The Digital LDR Module is used to detect the presence of light / measure the intensity of light. The output of the module goes high in the presence of light, and it becomes low in the absence of light. The sensitivity of signal detection can be adjusted using the potentiometer.
Use it to detect the light brightness in your environment and decide to switch OFF or ON the light. Or maybe to adjust the brightness of the LED of your house?
You can adjust the threshold (sensitivity) of the digital output by tuning the onboard variable resistor (potentiometer). Simple usage, as it is the digital output, so you will know if the light is present and decide what to do with it.
How it works
1. Module light conditions or light intensity reach the set threshold; DO port output high when the external ambient light intensity exceeds a set threshold, the module D0 output low.
2. Digital output D0 directly connected to the MCU and detect high or low TTL, thereby detecting ambient light intensity changes;
3. The digital output module DO can directly drive the relay module, which can be composed of a photoelectric switch.
Pin details
VCC ↔ 3.3V to 5V DC.
GND ↔ Ground.
DO ↔ Digital Output
Features:
1. LM393-based design.
2. It can detect ambient brightness and light intensity.
3. Adjustable sensitivity (via blue digital potentiometer adjustment).
4. Output Digital – 0V to 5V, adjustable trigger level from preset.
5. LEDs indicating output and power.
Package Includes:
1 x LDR Module.
