Triangle Drive - 2016

Back in May I hinted that I may resurrect my triangular drive chassis that was designed during the 2013-2014 Toss-up season. This past weekend I finally finished the work I started back then, it’s not designed to compete (obviously) so this pretty much ends development of this iteration for now.

Here’s a quick recap of how I ended up with this design.

The original prototype from 2013.

This drive was created in 2014 and incorporated some my favorite ideas from that time, it’s the basis for this years drive, I use exactly the same construction with internal motors and allowance for either mecanum or omni wheels.

There’s a whole thread about that drive here.

In 2015 I was playing with the triple lift and used that 2014 chassis as the drive system.

and 2015 was all Flywheel control, I never did actually build a complete robot.

So here’s the 2016 final version.
4 Motor drive, speed gearing, two IMEs for keeping the motor current under control using the smart motor library.
4 Motor two bar (??) arm, torque gearing, single IME with PID for arm angle.
1 Motor intake, quad encoder that slaves the intake angle to the arm.
Weight, 13lb.
It only picks up single stars, no attempt at all on the cubes, it would need a better intake to compete but as I said development is over. Once it high hangs all power can be removed and it will not drop, the CG is such that there’s no need for a latch or anything.
Programming is all ROBOTC and is mostly borrowed from the “open source robot”.

The CAD showing how it high (almost) hangs.

and a short video showing off how bad I am at driving.


I’d like to see this be featured as some sort of “Minimum Competitive Concept” similar to how FRC does

1 Like

The frame is shaped kind of like the chair in the background :slight_smile:

Thanks for the inspiration, designs like this teach you to think about your robot design in other, more, err, exciting ways. Might have a go at building something a little more complex and awesome when I next have the opportunity as part of the programmers hiatus I am currently attending (my team wont let me anywhere near the robot :3).

1 Like

I just have to say, this thing is amazing.

Every time James posts a picture of a robot I am always blown away. Partially it is the wiring being done so well but I have to assume part of it is also the fact that the metal all looks pretty much brand new. It just looks so good.

1 Like

This is really cool! This is the first time we have heard of this, Its very creative and efficient. :3