Engineering Notebook – 10/27/2018

Attendance:

Zach, Charles, Drew, Cameron

 

Meeting Notes

  •  Zach
    • Finished putting together the claw mechanism for the team marker mechanism
    • Put cardboard into the bottom section of the claw to lever the gears into touching
    • Put zip ties through surgical tubing on the sweeper of the robot to strengthen them
    • Converted claw mechanism of the team marker mechanism to a hook mechanism to save space and make it easier to drop the actual marker
    1. All
      1. Tested the robot
  • Cameron & Drew
    • Took apart large pulley system to change the position of the spool
    • Changed the large pulley rotator gears to allow for more room for the string
  •  Charles
    • Finished constructing the one stage x-rail slide for the team marker mechanism
    • Put the x-rail slide on a pulley system so that the string could go through, put elastic on the back so that the system would able to be pulled back

Engineering Notebook – 10/18/2018

Attendance:

Alex, Cameron, Charles, Drew

 

Goals:  

All

  • Attach mineral collector bucket to arm, perfect hook used to hold on to
    cargo hold, and assemble frame.

Meeting Notes

  • Cameron and Charles
    • Finished building bucket. They got Alex to program a test program for their and tested it with A to take in minerals, b to stop, and x to push them out. After seeing that it worked, attached it to the arm and discussed ways to put it on robot.

Bucket

  • Alex and Drew
    • Built the frame, which was an o frame with 2 bars going across the robot parallel to each other and the length wise way.

Robot

  • All
    • When we got together to discuss how the arm will go on the robot, we realized that for the arm to fit within 18” lengthwise and 18” tall, we would have to change the 2 bars going through the middle to be raised up about 3” to allow the arm to rotate with the center of it being on the two c-channels, but not hit the ground, or go above 18”.

 

axleTestJig

  • Charles and Cameron
    • Built the 2 new bars going across that are raised 3”

Bars

  •  Alex and Drew
    • Tightened Bolts on robot.

 

Engineering Notebook – 10/13/2018

Attendance:

Alex, Cameron, Charles, Drew, Zach

 

Goals:  

  • Cameron and Charles
    • Decide on a servo to turn the grabbing mechanism to dump or pick up the minerals.
      • Options:
        • Continuous Large Servo
        • 180 Large Servo
        • Continuous Servo
        • 180 Servo
      • Criteria:
        • Weight
        • Size
        • Power
    • Attach the selected servo motor to the dump mechanism
    • Attach the dump mechanism with the servo to a Tetrix X-Rail
  • Zach and Drew
    • Build a frame that will work with mecanum wheels
    • Build a hook that will attach to the bracket on the side of the lander
  • Alex
    • Create a program to test the different servo types so Charles and Cameron can decide which one they want to use
    • After Charles and Cameron have decided on a servo write a
      program for the selected computer

Meeting Notes

  • Cameron and Charles
    • Choose the 180 Servo because it is lighter than the Large Servos, is one of the smallest servos and could perform the task easily.
    • Attached the Servo the dump mechanism and modified dump mechanism to make it lighter.
    • Attached the dump mechanism to a Tetrix X-Rail and prepared it to be attached

20181013_152355

  • Zach and Drew
    • Built a frame that would allow the attachment of mecanum wheels.

20181013_152332

  • Built and attached a hook to the robot that allowed it to easily lift itself off the field.

20181013_152317

  • Alex
    • Programmed all 4 servos to move a certain distance forward and back.
    • Programmed the selected 180 Servo to move to coded positions.
    • Helped Zach and Drew put together a frame that would work for mecanum wheels.

 

 

 

Engineering Notebook – 10/11/2018

Attendance:

Charles, Cameron, Drew, Zach

 

Goals:  

All

  • Design a hook to latch ourselves onto the lander.
  • Continue working on the mineral scooper.

Meeting Notes

  • Created an idea for the hook, an eye screw bent at 90 degrees in 2 different spots, at perfect length to fit the hook and designed the exact measurements.
  • The first bend was successful, but the second bend on both screws, even with a slower and more cautious approach the second time, broke the screw.
  • Planned to fix this by getting a thicker and stronger screw.
  • Cut the pipe so that it would fir in the box to hold the minerals.
  • Attached the pipe with surgical tubing to the appropriate place on the robot.
  • Experimented with many different positions to attach the servo and ended up extending the robot upwards with a 1×3.
  • Attempted to test, but were ultimately stopped by phone/program issues.

20181013_152959[1]

 

Engineering Notebook – 10/04/2018

Attendance:

Alex, Charles, Cameron, Drew, Zach

 

Goals:  

All

  • We wanted to make sure that our hook could sustain enough weight.
  • We wanted to build a device to make sure that the programs did what we needed it to do.
  • We wanted to build a mechanism that spins a claw to pick up balls and cubes and place them in the designated area.

Meeting Notes

The team split up into three groups

  • Charles and Cameron:
    • Made a spinning lube and ball grabber. The grabber is designed to pick up items and put them into a place that holds them, and then lifts and dumps them into the right spot.
  • Alex:
    • Built a machine to test the rotation of the servos in his program. The tests and the machine proved to be very efficient. Two servos were rotating. One went kind of slow and at a normal pace, and the other one went faster.
  • Drew and Zach:
    • Tested the hook to see how many c-channels it could hold. It ended up holding up about 14.  They needed to see if the robot could be held up. They also needed to see the limit for the hook.

Closing Thoughts

  • We all worked hard and will hopefully be finished with our projects by the next two weeks.