Description
Overview of this 3 pin ldr Sensor module
Features:-
- Can detect ambient brightness and light intensity
- Adjustable sensitivity (via blue digital potentiometer adjustment)
- Operating voltage 3.3V-5V
- Output Type
- RW-30
- Analog voltage output -A0
- Digital switching outputs (0 and 1) -D0
- With fixed bolt hole for easy installation
- Small board PCB size: 3cm * 1.6cm
- Power indicator (red) and the digital switch output indicator (green)
- Using LM393 comparator chip, stable
Specification
| Specification | Details |
|---|---|
| Model | 3 pin ldr Sensor module |
| Operating Voltage | 3.3V – 5V |
| Output | Analog |
| Sensing Method | Photoresistor |
| Sensitivity | High |
| Sensing Range | Depends on ambient light conditions |
| Response Time | Less than 5 milliseconds |
| Dimensions | Varies depending on model |
| Pinout | VCC, GND, Analog output |
| Application | Light intensity measurement, automatic lighting control, light-based alarms |
| SKU | RW-30 |
Pin outs:-
- External 3.3V-5V VCC
- External GND GND
- DO digital output interface, a small plate (0 and 1)
- AO small board analog output interface
How to use:-
- Photosensitive resistor module most sensitive to environmental light intensity is generally use to detect the ambient brightness and light intensity.
- 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;
- Digital output D0 directly connected to the MCU, and detect high or low TTL, thereby detecting ambient light intensity changes;
- Digital output module DOÂ can directly drive the relay module, which can be composed of a photoelectric switch;
- Analog output module AO and AD modules can be connected through the AD converter, you can get a more accurate light intensity value
