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oxullo / Arduino-MAX30100

Arduino library for MAX30100, integrated oximeter and heart rate sensor
GNU General Public License v3.0
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Max30100 working problem #50

Closed ahmedbashar closed 6 years ago

ahmedbashar commented 6 years ago

Hi, I have a problem with max30100 working, it is working only with 5v, but it is not working with 3.3v..what is the problem, please??

oxullo commented 6 years ago

MAX30100 works with a max Vdd of 2.0V, typically 1.8V. Every other voltage rail (eg: LED power DRV/LED, I2C lines pullups and INT) accept typically 3.3V, max 5V. I can confirm that it works with 3.3V I2C bus signalling. If you need further help, read the README and eventually open a ticket answering all the questions in the ticket template.