Cranberry Alarm Ri3D is a new team formed of alumni and mentors in Greenwood, Indiana. Our goal is to be a resource to teams in our area and around the world, by displaying how to easily and efficiently build a competitive robot with accessible resources and materials. We plan to post short, detailed videos throughout the duration of the 72 hours following the launch of the 2023 FRC game.
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Thank you to our supporting teams
Cory provides an overview of the prototype pneumatic cone righting mechanism:
Reis provides an overview of the prototype manipulation mechanism.
Reis provides an overview of the drivetrain.
can it pick up upright cones
Cool! Will you use standard wheels or might you try some other type?
We designed it to be able to pick upright cones as well, but similar to tipped cones, we had pretty inconsistent results based on our testing with this design.
We’ve talked about potentially using other wheels, but decided to stick with these until the whole robot is together. Once we get the robot together and driving, as well as have a better understanding of the center-of-gravity, we may switch up the wheels that we use.
Reis and Kevin demonstrate the effectiveness of several different kinds of intake wheels.
Cory and Reis provide an overview of the progress we’ve made at the end of Day 2.
Fantastic work by a new team! Looking to be a highly effective Ri3D both for any comp you may do and for helping the greater community.
Looks promising! Nice work 
Can’t wait to see how you run that pivot up and down
Amazing work! I also imagine you could add the rotating grabbers like Ri3D Redux’s version pictured here:
We made HUGE progress today! The robot is done! Everything is working! In the morning we’ll be filming more of the robot, as well as detailed explanations of the final systems, as well as an overview. 
Here’s a little sneak peek until that all is released. 
This is my favorite Ri3D concept this year. Nice work!
Looks great. Can you provide either cad files or some more close up pics of the gripper assembly and how you modifies the carriages?
Yes! CAD will be posted later this week (either Wednesday or Thursday). During the overview video, we will make sure to get ample close ups of every system. So keep your eyes peeled for when we release that later today.
Reis and Cory provide an overview our final 2023 RI3D robot!
In the next few days, we’ll be posting our CAD, technical documents, and additional images.
Our final code is available here:
If you have any questions, or would like more details on something, feel free to ask away, we’ll do our best to answer them!
Great work. I think you made an elegant design choice lining up your extension with the angle of the grid, and it paid off in a capable but simple robot. A little more complexity might be needed to make a gripper that secures cones but doesn’t pop cubes.
Did you evaluate whether this can pick up off the substations?
I see the arm do a quick downward motion while releasing the game piece. What’s the benefit of that?
It looks like you added a plastic shield to the claw to limit how far in the game piece can go. Was that to protect the cube from a pinch point?
I’m curious about the decision to do an asymmetric claw. Obviously mechanically simple but seems to be a little less intuitive to control.
I suspect moving the arm pivot forward will create geometry problems achieving the stowed and scoring positions - maybe moving the motor mechanism below the arm could save a headache.
This robot also probably needs some good covers to keep game pieces from landing under the arm.
