Internet access is required to access the ObservAir Cloud Dashboard.
Consult the ObservAir Cloud Dashboard manual for more information.
3.8. Computer (serial USB) connection
The ObservAir can stream data and receive commands via a USB serial
connection to a computer. While any serial monitor may be used to
communicate with the sensor, we recommend the free and open source
Arduino Serial Monitor for the basic operations outlined in this manual.
The ObservAir desktop software is also capable of interfacing with the
sensor, but a command terminal is not currently available. See the
ObservAir Desktop Software manual for more information.
3.8.1. Connecting to Arduino Serial Monitor
Follow the steps outlined below to connect the ObservAir to the serial
monitor.
1. The Arduino IDE can be downloaded and installed from
https://www.arduino.cc/en/main/software. Download a version prior
2.0
2. With the sensor turned on and operating normally without errors (LED
button is breathing slowly), connect the ObservAir to the computer
using the micro USB cable.
3. Open the Arduino software and select the ObservAir’s serial port from
the “Tools” menu. For Mac OSX, the port is called /dev/cu.usbserial-
DN43xxxx, as shown in Figure 15 below. Windows does not use port
naming, and so the port must be found by process of elimination.
4. In Arduino, open the “Serial Monitor” from the “Tools” menu.
5. From the pulldown menus at the bottom of the Serial Monitor, select
the “Both NL & CR” and “115200 baud” settings (Figure 16).
6. With the Serial Monitor configured, ObservAir data is displayed in real
time at the time interval set by the user. Commands can also be sent
to the sensor using the dialog box at the top of the Serial Monitor
window.
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