The card10 is a portable ecg (besides many other things) and I was so happy to get my own recently.

I’m particularly interested in the MAX30001 for the ecg function, which is possible in two ways:

• directly suppling the lead with the finger of the opposing hand or
• with external usb-cable attached to cords.

The firmware gets regular updates fast improving the handling, in particular easy updates of code by soft reset in the most recent update.

I’m currently writing my own code for the ecg app calculating the QT interval using mu that eventually should end up in my gitlab repo.