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CHAPTER 11: TIPS AND TRICKS
11.1 TIPS AND TRICKS
11.1.1 COMBINING ALERTWERKS WIRED AND WIRELESS
The old series of IoT and environmental products has existed for more than 10 years. Both series allow the use of virtual
sensors. Using these and SNMP is the way to combine both platforms. However, AlertWerks™ Wired initially only knew
integer values. So the old AlertWerks Wired (ServSensor) did not have 13.8 degrees celsius, just 13 or 14 degrees celsius.
That is why the old series just delivers integer values by SNMPGET. The updated series AlertWerks Wired Plus therefore
multiplies the value. When getting the values in you need to divide them again by the corresponding factor.
The SNMP Tree of AlertWerks Wireless IoT Web for combining both series provides all values either as string (for example
„13.8") or as multiplied (by 1000) value for the Wired series. Enter multiplying factor 0.001 for your virtual sensor in
AlertWerks Wired accordingly.
The SNMP Tree for AlertWerks Wireless IoT Web is very simple. The OID .1.3.6.1.4.1.6878.x.y1.y2.z where x is either 1 for
physical sensors or 2 for virtual sensors, y1 and y2 is MSB and LSB of the index number of the sensor and z is either 1 for
the string representation of the value, 2 for the name of the sensor, and 3 for the multiplied integer value of the sensor.
Unless you need special information pieces from AlertWerks Wired, the method of using the integration (see Chapter
10) is recommended.
11.1.2 ACCESSING THE DATABASE
AlertWerks IoT Web is an open platform, so you can access the database directly. The database being used is MariaDB.
We set up an account just for reading values from the database.
Credentials are iot as a username and iot as the password
Port used is the standard port 3306.
This account does not have access rights for all tables and does not have the right to change tables or values. If you
want to use data for other systems and platforms, however, this may be, apart from using SNMP, the easiest and fastest
way to accomplish this task.
11.1.3 ACCESSING LINUX
The top menu while using HDMI/USB of the unit enables you to access the bash. Since Black Box tech support does not
provide assistance with Linux, we recommend that only experienced Linux professionals use this feature.
An IT professional may use the bash for security purposes. Since no firewall is configured, you should not place
AlertWerks IoT Web as-is in any DMZ.
11.1.4 CHANGING THE ALARM SOUND
The Settings page allows you to upload audio files in WAV or MP3 format. The standard alarm sound alarm.wav is not removable, but
your uploaded audio files can then be selected when amending the action defined.
11.1.5 UNTESTED AND UNCERTIFIED LORAWAN SENSORS
While joining a sensor you need to provide the vendor and part number. For every one of these a payload decoder is
configured. If you want to use any sensor not listed and if doing an update of the unit did not help, then you may want
to configure your own payload decoder.
You need to have know how to do this in PHP programing and you need to have certain knowledge about your sensor.
If that is the case, visit http://<youripofalertwerksiotweb>/sensortypes.php.
If you do not know how to do that, Black Box can offer a paid and managed service, since Black Box technical support
will not support problems caused by improper programming.
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