Sensors

US$17.42
Measure liquid/water flow for your solar, computer cooling, or gardening project using this handy basic flow meter.
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US$15.33
This is a complete color detector, including a TAOS TCS3200 RGB sensor chip and 4 white LEDs. The TCS3200 can detect and measure a nearly limitless range of visible colors.
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US$3.09
The MMA8452Q is a smart low-power, three-axis, capacitive micromachined accelerometer with 12 bits of resolution. This accelerometer is packed with embedded functions with flexible user programmable options, configurable to two interrupt pins.
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US$18.15
This is designed for use with the Zumo shield for Arduino.
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US$5.45
Based on a unique capacitive cell, these relative humidity sensors are designed for high volume, cost sensitive applications such as office automation, automotive cabin air control, home appliances, and industrial process control systems.
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US$0.93
They are simple angle brackets with one threaded and unthreaded hole. Use them for connecting PCBs at 90 degree angles, mounting accelerometers, gryros, etc. They can also be used on the universal plate set for mounting all sorts of sensors and such.
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US$20.93
This is a temperature sensor board that includes an IDS cable and a 4 pin male connector. This temperature sensor used TMP100 chip is ideal for extended temperature measurement in a variety of communication,consumer, environmental,and instrumentation applications,etc...
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US$18.13

This is a UV sensor that includes a IDS connector and a 3 pin male header. This UV Sensor(Gadgeteer compatible)used GUVA-S12SD chip is suitable for detecting the UV raditation in sunlight. 

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US$59.95
The PN532 is the most popular NFC chip, and is what is embedded in pretty much every phone or device that does NFC. It can pretty much do it all, such as read and write to tags and cards, communicate with phones (say for payment processing), and 'act' like a NFC tag. If you want to do any sort of embedded NFC work, this is the chip you'll want to use!
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US$2.49
This phototransistor responds to visible light as well as the lower infrared range.
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US$0.55

This is a 6-pin 1.5mm pitch connector which mates directly with the connector on the Sharp GP2Y1010AU0F (COM-09689) optical dust sensor.

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US$1.39
The FIT0187 rubber ring is used to affix ultrasonic sensor. It fits URM37 and URM04.
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US$3.77
This steam sensor can be connected to the Arduino IO Expansion shield directly. The output voltage will increase when the humidity of the sensor surface goes up.
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US$2.73
Probe diameter: 18mm, Includes: Bracket (1 unit), Screw sets ( 2 units).
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US$12.53

This sensor is for line tracking purpose. It detects white and black color, and it outputs via TTL signal. You can even combine several sensors to meet your specific requirements. 

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