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SLN-VIZNAS-IOT User Guide, Rev. 1.1, 10/2020
NXP Semiconductors
Once registered, recognition of your face (done simply by placing your face in front of the
camera fo
r a brief moment) will prompt a “Welcome Home” message, indicating the kit
has detected a recognized face.
Figure 36: "Welcome Home" Message
Simply follow the same procedure to add additional faces into the system.
NOTE: If you are having trouble successfully registering a face, try adjusting your proximity to the
camera (either closer or further away), and additionally try slowly moving your head left-right and
up-down so that the camera can get a better view of different angles of your face. If after following
these instructions you are still experiencing trouble, ensure that the face being registered is
sufficiently well lit for both the IR and RGB cameras by adjusting the pwm values for the IR and
white LEDs. For more information, check out the
guide.
3.2 Serial Commands
In order to access the full suite of features that the SLN-VIZNAS-IOT has to offer,
communication via serial is needed. Using serial, users can be added and deleted, the
camera’s detection resolution can be configured, as well as several additional capabilities.
In this section, we will show a full list of available serial commands and cover them in-
depth.
3.2.1 List Available Commands
To display a list of all available commands you can run, type the command “
help
.” This
command will output a list similar to that shown below which details all available
commands and their arguments: