Actions

DIY ECG notes: Difference between revisions

From HacDC Wiki

No edit summary
Line 1: Line 1:
== Notes and scratchpad for DIY ECG project ==
== Notes and scratchpad for DIY ECG project ==
Page maintained by [[User:Obscurite]]




Line 20: Line 22:
== References ==
== References ==


These sites, papers, and articles provide info on ECG making, A/D conversion, and signal processing:
These sites, papers, and articles provide info on ECG making, A/D conversion, signal processing, and general theory:


* [http://www.open-ecg-project.org/tiki-index.php OpenECG Project]
* [http://www.open-ecg-project.org/tiki-index.php OpenECG Project]
Line 30: Line 32:
* [http://www.radiolocman.com/shem/schematics.html?di=47010 DIY ECG howto (AD620A used in schematic) by Refik Hadzialic]
* [http://www.radiolocman.com/shem/schematics.html?di=47010 DIY ECG howto (AD620A used in schematic) by Refik Hadzialic]
* [http://extremeelectronics.co.in/avr-tutorials/using-the-analog-to-digital-converter/ AVR ADC tutorial (a little old)]
* [http://extremeelectronics.co.in/avr-tutorials/using-the-analog-to-digital-converter/ AVR ADC tutorial (a little old)]
* [http://en.wikipedia.org/wiki/Electrocardiography wikipedia ECG article]

Revision as of 05:55, 25 March 2010

Notes and scratchpad for DIY ECG project

Page maintained by User:Obscurite


PARTS for higher-precision version(s)

  • Instrumentation Amplifiers (not sure why these are priced so differently)
    • Both have CMMR of 110+ for gain of 1000, so they should both work equally well. AD624AD is referenced in the sciam article, but it also mentions the AD620A which is 1/3 the cost at about $7.
    • Cheaper version: AD620A
    • Expensive version: AD624AD

PARTS for basic version(s)

  • LM358 or LM324 (quad vs dual) op amps (or LF353 which is pin compatible)
  • Diodes
  • 0.1uF capacitor(s)
  • Variety of 1/4 watt resistors (10k, 100k, etc)
  • shielded wires for electrodes (phone or coax cables)
  • electrodes (soldered pennies, medical electrodes, etc)

References

These sites, papers, and articles provide info on ECG making, A/D conversion, signal processing, and general theory: