We're using nRF52 to read two sensors data: one is an ADC chip using SPI; the other is a PPG sensor using I2C. MCU sampling rate is 250Hz, meaning every 4ms, MCU will poll the two sensor chips in sequence and transmit data out through BLE. The two sensors own sampling rates are higher.
The problem we face now is that there are outlier data points in the both data, though not often, once in a few thousand, and quite ramdon. Outlier in the ADC sensor is much more than that of PPG sensor.
Anyone has good experience or expertise on this issue? I wonder if it is normal to have that outlier point.
