1. SHU: The Running Companion
Katie Klacik
Brian Baumgartner
Dan Strauss
Kyle Anderson

2. Quick Project Overview
Uses GPS to record distance run
Stores Data on SD card after run completed
Displays information to user in an easy-to-understand format

3. General Block Diagram MCU LCD Screen Input Buttons Optical Encoder15 1
GPS Receiver
PA/PM/PB 1
SD Card R/W
SCI 1 1
SCI 2 1
MCU
Speaker 5
Power
Supply
Circuit 1
PWM 0
PB/PT 1
PAD
PAD 3 2
Input Buttons
Optical Encoder

4. Power Supply Block Diagram
5.0 V (150 mA current requirement)
Battery Charging IC (Select)
Battery (3-4.2 V)
Wallwart (5 V)
4.35 V
5.0 V
Boost
3.8 V (25 mA current requirement)
LDO
3.0 V (25 mA current requirement)
LDO

5. PCB Layout Considerations
GPS positioned as far as possible from the battery and power supply circuit to limit noise
Bypass capacitors close to parts
Short traces between Rx and Tx lines for SCI
Try to keep the LCD trace lengths close to the same
Try to keep the design small and compact while leaving enough room for traces and spacing
Include headers (especially necessary to check MCU-LCD connections)

6. Questions?