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tlfong01
tlfong01
4:42 AM
Ｙｏｕｒ　ｒｉｇｈｔ　ｌｅｇ　ｄｉｓｃｕｓｓｉｏｎ　ｉｓ　ｇｏｏｄ．　Ｉ　ｆｏｕｎｄ　Ｓｃｏｔｔ　Ｓｅｉｄｍａｎ＇ｐｒｏｆｉｌｅ　ｉｎｔｅｒｅｓｔｉｎｇ：https://electronics.stackexchange.com/users/11684/scott-seidman　Scott Seidman
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＊＊＊Engineering Educator＊＊＊, Biomedical Engineering, Bioinstrumentation, Embedded Systems, Medical Devices, Design
 
tlfong01
tlfong01
5:07 AM
I noticed one difference between the EE SE answers and mine is that I focus on module level, or system integration problems, almost always never at lower op amp level. Take the ECG Q&A as an example, you see that I give a lot of references, and debugged demo programs, and real life example python programs.
(1) Raspberry Pi 3B+ interface with Heart Monitor AD8232 using MCP3008 and SPI pins - Asked 1 year, 7 months ago, Viewed 4k times
https://raspberrypi.stackexchange.com/questions/96482/raspberry-pi-3b-interface-with-heart-monitor-ad8232-using-mcp3008-and-spi-pins/96498#96498

(2) How can Rpi read the MAX30100 / MAX30102 Oximeter? Asked 7 months ago Active 1 month ago, Viewed 2k times
https://raspberrypi.stackexchange.com/questions/111955/how-can-rpi-read-the-max30100-max30102-oximeter
 
 
9 hours later…
tlfong01
tlfong01
2:14 PM
Now I have set up the I2C AD5933 module and found Rpi4B can detect it without any problem. Next step is to write a little python to measure the impedance.
 
tlfong01
tlfong01
2:42 PM
About the right leg circuit, I remember the first article I read about the 10 lead ECG is based on the Einthoven Triangle - Wikipedia
https://en.wikipedia.org/wiki/Einthoven%27s_triangle. The very clever guy invented this triangle the late 1800's, and got a Nobel prize in medicine. I remember I spent a couple of hours clarifying the basic things, and explain to a medi guy how the triangle works, and how to memorize the meaning of the names of the 10 leads. One thing I was very impressed is the following: The 12 leads are placed on the serface of the body, but what is interpreted is the h…
Ah bed time, call it a day, see you tomorrow.
 

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