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Code for HCMS-2972 display: For Arduino

VERSION DU 12 JANVIER 2009:

IC

Capacitors

LEDs

RESISTORS

OTHER

fin de la liste.

Adaptateur SMD/DIP ( ISP - Rx/Tx )

Info sur la problematique du low drop voltage

2.7 LDO TPS 79927

3.3 Regulator LT 1521

  • Sens pin = Optimum regulation will be obtained at the point where the sense pin is connected to the output pin of the regulator.
  • Output = They are stable with only 1.5mF on the output
  • SHND =

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=LT1521CS8-3.3-ND

GPS

12 Channel Copernicus GPS Receiver

  • Low power : 28.5mA @ 3.3V
  • Tiny size : 19x19x2.54mm
  • Time to First Lock (cold start) : 39sec
  • Dual serial ports with reconfigurable UART rates
  • NMEA standard protocol
  • Spark Fun SKU#: GPS-07951 59.95$
  • DataSheet

Accelerometer

Lis3l02al (3-axis - +/-2g ultracompact linear )

  • ST pin = Self Test (Logic 0: normal mode; Logic 1: Self-test)
  • 2.4V to 3.6V single supply operation
  • 5x5x1.5 mm square
  • High shock survivability
  • Digikey Part Number 497-4917-ND 11.87$
  • DataSheet

Microprocessor

Atmega168 (MLF)

Clock

Led display

LED DISPLAY 5X7 8CHAR 3.8MM HER

http://www.avagotech.com/assets/downloadDocument.do?id=310

Battery Charger

SOT 23 Dual-Input USB/AC Adapter 1-Cell Li+

  • accept operating input voltages up to 7V.
  • 2.8x1.5x0.85 mm
  • POK output to indicate when input power is present.
  • The MAX 1555 instead features a CHG output to indicate charging status.
  • Spark fun sku#: Maxxi1555 3.86$
  • DataSheet

Address is a handmade electronic jewelry piece. When you first acquire the pendant, you select a place that you consider to be your anchor – where you were born, your home, or perhaps the place you long to be. Once the jewelry is initialized, every time you wear the piece it displays how many kilometers you are from that location, using a GPS component built into the pendant. As you take Address around the world with you, it serves as a personal connection to that place, making the world a little smaller or maybe a little bigger.

Working Documents for Address project.

by Mouna Andraos & Sonali Sridhar, work in progress

Address is a handmade electronic jewelry piece. When you first acquire the pendant, you select a place that you consider to be your anchor – where you were born, your home, or perhaps the place you long to be. Once the jewelry is initialized, every time you wear the piece it displays how many kilometers you are from that location, using a GPS component built into the pendant. As you take Address around the world with you, it serves as a personal connection to that place, making the world a little smaller or maybe a little bigger.

Details for the exhibition version of Address

1. Technical description & document

Links to datasheets of main components:

Arduino mini --currently being replaced by Atmel + basic components only
HCMS 2912 alphanumeric display
GPS module used.
MAX 1555 battery charger breakout board
MAX 1555 chip datasheet
MAX 756 step-up voltage
3.7 V single cell Lithium Ion battery

Note: We are working on droping the Arduino mini all together and redesign a circuit specific to Address. We are hestitant to do this for this next version due July 15th.

2. Code

Code currently writen in Arduino 007. Code still in progress, use at your own risk. June 19th, 2007 version. GPS code still needs some modifications.

We also create a small processing application for the demonstration of the necklace when GPS is not available.
August 2nd, 2007 version for Processing 118 to 124.

3. Part List

  • Battery 3.7V single cell Lithium 1000mAh

  • Battery Charger
    • MAX 1555 chip
    • USB connector
    • 3 x 1mF capacitors
    • 1 x led
    • 1 x 330Ohm resistor

  • Step up DC-DC Switching Regulator
    • MAX 756 chip
    • 2 x 100uF capacitor
    • 2 x 0.1uF capacitor
    • 1 x 1N5817 schottky diode
    • 2 x 15k resistor (brown, green, orange, gold)
    • 1 x 22uH power inductor, 1A

  • Display
    • HCMS 2912

  • GPS
    • EM-406A

  • Arduino Mini
    • ATMEGA 168
    • 3 x 100n (C1, C2, C3) capacitor
    • 1 x 10n (C5) capacitor
    • 2 x 22p (C6, C7) capacitors
    • 1 x 10uF (C8) capacitor
    • 1 x 1K ohm resistor
    • 1 x 10K ohm ressitor
    • 16mhz OSC
    • LP2985-5.0/SOT23 voltage regulator

First prototype, October 2006:

Credits and thank yous

Address is created by Mouna Andraos & Sonali Sridhar with the support of the Eyebeam Open Lab?.

With precious voluntary help and contributions from
Melissa Cohen for jewelry and silver work
Christopher Cummings for Cad and 3D designs
Andy Doro for Processing code

As well as involuntary help and contributions from\\ Daniel Shiffman for his Google API code
Heather Dewey-Hagborg for her Arduino GPS code
Limor Fried for the Minty Boost circuit design

And Many thanks also go to
Tom Igoe
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Page last modified on January 14, 2009, at 07:06 PM