Steve
T H E F U T U R E O F R O C K C L I M B I N G
10/8/2009

Team Members
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Anil Damle
Matanya Horowitz
Kirk Liu
Mark Vankempen
Steve Wilson
Steve 10/8/2009

Presentation Outline
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Review
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Solution
Overall Status
Handhold
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Construction
Architecture
Status
Controller
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Architecture
Status
Project Logistics
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Progress & Budget
Goals
Steve 10/8/2009

Project Review
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SmartWall

Use modern technology on the antiquated rockwall
Hardware
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Output

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Light-up handholds
Dynamic route creation
Input

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Pressure sensors
User-programmable routes
User specific memory

Memory

User profiles
Steve 10/8/2009

Steve
User Input
System Overview
Handhold Handhold
Controller
Host Computer
Touchscreen
SD Card
10/8/2009

Project Status
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Handhold prototype complete and ordered
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PCB Layout
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Physical Design
Sensor Placement
Completed Wall

With non- smart handholds installed
Wireless protocol complete
Controller PCB layout complete and ordered
Have clear handholds in shipment
Steve 10/8/2009

Steve
SD Card
Storage
System Diagram
Controller
XBee
Computer
Host
Computer
MSP 430 F5438
LCD Display
XBee
Numeric
Keypad
XBee
Handhold
MSP 430 F2418
Force
Sensors
Lighting
Output
10/8/2009

Handhold
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Controller will communicate bi-directionally with host controller
LED’s used to light up handholds as output
Pressure sensors used to detect input
PCB must be small enough to fit inside a handhold
Semi-transparent handholds have been bought from
Franklin Handholds
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Boulder Based
Custom design for PCB and Batteries
Mark 10/8/2009

Mark
Handhold Architecture
LED’s
GPIO
MSP430F2418
UART
Xbee Wireless
ADC
Force Sensor
10/8/2009

Handhold – PCB
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The handhold PCBs are complete and ordered (version 1.0)
Space for up to 8 force sensors
Transmits force data
Receives LED lighting instructions
Charges batteries
Room for ½” bolt
Mark 10/8/2009

Handhold – MSP 430
 MSP430F2418
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16-Bit Ultra-Low-Power
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116KB Flash
8KB RAM
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12 Bit ADC
2 USCIs
Mark 10/8/2009

Handhold Force Sensors
 Each force sensor will be connected to a single supply non-inverting Op-Amp circuit
 There will be a total of 8 Op-Amps on the board (2 ICs of 4 Op-Amps each)
 Force sensor ranges from 1.5V (low force) to 3V (high force)
 FlexiForce sensor will be used

Purchased from SparkFun
Mark 10/8/2009

Handhold – Lighting Output
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LEDs will be controlled by GPIO on MSP430
LEDs will be driven by power supplies with the processor controlling the gate of the MOSFET
Four different colored LEDs, either on or off
Future revisions will allow for color and intensity variability in LEDs
Mark 10/8/2009

MAX1555 - Battery Chargers
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Charge from USB or AC Adapter
Automatic Switchover when AC Adapter is Plugged
In
On-Chip Thermal Limiting Simplifies Board Design
Charge Status Indicator
5-Pin Thin SOT23 Package
Recharge on wall

Recessed electrodes
Kirk 10/8/2009

Handhold Power PCB
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Three Voltage Regulators (1.5V, 3.3V, 5V)
Batteries not user-removable
Kirk 10/8/2009

Battery Solution
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One 6Ahr triple pack for each handhold.
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Each cells outputs a nominal 3.7V at 2000mAh
 sleep mode ~ <1uA,
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Active ~ 200uA
Model:E585460
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Dimensions: 0.75x2.1x2.1"
Weight: 3.88oz
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Wall power of handholds for debugging
Keep components in low power as much as possible
Aim for >1 month between charges
Kirk 10/8/2009

Handhold Status
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Completed so far:
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Custom handholds solution
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PCB layout complete and ordered (Revision 1.0)
Parts ordered
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Coding underway
To do:
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Add recessed electrodes
Build clip-on charger
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Programming
Assemble
Kirk 10/8/2009

Handhold  Controller Protocol
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Handholds communicate with Controller using packets
XBee handles timing, traffic congestion
Controller set to Coordinator

Handholds are End Devices
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Handholds automatically sleep when not in use

Cyclic Mode – Wake up at 1Hz, check for information

Broadcast data at 2Hz
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Power draw < 50µA during sleep
Kirk 10/8/2009

Handhold   Controller Protocol (Climbing)
Handhold 
Controller
Field ID
Format U32
Status
U8
Controller 
Handhold
Field Destination
ID
Mode Set
Format U32 U8
Force
(4 x 8 bit)
U32
Timestamp
U32
Mode
Dependent
Data
U32
Timestamp
U32
Kirk 10/8/2009

Mode
Shutdown
Not in use
On route
1
2
Mode ID
0
Handhold Modes
Mode
Description
Shutdown for long period of time
Low power mode for Handhold not on route
Handhold is on route
Mode Details
Set Cyclic Sleep to period of one minute
Broadcast if pressure detected
Implement lighting scheme, broadcast pressure data
Kirk 10/8/2009

Controller
 Controller broadcasts status information
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No handhold-handhold communication
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Handles dissemination and storage of information
Provides initialization instructions, lighting modes
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Detects unique users
Matanya 10/8/2009

Controller Architecture
LCD
Matanya
RFID
UART
UART
SD Card
SPI
MSP430F5438
GPIO
UART
Xbee Wireless
Keypad
10/8/2009

Controller – MSP 430
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MSP430F5438
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Ultra low power
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Flexible I/O Structure

SPI, UART
16KB RAM
JTAG programmable
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On chip debugging
Matanya 10/8/2009

Host Controller – Data Storage
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SD Card storage
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SPI Interface
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Custom file system

Have development code
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Computer readable
Removable
Contains user profiles
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Allows for profile modifications
Matanya 10/8/2009

Host Controller – RFID Recognition
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Provides intuitive method to load user profiles
RFID Reader ID-12 implements hardware
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Serial string output of unique 32-bit card ID
Matanya/Anil 10/8/2009

Controller debugging components
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Two line LCD display
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Serial command input
Numeric keypad
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Matrix input
Allows for debugging input-output
Matanya/Anil 10/8/2009

Controller – Wireless Communication
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Communicates to Handholds via Xbee
XBee 1mW Chip Antenna
Serial interface
Hardware – Xbee 1mW Chip Antenna

Low power mesh networking
Data transmission
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Pressure
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Lighting mode
Status
Matanya/Anil 10/8/2009

Controller Status
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Complete:
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PCB layout complete (Revision 1.0)
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All parts ordered

Hardware done
Wireless Protocol complete
To Do:
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Software

SD Card interface
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Handhold interface

Initialization sequence
Assembly
Matanya 10/8/2009

Computer
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PC computer with Windows XP

Pentium 4 1.8Ghz
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512 MB RAM
Matlab Necessary
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Generated user interface
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Provides communication with profile
Implements video processing, evaluates route planning algorithm
Will provide higher level functionality
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Video processing, Route creation
Connection to web camera
Anil 10/8/2009

Computer - Touchscreen
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Possibility
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Tiling of handhold has freed budget
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Still contingent on EEF Funding
LCD8LVGATS
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$300
VGA Input
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USB Output
More research once we get funding
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Mouse and keyboard backup
Anil 10/8/2009

Interactive wall image
Computer – User Interface
Profile
Parameter adjustement
Anil 10/8/2009

Anil
Item
Wall
Dumb Handholds
Host PC
Controller PCB
Handhold PCB
Components for PCB’s
Pressure Sensors
Batteries
USB module / RFID
Total
Budget – To date
Cost
200
Free (Thanks Jake!)
Free
50
50
150
80
40
20
~600
10/8/2009

Anil
Budget - Future
Item
Handhold Components (each)
MSP 430
LED’s
Pressure Sensors
Batteries
Resistors
Capacitors
PCB
Controller Components
Camera
Touchscreen
Total (10 Handholds)
Cost
4
3
80
40
10
20
170
Free
10
20
300
~2100
10/8/2009

Concerns
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Sensor saturation

More expensive sensors
Budget

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Insufficient # of handholds

Mix in dumb handholds
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Correlate with video data
No touchscreen
Ability to test algorithms
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Wall is too small
Request wall-time at rock gym
Anil 10/8/2009

Milestone #1
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Controller talking to multiple handholds
Preliminary Initialization Sequence

Handhold placement analysis
Light up handholds for routes
Preliminary algorithm results

Route creation
Anil 10/8/2009

Milestone #2
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Data logging to SD Card
Algorithms complete and tested
Preliminary user interface

Ability to view data
Basic functionality completed
RFID Login
Anil 10/8/2009

Anil
Logistics - Schedule
10/8/2009

Individual Tasks Remaining
Kirk
Anil
Touchscreen interface
User Interface Matanya
Route
Planning
Controller
Logging
Anil
RFID User
Recognition
Video
Processing
Controller
Debugging
Controller
Initialization
Controller
Wireless
Transmission
Handhold
Assembly/
Debugging
Computer
Logging
Handhold
Poll Force
Sensors
Handhold
Broadcast &
Receive
Mark
Handhold
Initialization
Handhold
LED lighting
Steve
10/8/2009

Questions
Anil 10/8/2009