Quick Start

1. Connect the SEN54 Sensor to your Arduino board's standard I2C bus. Check the pinout of your Arduino unoboard to find the correct pins. The pinout of the SEN54 Sensor board can be found in the data sheet.

SEN5X Arduino Jumper Wire VCC 5V Red GND GND Black SDA SDA Green SCL SCL Yellow SEL GND for I2C Blue

2. Pin Name Description Comments 1 VCC Supply Voltage 5V ±10% 2 GND Ground 3 SDA I2C: Serial data input / output TTL 5V and LVTTL 3.3V compatible 4 SCL I2C: Serial clock input TTL 5V and LVTTL 3.3V compatible 5 SEL Interface select Pull to GND to select I2C 6 NC Do not connect

3. Connect the SEN54 Sensor to your Arduino board's standard I2C bus. Check the pinout of your Arduino unoboard to find the correct pins. The pinout of the SEN54

4. Pin Name Description Comments 2.1 VCC Supply Voltage || 5V ±10% 2.2 GND Ground 2.3 SDA I2C: Serial data input / output || TTL 5V and LVTTL 3.3V compatible 2.4 SCL I2C: Serial clock input || TTL 5V and LVTTL 3.3V compatible 2.5 SEL Interface select || Pull to GND to select I2C 2.6 NC Do not connect

5. Open Arduino IDE

6. Or try Example File => Examples => Sensirion I2C SEN5X => exampleUsage (Installed library)

7. Click the Upload button in the Arduino IDE or

8. Sketch => Upload

9. When the upload process has finished, open the Serial Monitor or Serial Plottervia the Tools menu to observe the measurement values. Note that the Baud Rate in the corresponding window has to be set to 115200 baud.