The pulse oximeter and heart rate sensor are ONLY recognized when it is directly connected to an Arduino Uno WiFi Rev2. However, the sensor is NOT recognized/detected when I used a bidirectional logic converter (BSS138). I ran the I2C_Scanner sketch to check the SDA/SCL and I’m getting an “unknown error at address 0x55”. Also, I tried connecting pull-up resistors to the I2C it doesn’t work.
*Sensors are recognized without errors using an Arduino Uno R3. I’m using the Example1_config_BPM_Mode1 sketch.