Recent Posts

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81
Robot Hardware / Re: Ribbon cable that services the limit switches on the arm
« Last post by Louis L on February 14, 2018, 02:33:46 PM »
Do not use this cable as-is.

We need something new.
82
Robot Hardware / Ribbon cable that services the limit switches on the arm
« Last post by Louis L on February 13, 2018, 10:11:36 PM »
There's a single ribbon cable that runs from the gripper end all the way to the logic board. It has 13 wires. One edge is painted black - that's the index for wire 1.

There are 9 limit switches along the length of the run. These are divided into 3 groups. Each group shares a common ground signal.

Here's the wire definition for the 13 signals on the ribbon cable, grouped.

1 Ground
2 Cube touch DIO-0
3 Wrist down reverse
4 Wrist up forward
5 Gripper closed reverse
6 Gripper open forward
7 Climber DIO-4

8 Ground
9 extension limit far reverse
10 extension limit near forward

11 Ground
12 arm rotation limit up reverse
13 arm rotation limit down forward

83
Robot Software / Re: Robot Hardware Testing Tasks
« Last post by Vanshika C on February 12, 2018, 07:43:41 PM »

- First thing once we get the hardware is to try the wiring using the livewindow. Once we know the sensors and actuators are connected to the right places we can move on to try the actual software.

- Add all basic commands to SmartDashboard. The idea is that when we get the hardware we can make sure the commands are accessing the right sensors and motors. Try each command in isolation before joystick and controllers
84
Robot Software / Re: Robot Hardware Testing Tasks
« Last post by Ishita G on February 12, 2018, 07:42:29 PM »

Climber
  • Check if cube is flushed, intake is raised, arm is raised, and claw is moved before robot begins to climb
  • Check if climber is extended if rung is detected and setup is complete
  • Check if robot returns message "Rung not detected" if rung is not detected, but setup is complete
  • Check if arm is extended and robot climbs after all requirements are fulfilled
  • Check if climber sonar distance is shown on the Smart Dashboard
85
Robot Software / Re: Robot Hardware Testing Tasks
« Last post by Ishita G on February 12, 2018, 07:12:49 PM »
Intake
  • Check to make sure intake can be flushed by pressing button 8 on the right joystick
  • Check to see if the left trigger on the Xbox controller allows the intake motors to run at different speeds
  • Check if intake lowers after timeout
  • Check to see if intake raises
  • Check to make sure arm is moved, intake is lowered, and cube is grabbed when right trigger (on Xbox controller) is pressed
86
Robot Hardware / Re: Spare Parts
« Last post by Louis L on February 12, 2018, 10:51:11 AM »
Ordered from Igus
6 x NW-02-40 DryLin carriages (received 2/13)
87
Robot Hardware / Re: Spare Parts
« Last post by Louis L on February 11, 2018, 08:37:25 PM »
Ordered from DigiKey (received 2/14/18)
2 x 987-1133-ND 7286R1KL.25 10 turn 1K 5% potentiometer
25 x 480-2380-ND snap action limit switches
88
Robot Hardware / Re: Spare Parts
« Last post by Louis L on February 11, 2018, 08:31:55 PM »
Ordered from AndyMark (received 2/14/18)
6 x AM-0134a key hub
1 x AM-3764 64:1 gearbox
2 x AM-3785 CIM pinion
1 x AM-0226 S35-60L sprocket
89
Robot Hardware / Re: Spare Parts
« Last post by Louis L on February 11, 2018, 08:29:25 PM »
Ordered 3ft 3/8 keyed shaft from McMasterCarr (received 2/13)
https://www.mcmaster.com/#1497K22
90
Robot Hardware / Re: Spare Parts
« Last post by Louis L on February 11, 2018, 08:06:46 PM »
Arm
Claw
  • Coasters
  • Snowblower Motor
    • We Already have a lot of these, but we donít know of they work
Wrist
  • ⅜ Keyed Shaft
    • 3/32 Key Way(Standard)
    • Hi-Carbon Steel
    • 3 Feet
      • Will Cut Down To Size
  • Seat Motor
    • Have 1 Spare Already
    • Currently being used in 2 places on the robot
      • Number of places being used might increase
        • Claw might need more torque
        • Very versatile, so it won't be surprising of they are used somewhere else
    • Need to get 2 more
      • Just in case

We have enough snowblower and bosch seat motors. No need to get any more.
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