2012:Shooter and Collector
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Shooter Design
- Turret-mounted
- Approx. 280 degrees of rotation minimum need final range
- 1-degree precision
- Mechanical hardstops
- Absolute angular position sensor
- Need motor and power controller
- 2-Wheel shooter
- Must be able to impart backspin
- Fixed angle of shot -- approximately 60-70 degrees above floor
- Each wheel independently controlled (to control backspin)
- Powered by Fisher-Price motor on speed controllers
- Sensor for RPM on each
- Provide sufficient resolution for rapid speed control update
- Identify sensor characteristics
- Camera mounted on turret
- Must have direct light source inline with lens
- Do we need pan? tilt?
Beater Bar Design
- Fixed position within frame, as close to perimeter as possible
- 1 speed forward, 1 speed reverse (full speed? can use relay?)
- Pushes balls in and on to first conveyor section
- Identify motor
Wings/V-collector Design
- V-shaped collector outside of robot
- Articulated up/in and down/out -- 2-position motion
- Just a plain bars, no actual motion on the bars themselves
- Motion must be able to pull unloaded bridge down from horizontal
- Determine motor or pneumatics
- This also drives sensors (not needed for pneumatics)
- If motor, decide speed controller or not
Ball Movement/Storage System Design
- Two designs - not decided yet. DECIDE ME
- See drawings on shop wall
Resources
- Ball Trajectory Calculation spreadsheet
- Math behind the above spreadsheet
- Foil Sim III - Air flow simulator; useful for approximating drag effects on a ball
- Motor Specs from FIRST
Shooter and Collector Master Task List
Shooter and Collector's Engineering Notebook
Week 1
Week 2
Week 3
Week 4
Week 5
Week 6
Engineering Notebook Templates Available at:Engineering_Notebook_Template
Please Label All Notebook Pages 2012:Shooter and Collector XX.XX to avoid confusion.
