2017:Lifter: Difference between revisions
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1/18/2017 | 1/18/2017 | ||
- Velcro is allowed on ropes, assuming the rope follows all other rope criteria. See FRC Q & A #6 and #215: https://frc-qa.firstinspires.org/qa/6 https://frc-qa.firstinspires.org/qa/215 | - Velcro is allowed on ropes, assuming the rope follows all other rope criteria. See FRC Q & A #6 and #215: [https://frc-qa.firstinspires.org/qa/6 https://frc-qa.firstinspires.org/qa/6] [https://frc-qa.firstinspires.org/qa/215 https://frc-qa.firstinspires.org/qa/215] | ||
- Originally we planned to make a "finger" based climber but we realized that the "fingers" sometimes pushed the rope away instead of catching it. This made the climber require a longer amount of time to align. | - Originally we planned to make a "finger" based climber but we realized that the "fingers" sometimes pushed the rope away instead of catching it. This made the climber require a longer amount of time to align. | ||
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- To circumvent this issue, we designed another prototype. This second model used velcro to catch a velcro rope. It is much smaller and easier to assemble, therefore taking up less space and time. Inspiration was derived from Ri3D 1.0 | - To circumvent this issue, we designed another prototype. This second model used velcro to catch a velcro rope. It is much smaller and easier to assemble, therefore taking up less space and time. Inspiration was derived from Ri3D 1.0 | ||
https://www.youtube.com/watch?v=h6_UBzGQM-A | [https://www.youtube.com/watch?v=h6_UBzGQM-A https://www.youtube.com/watch?v=h6_UBzGQM-A] | ||
- We would also like to implement a "flip" mechanism which would transfer the climber from inside the hopper (most likely) to the outside of the robot, above the bumpers. | - We would also like to implement a "flip" mechanism which would transfer the climber from inside the hopper (most likely) to the outside of the robot, above the bumpers. | ||
1/28/2017 | |||
- Moving forward with velcro climber | |||
- Decided on the use of 2x 775Pro Motors with a Dual Input 35:1 (5:1 and 7:1) Gearbox | |||
- In progress: detection of top of rope, brake/lock to prevent descension | |||
- Considering the use of a wratchet and pawl lock (similar to 2016) | |||
- Rope will be made of a tie down strap with velcro sewn on | |||
- Will explore the possibilty of using a rope that does not touch the ground and one that does | |||
Revision as of 19:17, 28 January 2017
1/18/2017
- Velcro is allowed on ropes, assuming the rope follows all other rope criteria. See FRC Q & A #6 and #215: https://frc-qa.firstinspires.org/qa/6 https://frc-qa.firstinspires.org/qa/215
- Originally we planned to make a "finger" based climber but we realized that the "fingers" sometimes pushed the rope away instead of catching it. This made the climber require a longer amount of time to align.
- To circumvent this issue, we designed another prototype. This second model used velcro to catch a velcro rope. It is much smaller and easier to assemble, therefore taking up less space and time. Inspiration was derived from Ri3D 1.0
https://www.youtube.com/watch?v=h6_UBzGQM-A
- We would also like to implement a "flip" mechanism which would transfer the climber from inside the hopper (most likely) to the outside of the robot, above the bumpers.
1/28/2017
- Moving forward with velcro climber
- Decided on the use of 2x 775Pro Motors with a Dual Input 35:1 (5:1 and 7:1) Gearbox
- In progress: detection of top of rope, brake/lock to prevent descension
- Considering the use of a wratchet and pawl lock (similar to 2016)
- Rope will be made of a tie down strap with velcro sewn on
- Will explore the possibilty of using a rope that does not touch the ground and one that does
