Hoarder Board

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The main purpose of the Hoarder board aka Swiss Army Knife (SAK) [1] is the collection and preprocessing of sensor data. It was designed as part of the Every Sign of Life project out of MIT Media Laboratory.

Contents

Hardware Specifications

Sensing: Sensing via daughter board connector to include EKG, EMG, EEG, skin conductance, and temperature
I/O:
  • CompactFlash connector
  • Serial port
    • PC-compatible (5V inverted) serial port up to 115200 bps
  • Programmer port
    • initial microcontroller programming using standard programmer with passive adapter
    • reprogramming when the serial programming function is not accessible
  • MITHRIL port
    • I2C and power sharing for MITHRIL wearable network
  • Daughter board connector
  • optional 2-color LED
Radios:

Radiometrix 2-way half duplex FM Radio module (BiM2)

  • 64kbps
CPU:

PIC16F877 20-MHz microcontroller

  • 14KB Flash
  • 368 RAM
  • 256 EEPROM
  • 5 MIPS
Storage: Compact flash up to 1GB

Applications

Personal health-monitoring

Power

Power supply

  • 4 AAA rechargeable or alkaline batteries without power regulator
  • optional 5V power regulator for other battery or power adapter configurations
  • sharing power on MITHRIL network

Software

  • Programmed using PICSTART Plus
  • PIC Code -- written in CCS C; contains working code used in several projects
  • PC Code -- applications to exchange data and reprogram board

(code may be downloaded via Hoarder Board homepage)

Additional Information

Papers

  • Gerasimov, V. and Selker, T. and Bender, W., Sensing and effecting environment with extremity computing devices, Motorola Offspring, vol 1, No.1, 2002

References

  1. http://web.media.mit.edu/%7Esylvan/classes/affect/hoarder.jpg

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