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2104-ADA 2x8 (16 pin) IDC Breadboard Helper
US$2.53
This is great in conjunction with any 16-pin IDC cables. It comes in two parts, a 'pin-through' socket and a male header. The socket straddles the center of a breadboard or Perma-Proto and then header plugs into the top of the socket.
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494 LoL Shield WHITE - A charlieplexed LED matrix kit for the Arduino - 1.5
494 LoL Shield WHITE - A charlieplexed LED matrix kit for the Arduino - 1.5
US$43.67
The LEDs are individually addressable, so you can use it to display anything in a 9 x 14 grid. Scroll text, play games, display images, or anything else you want to do. This kit you will need to assembled / solder it together.
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2900-ADA FeatherWing OLED - 128x32 OLED Add-on For All Feather Boards
US$26.17
This is the FeatherWing OLED: it adds a 128x32 monochrome OLED plus 3 user buttons to any Feather main board. Using our Feather Stacking Headers or Feather Female Headers you can connect a FeatherWing on top of your Feather board and let the board take flight!
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915-ADA Waterproof Metal On/Off Switch with Blue LED Ring - 16mm Blue On/Off
915-ADA Waterproof Metal On/Off Switch with Blue LED Ring - 16mm Blue On/Off
US$10.42
This button is an on/off switch button, when you press it the 'normally-open' contact shorts to the common contact and the button stays 'pressed'. When you press it a second time, the button springs open, and the contacts open up again. 
Delivery within 2-3 weeks
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1361-ADA Pressure-Sensitive Conductive Sheet (Velostat/Linqstat)
1361-ADA Pressure-Sensitive Conductive Sheet (Velostat/Linqstat)
US$7.91
It's pressure-sensitive: squeezing it will reduce the resistance, so it's handy for making flexible sensors.
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181 Standard LCD 16x2 + extras - white on blue
181 Standard LCD 16x2 + extras - white on blue
US$17.42
Features: 16 characters wide, 2 rows. White text on blue background. Connection port is 0.1" pitch, single row for easy breadboarding and wiring. Pins are documented on the back of the LCD to assist in wiring it up.
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1314-ADA Speaker - 3" Diameter - 4 Ohm 3 Watt
1314-ADA Speaker - 3" Diameter - 4 Ohm 3 Watt
US$3.42
This 3" diameter speaker cone is the perfect addition to any audio project where you need an 4 ohm impedance and 3W or less of power. We particularly like this cone as it has 4 handy mounting tabs 60mm apart.
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2102-ADA 2x5 (10 pin) IDC Breadboard Helper
US$2.02
This is great in conjunction with any of our 10-pin IDC cables. It comes in two parts, a 'pin-through' socket and a male header. The socket straddles the center of a breadboard or Perma-Proto and then header plugs into the top of the socket.
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2190-ADA VERTER 5V USB Buck-Boost - 500mA from 3V-5V / 1000ma from 5V-12V
US$17.42
Convert just about any battery pack to 5V with VERTER - our fresh new Buck-Boost power converter. VERTER can take battery voltages from 3-12VDC and output a nice 5V DC, which makes it a perfect universal power supply for your portable project!
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161-ADA Photo cell (CdS photoresistor)
161-ADA Photo cell (CdS photoresistor)
US$1.75
CdS cells are little light sensors. As the squiggly face is exposed to more light, the resistance goes down. When its light, the resistance is about 5-10KΩ, when dark it goes up to 200KΩ.
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1609-ADA Adafruit Perma-Proto Half-sized Breadboard PCB - Single
1609-ADA Adafruit Perma-Proto Half-sized Breadboard PCB - Single
US$7.23
This proto-board is the PCB you always wish you had, but never realized it! We took the basic layout of a half-sized breadboard and turned that into a beautiful PCB. The top side has a white silkscreen, and the same markings you're familiar with, to make transferring components easy.
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1151 HDMI to VGA Video + Audio Adapter
1151 HDMI to VGA Video + Audio Adapter
US$19.95
This nifty adapter cable has a classic HDMI plug connector at one end and at the other end a DB-15 VGA connector (it has hex nuts that you can remove if you are trying to mate it with a cable that also has hex nuts). There's also an audio jack on the side, this provides stereo headphone out.
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184 Adjustable breadboard power supply kit - v1.0
184 Adjustable breadboard power supply kit - v1.0
US$22.33

This kit is for making your own breadboard-friendly very low dropout adjustable power supply.  A good power supply is essential to electronic projects. While there are many existing designs for adjustable power supplies, this one makes improvements that make it more useful for hobby designs.

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680 Diffused 5mm Fast Flashing RGB LED - 10 pack - Flashing Effect
680 Diffused 5mm Fast Flashing RGB LED - 10 pack - Flashing Effect
US$8.67
When powered, the LEDs perform a flashing effect with all the colors.
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85-ADA Shield Stacking Headers for Arduino (R3 Compatible)
85-ADA Shield Stacking Headers for Arduino (R3 Compatible)
US$3.42
These are standard 6-pin, 8-pin and 10-pin 0.1" spacing female headers...with a twist! The pins are extra long which means you can use these to stack shields!
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