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Electrical 2017

Attendance

Note Info

Students
Mentors
Date & Time
Location & Author
  • David S.

  • Adam P.

  • 2/18/2017

  • 3 hours

  • Shapland Shop

  • Alexandre G.


Notes

Cy@ in a week Issac and I will most likely be available through messenger.

Sorry for lack of comments in the code... I was rushed

Work Completed

  • Nearly completed all wiring on the practice bot
  • Finished coding the new robot
    • No testing done
    • Code for all motors and solenoids
    • For the solenoids, we have to tell the code which PCM we are using

Challenges

  • I do not believe that the roborio is configured on the practice bot
    • Did not have time to fix that
  • Apparently each robot needs 2 PCM
    • In total, we only have 4 working PCM. There are currently two on the practice bot, 1 on the comp bot, and one on the nonadrive.
    • "Additional PCMs can be wired to a standard Wago connector on the side of the PDP and protected with a 20A or smaller circuit breaker. Additional PCMs should also be placed anywhere in the middle of the CAN chain." http://wpilib.screenstepslive.com/s/4485/m/24166/l/290495-wiring-pneumatics
      • What is "Wago connector? " (Red and Black things)
        • The next step will involve using the Wago connectors on the PDP. To use the Wago connectors, insert a small flat blade screwdriver into the rectangular hole at a shallow angle then angle the screwdriver upwards as you continue to press in to actuate the lever, opening the terminal. Two sizes of Wago connector are found on the PDP:

    • The other PCM will most likely go near the Raspberry Pi and Radio

Work for Next Meeting

  • Configure RoboRIO
  • Make sure the code works
    • In simulator, everything works except for the gear pneumatics which I could not test
      • The simulator cannot handle 2 Pneumatic Control Modules (Maybe)????
    • Make sure all pneumatic constants are correct
  • WIRE WIRE WIRE
    • Competition bot needs a lot of wiring
    • Practice bot needs solenoid and TalonSRX and PI and Radio
  • Fix RPi login
  • Try and connect to the frisbee bot
  • Continue work on moving to the peg
    • See how well it works if we have to drive then turn 30 degrees in the case that we do not get the middle starting position.
  • Work on auto mode that follows path, similar to one we'd need to get to a peg, test and see how consistently it can be navigated
  • Auto strafing based on position values from camera and network tables
  • Get streaming working well on raspi
    • Probably use custom python http server in vision_helper script
    • example http://answers.opencv.org/question/61070/streaming-http-server-from-inside-opencv2-python-script/
  • Get exposure control on driverstations (Needs Work)
    • works on linux, not windows

List from Mike (preventative measures):

  • Batteries
    • Battery Beak, logging and tracking internal resistance
      • Make a google spreadsheet to track battery data
      • Use computer to collect data/make a graph about voltage over time
    • Put meaningful labels on the batteries
    • Build load testing board
      • Resistors!
  • Power Distribution Panel
    • ​Can read voltage/current on every port
      • Could be used for diagnostics
  • Make a checklist
    • Learn how to read LED indicators on all components
    • Guidlines for checking wire integrity
    • Unit tests in robot code
      • Check to see if sensors are working?
      • Motors running correctly
      • Battery has enough voltage
      • Check the pneumatic pressure as well as solenoids
    • Useful for prematch/prebagging​
    • Voltimeter between the various locations
  • Sensors
    • Range finders - analog IO -> RIO (code)
    • Touch sensor - digital IO -> RIO (code)
  • Checkout Code // Comptetion Code
    • ​

On Schedule?

getting there