2024-06-13 19:21:56 +00:00
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## Overview
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Here are notes for myself and others interested in building DIY ECG
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equipment. There are many ways to skin this particular err.. project,
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from crude to incredibly complex. Here are lists of parts, websites,
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theory, etc.
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Page maintained by [User:Obscurite](User:Obscurite "wikilink") who is
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working on his own ECG equipment. Enjoy.
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## PARTS for higher-precision version(s)
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- Instrumentation Amplifiers (not sure why these are priced so
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differently)
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- Both have CMMR of 110+ for gain of 1000, so they should both work
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equally well. AD624AD is referenced in the sciam article, but it
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also mentions the AD620A which is 1/3 the cost at about \$7.
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- Cheaper version:
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[AD620A](http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=AD620ANZ-ND)
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- Expensive version:
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[AD624AD](http://parts.digikey.com/1/parts/453660-ic-amp-inst-25mhz-prec-ln-16cdip-ad624ad.html)
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- Better op amp - OP97 (need to review data sheet)
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## PARTS for basic version(s)
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- LM358 (dual opamp) or LM324 (quad opamp), or LF353 (which is pin
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compatible)
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- Diodes
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- 0.1uF capacitor(s)
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- Variety of 1/4 watt resistors (10k, 100k, etc)
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- shielded wires for electrodes (phone or coax cables)
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- electrodes (soldered pennies, medical electrodes, etc)
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- diodes (1N4001)
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## Microcontrollers and FPGAs
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- Atmel atmega168/328 has onboard ADC
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- Xilinx Spartan3E dev board has built in ADC
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## References
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These sites, papers, and articles provide info on ECG making, A/D
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conversion, signal processing, projects, and general theory:
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General info:
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- [OpenECG Project](http://www.open-ecg-project.org/tiki-index.php)
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- [Scientific American, Shawn
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Carlson](http://www.scientificamerican.com/article.cfm?id=home-is-where-the-ecg-is)
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- [AVR ADC tutorial (a little
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old)](http://extremeelectronics.co.in/avr-tutorials/using-the-analog-to-digital-converter/)
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- [wikipedia ECG
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article](http://en.wikipedia.org/wiki/Electrocardiography)
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- [EKG Report from ITP (describes the Ramsey kit circuit,
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etc)](http://itp.nyu.edu/physcomp/sensors/Reports/EKG)
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DIY Projects (some with tutorials):
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- [DIY ECG, Scott
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Harden](http://www.swharden.com/blog/2009-08-14-diy-ecg-machine-on-the-cheap/)
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- [DIY ECG Improvements (based on Jason Nguyen's 6 opamp design), also
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from Scott
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Harden](http://www.swharden.com/blog/2009-01-20-diy-ecg-improvements/)
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- [DIY ECG, Jason
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Nguyen](http://www.eng.utah.edu/~jnguyen/ecg/ecg_index.html)
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- [ECG Measurement System, Chia-Hung Chen, Shi-Gun Pan, Peter
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Kinget](http://www.cisl.columbia.edu/kinget_group/student_projects/ECG%20Report/E6001%20ECG%20final%20report.htm)
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- [DIY ECG howto (AD620A and OP97 used in schematic) by Refik
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Hadzialic](http://www.radiolocman.com/shem/schematics.html?di=47010)
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- [Refik Hadzialic's AVR ADC code for his
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ECG](http://www.rlocman.ru/i/File/2008/04/15/egg.txt)
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- [Holter ECG based on AVR by Dragisa
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Jankovic](http://www.gilefx.com/avrecg.htm)
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- [also an ARM based Holter ECG by Dragisa
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Jankovic](http://www.gilefx.com/armecg.htm)
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- [Homemade EKG by Jake Haglund](http://www.diyhappy.com/homemade-ekg)
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- [Dual-purpose EEG/EKG by artist/composer Adam
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Overton](http://plus1plus1plus.org/Resources/EEG-EKG)
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Kits:
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- [Ramsey ECG
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kit](http://www.ramseyelectronics.com/cgi-bin/commerce.exe?preadd=action&key=ECG1C)
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2024-06-13 01:48:44 +00:00
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[Category:DIY_ECG](Category:DIY_ECG "wikilink")
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