Resistor - Warlocks 1507

Robotics 101 Electronics and Controls Basics of an FRC Robots control system. The Control System The Control System is the Brain of the robot The control system receives input from the driver station and tells the robot what to do (e.g. drive forward, back up, shoot ball, etc.) It is very important to have a well-organized and wired control system A wiring issue can cost a match, or even a medal (Finals at the

Buckeye Regional 2013) Finding issues with the control system would ideally be easy and quick Easy access to the control system should always be considered in the design process Pre-2015 Controls and Wiring Major Components: NI cRio Sidecar Power Distribution Panel D-Link (wireless router) Speed Controllers

2015 and Future Controls and Wiring Major Components: NI roboRio Power Distribution Panel D-Link (wireless router) Speed Controllers Drive Station Joysticks, USB multiplexer, Laptop/Classmate Battery and Power Rated: 12V, 18 Amps-Hours Battery can provide 18 amps for one hour

From our driving experience how long can a good charged battery drive our robot? Robot requires a minimum amount of power to turn due to friction of wheels on carpet Power = Volts X Amps so Amps = Power/Volts Charged good battery = 12.5 Volts Voltage drops as battery charge is consumed As voltage drops what happens to: Power? Amps?

Speed Controller Functions Backwards/Forwards Faster/Slower Pulse Width Modulation (PWM) Jaguar Controller (Old) Talon SR Controller (Newer) Motor Victor Controller Talon SRX Controller

(Newest) Electrical Devices Camera Aiming, scoring Goal Tracking Limit Switch Control fixed position Potentiometer Variable control Electrical Devices

Photoelectric Limit Switch Non contact sensing/limit switch Sensing plunger back, Frisbee present Encoders Measure rotational speed Computer counts and adds pulses Gyro Measure robot direction/angle Used to drive straight or turn in auto Motor List from 2012 Robot Description/Function Qty

Main robot drive Mech to lower bridge 1 Extended front roller 1st stage roller front 1st stage roller rear Upper roller/shooter feed Ball shooter wheel Shooter turret rotate 1 Ball singulator 1 Wheel brake 1 Motor

Sensor rqmt. /desire 4 CIM Would like encoders AndyMark Potentiometer & Limit Switch 1 Banebots None 1 AndyMark None 1 Window None 1 Banebots None

2 FP RPM Window Potentiometer Window Limit Switch Window None

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