LiftTags: design and think
Task: Design a lift for MiniChassis
So we need to lift the robot. There are multiple ways to accomplish this including a linear slide or an arm; we decided to begin experimenting with the linear slide method. I created a linear slide using Tetrix bars and the standard linear slide kit. Instead of putting nuts with bolts on the end as stops I took an aluminum plate with holes on it and had Max, one of our mentors, assist me by cutting the plate into small squares to screw into the end of the bar. We planned to test out the tetrix bar at the scrimmage we attended, but two things went wrong. First, I forgot to make the linear slide stronger by attaching side plates, and we only brought 3 of the four needed REV hubs to be able to use both our MiniChassis and our big wheel chassis. Since BigWheel required more testing, we decided to give up one of our two REV hubs so that BigWheel would be able to get some much-needed testing. Since we were not running mini chassis I attempted to strengthen to linear slide by adding side plates but was unsucessful due to a lack of parts availiable. We relized that if we were to include a linear slide on our robot it would require too much maintaince and would soon become too finicky.
In the end we decided to scrap the standard linear slide in place of a geared linear slide with a different bar. By usingthe geared slide we would eliminate the need to deal with complicated string and would need to simply reverse the difrection of the motor to move it up and down. Working with the previous linear slide though showed us that it was not the best implementation to use with our robot design and allowed us to try better more efficient variations.