Biosensor Array Developer

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This page is part of the Biosensor Array Project


Key Dates

  • Week of 3/21 : Official Challenge Briefing / Q+A
  • 3/25: Deadline to create your profile and submit your first blog update
  • 4/1: Deadline for Hackerspace Challenge Blog Post 2
  • 4/15: Deadline for Hackerspace Challenge Blog Post 3
  • 4/30: End of build time > 5/03: deadlines for your projects is now May 3rd, end of day Pacific time (GMT -8)
  • 05/01- 05/05: Judging period
  • 05/06: 3 semi-finalists will be announced
  • Week Of 5/16: One team member from each of the three semi-finalist hackerspaces will travel to San Francisco Bay Area
  • 5/21/22: Maker Faire
  • 5/22: Maker Faire Great Global Hackerspace Challenge Grand Finale
  • 5/23: Team members travel home

Product Line Overview

General Student Kit

for the kids this is the primary kit we are developing for the GGHC.

This kit includes wired sensors and a mother microcontroller enough to get students involved in data logging.

Wireless Student Kit

  • Same as General Student Kit but the sensors are wireless via xbee bluetooth shields (Wireless Device Node). Just in case wires aren't your thing. - Drew

Expandable Modules

for the Mad Scientists, Cyclists, Marathoners, and Runners.

These sensors and devices are too hardcore to be included in the basic package but we wanted to provide them should you need to take over the world. Most have another ardunio onboard.

Computer Interfaces

Biosensor Array Notes


  • Node Sensor Microcontroller Option: Arduino Pro Mini


Component Details Voltage DC milliamps Analog or Digital Hz Polling frequency Interface format Data pins Requires clock Generates interrupts
Development Microcontroller Platform Ardunio Mega
Node Sensor Microcontroller Option Ardunio Pro Mini
carbon dioxide sensor Parallax 27929 6.5 to 15 160 Analog > 2 single pin analog one analog input No No
Blank Row to modify table quick

Sensor References

Logging and Protocol

Charts, Tracking, and Interface

Google Health

Google Health will be used for sensor online data tracking and records.

We are planning on making a locally run application with the same functionality should the user not want to share their data the cloud.

Read more: Biosensor Array Data Visualization Design.


Computer Device Interface

A computer will be used to view real-time graphs and logs. It could also be used to enter/edit data manually.

  • Processing: good for computer (smartphone?)
  • Titanium Appcelerator: cross-platform mobile (bb/andriod/iphone) & desktop (mac/pc/linux)

Read more: Biosensor Array Computer Device Interface.

Mobile Device Interface

A smartphone makes a convenient device to view real-time graphs and logs on the go. It could also be used to enter/edit data manually.

  • QML: good for computer & Qt-capable smartphones (android & iphone?)
  • Titanium Appcelerator: cross-platform mobile (bb/andriod/iphone) & desktop (mac/pc/linux)

Read more: Biosensor Array Mobile Device Interface.



Biosensor Array Wiki

Please preface Biosensor Array articles and pages with "Biosensor Array " as to distinguish pages from the PS:1 wiki and ease migration.


PS:1 Group on element14

Official element14 Group

PS:1 GGHC Google Group


Single point of contact for the organizers: hackerspace AT element14 AT com


Ishmael upon receiving the money-wire will reimburse all team-members who purchase items for the project. BUY STUFF NOW and SAVE YOUR RECEIPTS.

Money Spent

- - - - - - - - - - - - - -

-$893.45 total spent

+$ 6.55 remaining budget

Parts on Hand

Unused parts. Expect compensation from budget if used in project.

Member Notes

Bill Mania

For my part, I've been re-building my development environment for Python and Qt on the Nokia N900 mobile device. I've also been reading through "Building wireless sensor networks" by Robert Faludi, to get an idea of the wireless options available to us.

Drew Fustini

Eric Hanley

  • Tons of Wiki Editing done. Please Preface internal Biosensor links with "Biosensor Array" to segregate our part of the wiki and make migration easier.
  • Google Health will be used for sensor data tracking.
  • We need to start buying parts ASAP(we're on week 2/5, if your ordering online expect at least 1 week for delivery)
  • Freeduino SB Kit acquired, building soon
  • if anyone has pictures/graphs/charts from the sensors send them my way

Avner Shanan

  • I tried and failed to edit the intro videos we took. For some reason, after transferring the files to my windows laptop, the files only had audio, and no video. I'll be contacting someone with more experience tonight.
  • Started building the EKG circuit. I have the first part built, but it's not behaving as expected. More testing and tweaking will be needed.

Weekly Meeting Notes

March 22, 2011

  • Drew suggested the posibility of using the Heart Spark as a heart beat sensor
  • Discussed approaching the accuracy through redundant sensors that could be averaged rather than high precision equipment (keeps costs down)
  • John Stoner suggested we make the project as available as possible, i.e. usable stand alone without a computer, with options for USB and bluetooth connections
  • We should decide on a target audience (both for who might use the device, and who might be building it)
  • Took some video (high level description of the project, bios for Avner, John, Shawn and Drew) for the introductory post which is due by Friday
  • [Drew] Just a FYI disclosure: I confirmed today with the element14 marketing manager running the contest that is ok for me to participate even though I am an employee of Premier Farnell (element14's parent corporation). I just can't be the team rep for Maker Faire if we make the finals [I'll be working Maker Faire for the element14 booth anyways].

March 24, 2011 (Conference Call)

  • Brief call between Avner & Drew at space and Bill
  • Discussed microcontroller platform, general opinion was to continue exploring Arduino
    • believe Eric & Phil already were on this track
  • Drew will mail organizers ( about parallax co2 sensor to see if element14 can source
    • Bill will be working on that sensor
  • Avner going to edit video over weekend for first post
    • new deadline for first post is Monday, Mar-28
    • Drew will write an intro transcript for Avner to record as initial take at Tuesday was too rough
  • Agreed best to meet on Tues after PS:One meeting
    • hold irc meetings as needed
    • possibly explore free conf call service (or skype?)
  • Avner going to see if he can get some signal from an ecg circuit over weekend
  • design decisions needed to determine if some sensors need their own microcontroller if sample rate too high to have one arduino process all inputs
    • good to have local output (lcd?) on the user's body for immediate feedback - instead of just feedback on wirelessy connected smartphone or PC
    • Drew is not working on any sensor at the moment, so please advise if help is needed on a sensor

March 29, 2011

  • In person meeting at space
  • TODO: add notes of the meeting

April 06, 2011

  • No Official team meeting, just independent talks after the PS:One public meeting.
  • New Member Kyle has Arduino experience and has now joined the team to work on Charts and Graphs with Processing.
  • New Member Kyle has lots of parts, like Drew, that are on hand for this project.
  • Another unknown member was talking about a social network AI hooked into a wearable sensor kit. We may be able to help him down the road after our kit is developed.