Last Updated on December 31, 2024 by pg@petergamma.org
For this project replace the sound card in the DIY ECG with AD8232 of Scott W. Hardens Sound Card ECG
with the ADS1115 16-Bit Analog-to-Digital Converter
The Adafruit version of the ADS1115 is also available in Switzerland:
And Adafruit has a manual for the ADS1115:
https://cdn-learn.adafruit.com/downloads/pdf/adafruit-4-channel-adc-breakouts.pdf
Which shows for instance how to connect the ADS1115 to a Raspberry Pi. The idea for this is from Peter Gamma from www.petergamma.org
who is NOT an electronic engineer. So do it at your own risk. But if this circuit works, we can build with it a 3 channel Gold standard ECG device, and there is one channel left for a spirometer. If this device works, it could eventually replace a TA 220 from iWorx which costs thousands of dollars. But the circuit described here costs Raspberry Pi included less than 100 USD (spirometer not included).