DIY ECG notes: Difference between revisions
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** Cheaper version: [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=AD620ANZ-ND AD620A] | ** Cheaper version: [http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=AD620ANZ-ND AD620A] | ||
** Expensive version: [http://parts.digikey.com/1/parts/453660-ic-amp-inst-25mhz-prec-ln-16cdip-ad624ad.html AD624AD] | ** Expensive version: [http://parts.digikey.com/1/parts/453660-ic-amp-inst-25mhz-prec-ln-16cdip-ad624ad.html AD624AD] | ||
* Better op amp - OP97 (need to review data sheet) | |||
== PARTS for basic version(s) == | == PARTS for basic version(s) == |
Revision as of 06:01, 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)
- Better op amp - OP97 (need to review data sheet)
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:
- OpenECG Project
- Scientific American, Shawn Carlson
- DIY ECG, Scott Harden
- DIY ECG Improvements, Scott Harden
- DIY ECG, Jason Nguyen
- ECG Measurement System, Chia-Hung Chen, Shi-Gun Pan, Peter Kinget
- DIY ECG howto (AD620A and OP97 used in schematic) by Refik Hadzialic
- AVR ADC tutorial (a little old)
- wikipedia ECG article