I had the awesome opportunity to work with Subzero Robotics (5690) this weekend on a T-Shirt Launching Robot. Subzero, located out of Esko, Minnesota (near Duluth) is an upcoming team in Minnesota, and incredibly fun to work with.
I CADed the robot on Creo Parametric and created a Bill of Materials which 5690 then ordered. The final robot includes multiple improvements and changes to the CAD model based on what materials were available.
Here is a short
video I threw together that shows the robot in action with a few pictures as well.
Robot Specs:
- 4 cim drive with 4 toughbox micro gearboxes
- WCD using a hex output shaft from the toughbox micro
- Toughbox Micro has a gear ratio of 8.45:1
- The
air tank was purchased from Walmart (believe it or not) and is designed for use on a semi truck
- The barrel has a fairly restricted range of motion from nearly vertical to about 30 degrees for safety reasons
- The system is rated for up to 125 PSI, and includes a vent plug valve set to release air at 110 PSI
- The
Solenoid Valve that is used is a quick release 3/4" NPT valve
- At max pressure, the robot can launch T-shirts around 100 feet and can fire 4 times before needing to refill the air
We built the robot in 2 days with 10 people, and it was a bunch of fun! IF you have any questions or suggestions I'd love to hear them.
The point of FRC (in my opinions) is to teach the kids that might have no skills, new skills. - dirtbikerxz [more] 
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