Data logger for multiple carbon dioxide (SCD30) and oxygen…
In this project, we recorded CO2 and O2 data from six Sensirion SCD30 and Grove-ME2-O2 sensors using Arduino MEGA. While the ME2-O2 produce analog output, the SCD30 communicate via the I2C interface. Each SCD30 sensor has the same permanent I2C address, therefore, we use TCA9548A I2C multiplexer to read multiple SCD30. The real-time data was displayed using low power Nokia 5110 LCD module and recorded to the sd card.
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