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SCD43 - Getting started

Arduino library

To install the Arduino library, you can use the Arduino library manager or download it from the GitHub repository:

SCD43 Arduino library

Arduino library for the SCD43 CO2, temperature and humidity sensor by Soldered

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First time Arduino user? For a detailed tutorial on how to get started with Arduino, see this section of our docs:

Getting started with Arduino

A full, comprehensive tutorial on how to fully set up and upload code for the first time on an Arduino board, from scratch!


Connections

NULA DeepsleepSCD43
QwiicQwiic

If you'd rather wire the sensor directly instead of using a Qwiic cable, connect it to the K1 header like this:

NULA DeepsleepSCD43 (K1 header)
3V33V3
GNDGND
SDASDA
SCLSCL
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The SCD43 communicates over I2C with a fixed address of 0x62. This address cannot be changed.