Feature:
FUNCTION:This electronic module is used for qualitative detection of ambient light intensity.
SPECIALTY:Control interface: a total of 3 pins (GND, VCC, SIG), GND is the ground, VCC is the power supply, and SIG is the signal output pin.
DESIGN:Photoresistor, the model is GM5528, the greater the surrounding light intensity, the smaller the resistance, otherwise the larger the resistance.
PRACTICALITY:4pcs M2 screw positioning holes with an aperture of 2.2mm, which make the module easy to install and position, and realize the combination between modules.
PROFESSIONAL:The greater the surrounding light intensity, the smaller the photoresistor resistance; otherwise, the larger the photoresistor resistance.
Specification:
Condition: 100% Brand New
Item Type: Light Sensor Module
Control Interface: GND, VCC, SIG(GND is the ground, VCC is the power supply, and SIG is the signal output pin)
Photoresistance Model: GM5528
Screw Positioning Holes: 4pcs
Package List:
5 x Light Sensor Module
Note:
A0 port is a 10-bit analog-to-digital conversion interface, the full value after AD conversion is 1023, and under normal circumstances the reference voltage set by the Catduino motherboard is VCC (here 5V), 5V is 1023, due to photoresistor and 10K ohm resistor connected in series between 5V and GND, according to the principle of resistance division, (1023-AD0) / AD0 = R / 10K. Among them AD0 is the value after AD conversion read from A0 port, R is the resistance value of the photoresistor to be measured, the resistance value can be calculated by this formula and the intensities of the surrounding light can be judged.