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It is used for electrically connecting or disconnecting circuits
The presence of dust can be detected by the photometry of only one pulse
connect the outer two pins to VCC and 0 V and the center pin outputs a variable voltage between 0 V and VCC as the potentiometer is rotated
A potentiometer is also there in the module to adjust the detection distance
USB Host Shield Compatible with Arduino 70 mm Diameter It is used for electricallyA USB Host Shield is an inexpensive development board, which is designed to be used in embedded Applications which require USB Host functionality. The board supports USB 2. 0 full low speed operation. Its Primary target platform is Arduino, however, it can also be used with any other micro equipped with an SPI interface. Features : USB Host Shield. Arduino, Crowduino, Seeeduino, Arduino Mega and Crowduino Mega compatible. Operating Voltage 5V DC.
US$ 90.00
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