spinners.. Shame they're quite pricy
Rory Mangles - Team Nuts

Robots: Nuts 2 and many more...

NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc

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EpicentrE
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Re: Epic Robotics

Post by EpicentrE » Wed Apr 13, 2016 6:29 pm

Here's what that brushless drive is going to be powering: articulated angled track pods. Because why not?

Image
Scott Fyfe-Jamieson, Captain of Epic Robotics. Champion of AWS38/41/42.
http://www.epicrobotics.co.uk

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Rapidrory
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Re: Epic Robotics

Post by Rapidrory » Wed Apr 13, 2016 11:06 pm

Super complicated, articulated, tracked, red... You're not building an antweight Hyperactive per chance?
Rory Mangles - Team Nuts

Robots: Nuts 2 and many more...

NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc

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EpicentrE
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Re: Epic Robotics

Post by EpicentrE » Tue Apr 19, 2016 8:47 am

I tried my hand for the first time at moulding silicon rubber tracks last night. I won't know if it was successful until I get home and open the mould up, but damn that stuff is horrendous to work with. It went everywhere and it took me about an hour of constant cleaning to get it off my hands. I should probably wear gloves next time...

Does anyone have any tips for working with this stuff? Even getting small amounts of it out of it's bottles in order to mix it was a nightmare, with it running down the sides of the bottles and making a huge mess. And then when mixed it was so viscous I could barely get it into my mould. I can only assume I was doing something (or everything) wrong.
Scott Fyfe-Jamieson, Captain of Epic Robotics. Champion of AWS38/41/42.
http://www.epicrobotics.co.uk

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Shakey
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Re: Epic Robotics

Post by Shakey » Tue Apr 19, 2016 8:57 am

I just have two sacrificial tea towels and a cutting mat put aside especially for silicone moulding to try and limit how much of a mess it can make.
Nuts And Bots - For all your components and ready built antweights!

Alex Shakespeare - Team Shakey / Nuts And Bots / Team Nuts:
AWS 44, 45, 49, 51 & 55 Winner - Far too many robots!

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peterwaller
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Re: Epic Robotics

Post by peterwaller » Tue Apr 19, 2016 1:31 pm

If its the same material as I used to try and measure it carefully but it didn't seem to matter much so I just pour some from each container into a small mixing pot.
I then use a piece of 3mm steel rod to mix it and then use that to drip the material into the mold.
As long as it is well mixed any you spill sets off on the bench is then just peels off.
I find a couple of washes in neat washing up liquid gets it off.
If you do use gloves they need to be non Latex or it stops the material setting off properly.

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EpicentrE
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Re: Epic Robotics

Post by EpicentrE » Thu Jul 21, 2016 10:48 am

The central section of the new Void is complete. Unfortunately, I won't be bringing this to the AWS; it's quite heavy at the moment, and while I could probably get the side pods completed in time, I'd have to dismantle quite a bit to get to the areas where I need to save weight, and I don't have enough time. I was hoping to have this done for the AWS, but between how busy I've been recently and the stupid heat I'll have to just run with the old one. It'll get done one day!

Here it is with the flipper down and the grabber open:
Image

And here's the flipper up and the grabber closed:
Image

The springs on the grabber should let it clamp down onto other robots quite well; the servo can go about 30 degrees further than the position it's in in the second picture, so even very thin section of robots should be grabbable.

(Also, I noticed after I took the photos that the back-right arm of the 4-bar mechanism isn't connected. Sorry!)
Scott Fyfe-Jamieson, Captain of Epic Robotics. Champion of AWS38/41/42.
http://www.epicrobotics.co.uk

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UserFriendly
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Re: Epic Robotics

Post by UserFriendly » Thu Jul 21, 2016 11:23 am

Looks really good Scott (glad you're not bringing it on Sat) :wink: :lol:

Are the springs there to just return it to position, or have another function like shock absorbing etc.?
Andy B - Team UserFriendly
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Trying not to take Antweights too seriously. I think I'm failing.
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EpicentrE
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Re: Epic Robotics

Post by EpicentrE » Thu Jul 21, 2016 11:30 am

Thanks! The springs are there to allow the grabber to clamp down without stalling the servo or breaking something.
Scott Fyfe-Jamieson, Captain of Epic Robotics. Champion of AWS38/41/42.
http://www.epicrobotics.co.uk

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EpicentrE
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Re: Epic Robotics

Post by EpicentrE » Wed Jul 18, 2018 4:15 pm

Phew, it's been a while since I posted here!

After attending the last AWS my motivation has returned, and that coupled with Void being pretty badly destroyed means I've been working on the design for the new one. You may recall - or read, if you scroll up - that I was a good way through building a new version when I last stopped attending events 2 years ago, but as usually happens when I return from a hiatus, I decided I didn't like it and so started from scratch.

One thing I did want to keep though, was trying out brushless drive. To that end, I've been designing this little beauty:

Image
Image
Image

This is a 14mm diameter wheel hub that includes a 10mm brushless outrunner and an N20-style gearbox. It mounts at both the back and with the D-shaft at the front, meaning that the gearbox itself rotates, turning the wheel. It's 20mm front to back, the wheel itself is 19mm wide, and you could have a final wheel diameter of just 16mm if you used a thin tread material.

The corners of the gearbox need to be filed down - which hasn't been done yet - but apart from that it's fairly quick and easy to put together once you've got the printed parts.

The new Void is designed around 4 of these, and I can't wait to get going on it!
Scott Fyfe-Jamieson, Captain of Epic Robotics. Champion of AWS38/41/42.
http://www.epicrobotics.co.uk

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Shakey
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Re: Epic Robotics

Post by Shakey » Wed Jul 18, 2018 4:48 pm

Now that is crazy and awesome!
Nuts And Bots - For all your components and ready built antweights!

Alex Shakespeare - Team Shakey / Nuts And Bots / Team Nuts:
AWS 44, 45, 49, 51 & 55 Winner - Far too many robots!

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