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-15%
PIR Motion Sensor
$13.20 $15.50  
5 pc(s)
This is a simple to use motion sensor. Power it up and wait 1-2 seconds for the sensor to get a snapshot of the still room. If anything moves after that period, the 'alarm' pin will go low. Red wire is power (5 to 12V). White wire is GND. Black wire is open collector Alarm....
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Mini Photocell (LDR - Light Dependent Resistor)
$1.00  
68 pc(s)
This is a very small photocell. A photocell changes (also called a photodetector , CdS or photoconductive cell) resistance depending on the amount of light it is exposed to. These little sensors make great ambient light triggers (when light in the room turns on, do something)....
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Infrared Receiver Diode (TSOP38238)
$3.00  
33 pc(s)
Use this simple IR receiver for infrared remote control of your next project. With low power consumption and an easy to use package, it mates well with embedded electronics and can be used with common IR remotes. The TSOP38238 is a miniaturized receiver for infrared remote control...
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Sharp Infrared Distance Sensor GP2Y0A02YK - 20 to 150cm
$16.80  
5 pc(s)
This popular sensor made by Sharp produces an analog output that varies from 2.5V at 20cm to 0.4V at 150cm. The sensor has a Japanese Solderless Terminal (JST) Connector. You can purchase a pre-made cable with connector that mates with this sensor. See 3-pin Cable for Sharp Sensors...
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Piezo Element
$2.90  
2 pc(s)
Piezo elements come in handy when you need to detect vibration or a knock. You can use these for tap or knock sensors pretty easily by reading the voltage on the output. They can also be used for a very small audio transducer such as a buzzer. Documents: Datasheet...
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Sharp Infrared Distance Sensor GP2Y0A21YK - 10 to 80cm
$12.70  
2 pc(s)
This popular sensor made by Sharp produces an analog output that varies from 3.1V at 10cm to 0.3V at 80cm. The sensor has a Japanese Solderless Terminal (JST) Connector. You can purchase a pre-made cable with connector that mates with this sensor - see 3-pin cable for Sharp Sensors...
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Temperature Sensor - TMP36
$2.90  
375 pc(s)
The TMP36 are low voltage, precision centigrade temperature sensors. They provide a voltage output that is linearly proportional to the Celsius (centigrade) temperature. The TMP36 do not require any external calibration to provide typical accuracies of ±1°C at +25°C and ±2°C over the −40°C...
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Parallax PING))) Ultrasonic Sensor
$58.50  
2 pc(s)
Parallax's PING)))™ ultrasonic sensor provides a very low-cost and easy method of distance measurement. This sensor is perfect for any number of applications that require you to perform measurements between moving or stationary objects. Naturally, robotics applications are very popular but...
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SRF02 Low Cost Single Transducer Ultrasonic Range Finder
$23.80  
Out-of-stock
The SRF02 is a single transducer ultrasonic rangefinder in a small footprint PCB. It features both I2C and a Serial interfaces. The serial interface is a standard TTL level UART format at 9600 baud,1 start, 2 stop and no parity bits, and may be connected directly to the serial ports on...
Out-of-stock
Force Sensitive Resistor 0.5" (FSR402) - Male Pin Header
$9.90  
1 pc(s)
This is a force sensitive resistor with a round, 0.5" diameter, sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will...
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-71%
USB Weather Board
$50.00 $175.00  
2 pc(s)
Got weather? This board can handle it. The USB Weather Board includes onboard sensors for barometric pressure, humidity, temperature, and light level. We've also added headers in the new version so you can connect the board to the weather meters (not included), adding sensors for wind...
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Force Sensitive Resistor - Square (FSR406) - Male Pin Header
$15.50  
4 pc(s)
This is a force sensitive resistor with a square, 1.75x1.5", sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be...
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