MAX30100 OXIMETER SENSOR PROBLEM:
hi, someone knows about oximeter (30100)? i have a big problem, that sensor gives me problems like:
-doesn't recognize it, doesn't show me anything in the serial monitor
-recognize it when i disconnect the ground from the sensor, but this doesn't make sense so, is bad
1 Reply
Your issues sound like common I2C communication problems.
Try this checklist:
✓ Verify 3.3V power (not 5V)
✓ Add external 4.7kΩ pull-ups to 3.3V on SDA/SCL
✓ Run I2C scanner to find device address
✓ Check all connections are solid
✓ Try a different MAX30100 library (MAX30100lib by OXullo)
Let me know what the I2C scanner shows and I can help further!