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COM-10790 Rotary Encoder - 200 P/R
COM-10790 Rotary Encoder - 200 P/R
US$53.13
This 200 pulse per rotation single-output encoder outputs electrical pulses which you can interpret using a microcontroller to find the position of the input shaft. This allows you to add feedback to motor control systems. Encoders of this kind are often used in balancing robots and dead reckoning navigation.
Delivery within 2-3 weeks
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KIT-14478 Makey Makey Classic by JoyLabz
US$69.93
You may be the greatest living banana pianist, but how will you ever know if you don’t make yourself a banana piano? Good news! That project and countless others are easier than you think with Makey Makey. Using the Makey Makey you can make anything into a key just by connecting a few alligator clips. The Makey Makey Classic by JoyLabz is an invention kit that tricks your computer into thinking that almost anything is a keyboard. This allows you to hook up all kinds of fun things as an input. For example, play Mario with a Play-Doh keyboard or piano with fruit!
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COM-15350 Speaker 40mm Thin 8ohm 0.5W with wires
US$1.33

This 0.5W, 8Ohm speaker is only 40mm in diameter and just over 4mm thick. If you want to get some sound out of your project but have a tight space budget, this is a good way to do it.

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PRT-08808 ProtoBoard - Square 1" Single Sided
PRT-08808 ProtoBoard - Square 1" Single Sided
US$2.79

This is a 1 inch single sided square protoboard. Standard 0.1" spacing with a 4-40 (3mm) hole for mounting. Every three holes are connected with a 20mil trace.. sold in package of 2.

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WRL-12847 XBee Shield
US$34.93
Xbee radios are an awesome way to add wireless capability to your Arduino project and now it’s even easier with the XBee Shield. The shield form-factor mates directly with any dev board that has an Arduino standard footprint and equips it with wireless communication capabilities using the popular XBee module. 
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SEN-09376 Force Sensitive Resistor - Square
SEN-09376 Force Sensitive Resistor - Square
US$18.80
This is a force sensitive resistor with a square sensing area of 1.75x1.5". 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 larger than 1MΩ.
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GPS-11571 50 Channel GP-635T GPS Receiver
GPS-11571 50 Channel GP-635T GPS Receiver
US$48.93
This  is a slim GPS module with -161dBm tracking sensitivity and only 27 second cold start time. The slim design makes it ideal for applications where you don't have a lot of space to work in. Really it's quite small. This 50-channel GPS module has an antenna on board and connects to your system via TTL serial.
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PRT-09194 Jumper Wires Premium 6" Mixed Pack of 100
PRT-09194 Jumper Wires Premium 6" Mixed Pack of 100
US$34.93
This is a bulk package of one hundred 6 inch single female to female and male to male jumper wire sets for prototyping wire connections. Comes as 1 package of one hundred jumpers (colors shown), 50 pieces male-to-male and 50 pieces female-to-female.
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SEN-13285 PIR Motion Sensor (JST)
US$14.64
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. This unit works great from 5 to 12V. You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V.
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DEV-13343 LilyPad Reed Switch
US$6.52
The LilyPad Reed Switch is a simple breakout for a reed switch that will make it easy to use in e-textiles circuits in exactly the same manner that you can currently use the LilyPad Button and Switch. In order to make it more durable for wearable use, we’ve used a different style of reed switch, which is insulated.
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PRT-10474 XT60 Connectors - Male/Female Pair
PRT-10474 XT60 Connectors - Male/Female Pair
US$2.45
These connectors are made from high-temp nylon with gold-plated spring pins or sockets molded in. The shape of the XT60 prevents reverse polarity, and when plugged in the connection is super-solid. Perfect for applications up to and beyond 65A continuous draw. Sold in pairs of 1 male and 1 female connector.
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DEV-10705 myDAQ Protoboard Kit
DEV-10705 myDAQ Protoboard Kit
US$41.93
This kit is designed to connect directly to the National Instruments myDAQ measurement and control tool. The board consists of a prototyping space with GND and 5V rails as well as each I/O line from the myDAQ broken out to standard 0.1" pitched headers.
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SEN-08685 Flexiforce Pressure Sensor - 100 lbs
SEN-08685 Flexiforce Pressure Sensor - 100 lbs
US$35.78
The harder you press, the lower the sensor's resistance. Pressing hard, the resistance changes from infinite to ~300k. The sensor itself is thin and flexible, but the resistance does not change while being flexed. Resistance changes only when pressure is applied to the round area at the end of the sensor.
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KIT-13815 Beefcake Relay Control Kit (Ver. 2.0)
US$14.46
Your 5V system can wield great power with this big, beefy relay board. How does 10A on the NC contacts and 20A on the NO contacts at 220VAC sound? The SparkFun Beefcake Relay Control Kit contains all the parts you need to get your high-power load under control. Only minimal assembly is required! The heart of the board is a sealed, SPDT 20A/10A Relay. The relay is controlled by 5V logic through a transistor, and an LED tells you when the relay is closed.
Delivery within 2-3 weeks
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COM-10002 Black Metal Knob - 14x24mm
COM-10002 Black Metal Knob - 14x24mm
US$2.12
Knobs are a great way to finish off your project and make it easier to adjust the level of your death ray. This knob mates to a 0.25" shaft. The knob slides onto the potentiometer and holds tightly with a strong friction fit. The main body of these knobs is metal with a plastic insert. The outside is knurled for precise adjustment.
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