swharden/diyecg-1opamp

A surprisingly good ECG circuit using a single op-amp and some Python software

Scott W Harden, DMD, PhD

• Personal website: https://swharden.com
• How to reach me: [email protected]

diyecg-1opamp's Issues

where can I find demo_ecg.wav

Scott.. I'm enjoying playing with your diyECG project.. I'm doing some experimentation with high frequency QRS waves in an ECG and your circuit and sw are a great starting point !. I've proted the SW to use Qt5 on a Mac and its working well. I noticed you mention a .wav sample demo_ecg.wav .. I can't find it. Any chance you could post it or send it to me at [email protected]

Thanks for this great project !
John cohn

Only 5 data points on graph

First, let me say thanks for this very interesting project.

I just made it and it seems to work, however, I'm getting just 5 data points on graph as you can see on http://mjesec.ffzg.hr/~dpavlin/tmp/ECG_1470671653.png

My opamp is LM358, and while it's spec is not same as LM741, they seem close enough.

I'm python newbie, so any help in resolving this would be appreciated.

Won't start

Hi,
I really want to get this working but every time I click the batch file I get an error.

I have windows 10, I downloaded the recommended version of winpython, and renamed the go.bat file exactly as in your video.
I have no idea of what to do or what is going on but I have no experience with python and could really use help.
I did notice that none of my pthyon applications have ".exe" next to them, but they still run when I click on them.
Thank you.

'Electrodes' won't detect anything.

Hello Scott,
first of all your ECG work is amazing!! I'm currently studying electromedicine and I always wanted to make a simple electrocardiograph with not such expensive components, and you already did it!
I tried to follow all the steps to make it work but when I connect it to the computer, I don't get the ECG wave like yours. I am obviously doing something wrong but I dont know what it is.
I changed the path of the python.exe and made it run but, when it comes to the circuit I probably did something wrong. Here's a picture of how I made it.