MobiSys Tutorial, San Francisco

TinyOS Hardware

Joe Polastre,

Phil Levis, Rob Szewczyk, David CullerUniversity of California, Berkeley

Intel Research Berkeley

MobiSys Tutorial, San Francisco

Motes

MobiSys Tutorial, San Francisco

3

UC Berkeley Family of Motes

MobiSys Tutorial, San Francisco

4

Mica2 and Mica2Dot

• ATmega128 CPU– Self-programming

• Chipcon CC1000– FSK

– Manchester encoding

– Tunable frequency

• Lower power consumption

1 inch

MobiSys Tutorial, San Francisco

Wireless Robots

MobiSys Tutorial, San Francisco

6

COTS-BOTS (UCB)Commercial Off-The-Shelf roBOTS• 5” x 2.5” x 3” size

• <$250 total

• 2-axis accelerometer

MobiSys Tutorial, San Francisco

7

Robomote (USC)• Less than 0.000047m3

• $150 each

• Platform to test algorithms for adaptive wireless networks with autonomous robots

MobiSys Tutorial, San Francisco

8

MICAbot (Notre Dame)

• Designed for large-scale research in distributed robotics and ad-hoc wireless networking.

• $300 each

MobiSys Tutorial, San Francisco

Sensorboards

MobiSys Tutorial, San Francisco

10

Basic Sensor Board

• Light (Photo)

• Temperature

• Prototyping space for new hardware designs

MobiSys Tutorial, San Francisco

11

Mica Interface Board

• 8 External Analog Inputs using Block Screw Terminals

– External Probes

• 8 channel digital I/O

• 1 relay driver

• On board 12-bit ADC– 0-2.5V, 0-3V, 0-5V

Ranges

• Stable 2.5V Reference

• 3V and 5V power

• Designed by UCLA CENS w/ Crossbow and UCB

MobiSys Tutorial, San Francisco

12

Mica Sensor Board

• Light (Photo)

• Temperature

• Acceleration– 2 axis

– Resolution: ±2mg

• Magnetometer– Resolution: 134G

• Microphone

• Tone Detector

• Sounder– 4.5kHz

MobiSys Tutorial, San Francisco

13

PNI Magnetometer/Compass

• Resolution: 400 Gauss

• Three axis, under $15 in large quantities

MobiSys Tutorial, San Francisco

14

Ultrasonic Transceiver

• Used for ranging

• Up to 2.5m range

• 6cm accuracy

• Dedicated microprocessor

• 25kHz element

MobiSys Tutorial, San Francisco

15

Mica Weather Board

• Total Solar Radiation• Photosynthetically Active

Radiation– Resolution: 0.3A/W

• Relative Humidity– Accuracy: ±2%

• Barometric Pressure– Accuracy: ±1.5mbar

• Temperature– Accuracy: ±0.01oC

• Acceleration– 2 axis– Resolution: ±2mg

• Designed by UCB w/ Crossbow and UCLA

Revision 1.5

Revision 1.0

MobiSys Tutorial, San Francisco

16

Motor/Servo Board

• H Bridge

• Standard Motor Interface

• On-board microprocessor

MobiSys Tutorial, San Francisco

17

Connexus Interface

For More Information, See:Eric Paulos. “Connexus: An Evocative Interface” Workshop on “Ad hoc Communications and Collaboration in Ubiquitous Computing Environments” New Orleans, LA. Nov 2002.

• Interfaces a mote with:– Vibration Motors

– Super-bright LEDs

– Force Sensing

– Accelerometer

– Nitinol/Flexinol contractor“muscle wire”

– Peltier Junction

• Tool for HCI research using wireless devices

MobiSys Tutorial, San Francisco

18

In Manufacturing

• “Dot” sensorboards (1” diameter)– HoneyDot: Magnetometer

» Resolution: 134 Gauss

– Ultrasonic Transceiver

– Weather Station

MobiSys Tutorial, San Francisco

Enclosures

MobiSys Tutorial, San Francisco

20

Mica Environmental Enclosure

MobiSys Tutorial, San Francisco

21

Environmental Monitoring

MobiSys Tutorial, San Francisco

22

Mica2Dot

• Standard Enclosure– HDPE

– Sealed

• Power Supplies– Coin Cell

» 250mAh

» 1Ah

– Li-SO2 (1Ah)

– NiMH (3Ah)

– AA batteries