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When LT is LOW
These stickers can be read from and written to using the RC522 RFID Reader and a microcontroller like an Arduino
Proximity sensor
74HC00 Quad 2-Input NAND Gate
Light sensor (LDR) Decoders When LT is LOWIntroduction : LDR sensor module is used to detect the intensity of light. It is associated with both analog output pin and digital output pin. When there is light, the resistance of LDR will become low according to the intensity of light. This Light sensor module based on photodetector GL5528 to detect the light intensity Features : Input Voltage: DC 3. 3V to 5V. Output: Analog and Digital. Sensitivity adjustable. Applications : Street light auomatic
