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KID7404 5mm IR Photo-Detector – Water Clear Lens
US$1.05
This device is 5mm Infrared photodetector with water clear lens.
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RGB backlight positive LCD 16x2 + extras - black on RGB
US$19.89
This is a fancy upgrade to standard 16x2 LCDs, instead of just having blue and white, or red and black, this LCD has black characters on a full color RGB-backlight background! That means you can change the background color to anything you want - red, green, blue, pink, white, purple yellow, teal, salmon, chartreuse, or just leave it off for a neutral background.
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LED-RING-8 8 RGB Rainbow LED Ring
US$6.99
8 RGB Rainbow LED Ring  is a kind of LED rings with 8 ultra bright RGB LED beads placed on a circle panel. This circle has 1.25" (32mm) outer diameter and 0.62" (16mm) inner diameter. The ring is chainable. On the circle panel, you can see one output pin of a bead connected to an input pin of another bead. With the only one built-in microcontroller pin, you can use an outer device to control this LED ring. Every bead on the circle panel is addressable for it has internal driver chip. You can design a program to control these LED beads and make them illuminate with different colors. Because of each LED bead has about 18mA constant current drive, so the brightness of each bead will keep the same. Even if the voltage changes, you don't have to add any external choke resistors. To make the ring start to work properly, you have to power up it with 5V DC ( or within 4-7V range).
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2088-ADA Adafruit 1.44" Color TFT LCD Display with MicroSD Card breakout - ST7735R
US$23.03
This lovely little display breakout is the best way to add a small, colorful and bright display to any project. Since the display uses 4-wire SPI to communicate and has its own pixel-addressable frame buffer, it can be used with every kind of microcontroller. Even a very small one with low memory and few pins available! The 1.44" display has 128x128 color pixels. Unlike the low cost "Nokia 6110" and similar LCD displays, which are CSTN type and thus have poor color and slow refresh, this display is a true TFT! The TFT driver (ST7735R) can display full 16-bit color using our library code. The breakout has the TFT display soldered on (it uses a delicate flex-circuit connector) as well as a ultra-low-dropout 3.3V regulator and a 3/5V level shifter so you can use it with 3.3V or 5V power and logic. We also had a little space so we placed a microSD card holder so you can easily load full color bitmaps from a FAT16/FAT32 formatted microSD card.
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ARD-LCD-1.8 1.8 inch Color TFT LCD Display for 3.3v Logic Microcontroller with SD card
US$18.15
An 1.8 inch TFT LCD that is super useful for small project designs and gives a very sharp/nice picture quality which works amazing well with 3.3v logic level microcontrollers. It is possible to interface with 5v Logic Arduino Microcontrollers by using 1k resistor on the Data Lines or a Level Shifter. Unfortunately this display is not a touchscreen display, however it makes it up with the included SD Card Slot, Not Micro which you finally have a reason to use your SD Card adapters or SD Cards. Soldering not required to get the display to work, but requires some soldering for the SD card functionality (4 soldering holes on the other side).
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LCD-12864-B ABS plastic 12864 LCD CASE
US$3.49
This is a case that mounts on top of the 12864 LCD screen. It is made out of ABS plastic and has a matt finish to it.
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3DU33 5mm 3DU33 silicon phototransistor
US$1.19
Specification: Material: Silicon. Reverse Breakdown Voltage: 15 VDC. Maximum Working Voltage: 10 VDC. Dark Current: 0.3 μA. Light Current: 0.5 – 1 mA.
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22HST-4C-1M 22AWG 4 Conductor Stranded Hook Up Cable
US$1.39
This handy 22AWG 4 conductor stranded wire cable is ideal for hooking up multiple connections at a time. Perfect for connecting LED light strips to a controller.  Can be separated into 2 or 3 wire cable easily and used as a universal hook up wire supply. Available in continuous length up to 25 meters long.
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ILQ2 NPN Phototransistor Quad Channel DIP16
US$3.21
The ILQ2 is a silicon NPN phototransistor. Signal information, including a DC level, can be transmitted by the device while maintaining a high degree of electrical isolation between input and output. The ILQ74 is especially for driving medium-speed logic, where it may be used to eliminate troublesome ground loop and noise problems.
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ILQ74 NPN Phototransistor Quad Channel DIP16
US$2.70
The ILQ74 is a silicon NPN phototransistor. Signal information, including a DC level, can be transmitted by the device while maintaining a high degree of electrical isolation between input and output. The ILQ74 is especially for driving medium-speed logic, where it may be used to eliminate troublesome ground loop and noise problems.
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LED-155 4 WS2812 5050 RGB Programmable LED Driver Development Board
US$2.79
This small square shaped LED driver board is based on the WS2812 LEDs that operate at 5VDC and are addressable. Thanks to the small footprint, you can use this board for any applications that has a space constraint. The LEDs are addressable so you can wire a bunch of them provided you are supplying enough current to make a daisy chain. Each board will contain four WS2812 LEDS on board and a small hole in the middle for M3 screw mounting.
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ARD-5050 8 5050 SMT RGB LED Array Breakout Board
US$7.69
This module is ideally suited to adding a slightly different light display to your project. This module lets you control 8 ultra-bright RGB LEDs to display your information in a bold and bright way, taking your project to new light levels. The LEDs operate at 5v as they are based on the WS2812. Each LED is individually addressable to provide red, blue, green and any combination of them. Unfortunately a printing error in the silkscreen on the module has led to the GND being labelled as VCC.
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HCPL-2530 IC, Optocoupler, 2 Channel, DIP-8, 50 mA, 2.5 kV, 7%
US$2.31
An improved package allows superior insulation permitting a 480V working voltage compared to industry standard of 220V.
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HCPL-2531 IC, Optocoupler, 2 Channel, DIP-8, 50 mA, 2.5 kV, 19%
US$2.56
An improved package allows superior insulation permitting a 480V working voltage compared to industry standard of 220V.
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HCPL-273D IC, Optocoupler, 2 Channels, DIP-8, 20 mA, 3.7 kV, 300%
US$2.83
This device is a 2 channel optocoupler in a dip-8 package.
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