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74HC154 (4-to-16 Decoder/Demultiplexer)
The TC output is normally LOW and goes HIGH when a circuit reaches zero in the count-downmode or reaches '15' in the count-up-mode
Infrared is sent out by the sensor which bounces off objects
Since each photodiodes are coated with different filters each of them can detect the corresponding colours
High-Speed CMOS Type
FTDI Board (Switchable 3.3 or 5V) Infrared Temperature 74HC154 (4-to-16 Decoder/Demultiplexer)Introduction : FTDI Board (Switchable 3. 3 or 5V) is a breakout board for the FTDI FT232RL USB to serial IC. The pinout of this board matches the FTDI cable to work with 3. 3V Arduino boards. It can also be used for general serial applications. It allows a simple way to connect TTL interface devices to USB. Features : Chip : FT232RL. USB power supply, can choose 5V or 3. 3V ,set by jumper. Interface : Mini B USB. Output : 3. 3 or 5V. TX and RX LEDs.