DAGON Lighting
SPL-3 –
RGB LED strip driver – DMX-512 and others
18
3.3.3. Example configuration of the controller SPL-3 for RANDOM mode.
553 - RANDOM mode operation
500 - smooth color change
651 - active white balance correction
760 - reduced to 60% shade of red R
899 - shade of green G max
999 - shade of blue B max
565 - average speed of the smooth change of color
570 - the brightness control by signal 0-10V analog in input IN B
These 8 codes must be entered into the controller SPL-3, to work in a desired manner.
The order of input codes is optional.
Adjust the brightness of LEDs using the analog signal at input IN B can be used to make a
simple light sensor controls the brightness of the LEDs connected to the SPL-3 - Figure 5.
Included light dependent resistor should be exposed to daylight. When night falls light
dependent resistor resistance increases and the voltage divider at the output of the R-LDR also
increases. The result is a brightening of the LED at dusk and at night, and the dimming or
total extinction of light in the day (at the time when around LDR is clear).
Using this solution in many cases, you can save electricity that would be wasted during
power LEDs in the day when the glow is not necessary.
Choosing the type of light dependent resistor LDR and R-value resistor should be
remembered that the input impedance input IN B is approx 16.7k
Ω
point GND system and,
therefore, it is still attached to the parallel resistance LDR.
Fig.5. The realization of light sensor in the SPL-3.
R – resistor with a fixed value, LDR – light dependent resistor