Table 4. List of audio messages for the Smart Lock application (continued)
2
Registration Successful
Registration
3
Registration Failed
Registration
4
Look at Camera
Registration
5
Starting Deregistration
De-Registration
6
Deregistration Successful
De-Registration
7
Deregistration Failed
De-Registration
8
Recognition Successful
Recognition and entering low-power mode
9
Fake Face
Recognition
10
Recognition Failed
Recognition and entering low-power mode
11
Enter Sleep
Entering low-power mode
12
Bluetooth Connected
Bluetooth connectivity
13
Bluetooth Disconnected
Bluetooth connectivity
To change the speaker volume, type the “volume” command followed by a value between 0 and 100. To disable audio prompts
entirely, simply enter the value 0 for the speaker volume.
SHELL>> volume 25
Volume set
SHELL>> volume
Current volume is 25
Figure 58. Speaker volume commands
6.7 Configure LED brightness
6.7.1 IR LED
The SLN-VIZN3D-IOT kit embeds an IR LED controlled by an LED driver which can be used to modulate its power according to
the lighting conditions. The RT117F uses a PWM signal with a configurable duty cycle set by a serial command to control the
LED driver.
To change the power emitted by the infrared LED, type the command “ir_pwm” followed by a value between 0 and 100.
The IR LED can be harmful for the human eye so we recommend not to exceed 35% power and never look at the
IR LED directly.
CAUTION
SHELL>> ir_pwm 20
Brightness set
NXP Semiconductors
Additional features
SLN-VIZN3D-IOT Kit User Guide, Rev. 0, 01 November 2021
User Guide
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