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Newest Products!

Current Sensor 30 Amp
Current Sensor 30 Amp
$8.95


Arduino Pro
Arduino Pro
$19.95


Seeeduino Mega
Seeeduino Mega
$43.00


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Arduino Legs

$0.99
Raise your Arduino off of your workbench! Avoid shorts with solder balls, snipped wires, pennies... etc. 
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Red LED, 5mm, clear

$0.40  
Red LED, 5mm, clear
Warning, warning, the Red LED is on! 
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Ultraviolet LED, 5mm

$0.65  
Ultraviolet LED that glows purple. 
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Photoresistor Light Sensor

$2.95  
Photoresistor/Light Sensor
This little sensor detects light intensity. More light allows more current to flow. Use this sensor to turn something on/off when it is day/night, follow a light source, etc. 
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Reed Switch

$1.65  
Reed Switch
This is a non-contact magnetic switch. Put a magnet near it and the switch closes, and current flows. Take the magnet away, and the switch opens. Perfect for detecting doors opening, etc. 
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Rare Earth Magnet

$0.95  
This little magnet is crazy strong. Seriously, put 2 of them together and it is difficult to separate them! Perfect for reed switches. 
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Digital Temperature Sensor DS18B20

$3.95  
Is it hot in here? This digital temperature sensor will tell you, with 9 to 12 bit resolution! Uses only 1 wire to the microcontroller for communication. Simple to use and highly accurate. See our tutorial section for instructions and Arduino software. 
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Potentiometer 10k

$1.95  
10k Linear Trimming Potentiometer, breadboardable (see photo). Good for analog to digital converter input. Use this to set a variable input for control. 
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Piezo Buzzer

$4.95
Piezo Buzzer, a loud one. Plug this directly into an Arduino/microcontroller IO pin and use it to signal events. With no resistor, this thing is LOUD. But you can tone it down as low as needed with a resistor or potentiometer. 
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LCD HackPack

$16.95
This pack includes an LCD module of your choice, and everything else you need to connect it to your Arduino. See our Tutorial section for step by step instructions. Soldering is required, but the male header pins are included. 
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