Last spring, I took the Applied Robotics class at OSU (ENGR 421), where teams of three each built a robot capable of autonomously playing Crossfire. Below is a blooper reel from one night where I try to calibrate the system with a malfunctioning linear rail. I had a blast.
My favorite part was the shooter, which could shoot the 3/8″ diameter steel BBs at 170 mph but was regulated (PI controller) down to 10 ft/s.
Turned 21 yesterday. I guess most people do something special for the occasion, but I’m refreshingly busy interning for SpaceX in California; all of next week, I’ll be at a cyclotron facility in Indiana to do radiation testing, and the week after that will be spent hopefully playing with a flight control computer and designing a test data visualization and hardware control system (à la DRL, but for a rocket this time), highlighted by another SpaceX launch during the weekend.
The inside surface of my rims slopes upwards all the way up to the rim wall, so I had a hard time pumping up the Maxxis Ardent on the first few tries. I modified and finalized my taping strategy while pumping up the Specialized tire for the first time, so I don’t know if the Specialized tire would’ve been easier or not. Regardless, I was able to leisurely pump up both tires, without sealant, with just a floor pump and a bit of soapy water on the tire beads.
Per instructions on the bottle, I added 100 mL of sealant to both tires through the valves (with core removed). Small leaks at the valve stems were fixed by tightening the nut with a pair of pliers.
Gorilla tape nearly tore the skin off my hands. That stuff is really sticky.