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R 3. Ethan Hall Michael Kelton Greg Wegman Vashisht Lakhmani. Description. Mars Science Lab Rover Replica Circuit Design Points of Interest Driving the motors Steering the motors Charging the batteries Sensors Wireless communication. Block Diagram. Theory of Operation.

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Presentation Transcript
slide1

R3

Ethan Hall

Michael Kelton

Greg Wegman

Vashisht Lakhmani

description
Description
  • Mars Science Lab Rover Replica
  • Circuit Design Points of Interest
    • Driving the motors
    • Steering the motors
    • Charging the batteries
    • Sensors
    • Wireless communication
theory of operation
Theory of Operation
  • Microcontroller
  • Power Supply
  • Motor Control Circuit
  • Sensor Circuit
  • Wireless Communication Breakout
microcontroller
Microcontroller
  • LPC1768
    • 32 bit ARM Cortex M3
    • 512 kB Flash; 32kB SRAM
    • I2C; UART; USB; PWM
    • Run at 3.3V
power supply
Power Supply
  • 2 Batteries in Series
    • Motors run at 5V
    • 3.7V LiPoly batteries in series = 7.4V
    • 2 charging pads in series – 10V for charging
  • Charging Chip (MCP73213)
  • Fuel Gauge (DS2782)
  • Utilize 5V and 3.3V Linear Regulator (AP1117-Y50G & AP1117-Y33G)
motor control circuit
Motor Control Circuit
  • 5 volt operation
  • 4 H-Bridges (BD6211F-E2)
  • 4 MOSFETs
    • Turns signal for motor on or off
    • One for each motor
sensor circuit
Sensor Circuit
  • 3.3V Operation
  • 4 Sonar Sensors (MB1240)
    • ATD
  • Accelerometer (LIS331)
    • I2C
  • Compass (HMC5883LSMD)
    • I2C
wireless breakout
Wireless Breakout
  • WiFly GSX Breakout (WRL-10050)
    • 3.3V Operation
    • UART