Opto/Illumination

US$7.95
This device is a NPN silicon phototransistor in a TO-18 format 940 nm.
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US$19.95
This is a basic 20 character by 4 line display. Utilizes the extremely common KS0073 parallel interface chipset. However, this LCD has IIC/I2C/TWI/SPI Serial Interface. As the pin resources of Arduino controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card, for example. However, with this I2C interface module, you will be able to realize data display via only 2 wires (in addition to the Vcc and GND). If you already has I2C devices in your project, this LCD module actually cost no more resources at all and runs on 5VDC. It is fantastic for Arduino based project. The backlight and contrast are adjusted by a potentiometer on the back of the LCD module. I2C Address: 0X20-0X27 (the original address is 0X27, you can change it yourself).
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US$2.28
This is a screw base lamp holder with red and black binding posts for wire connections. Perfect for the basic battery circuit and lamp experiment. Works with the 3.7V LAMP-BLB from Abra.
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US$0.97
This is an attractive stainless steel panel mount LED holder that can accept 5mm LEDs.
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US$1.53
This is a socket that a 11-30X series bulb can be screwed and held inside securely. The plastic cover makes it ideal for easy screw in and out without the need to solder the cables and risking damaging the bulb. The included cable is 120 mm long for easy wiring management.
Delivery within 2-3 weeks
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US$0.81
This is a 6VDC 500mA light bulb that can be used in DIY kits such as Christmas trees, RC cars lights, custom made light matrix, etc..
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US$0.74
This is a 3.8VDC 300mA light bulb that can be used in DIY kits such as Christmas trees, RC cars lights, custom made light matrix, etc..
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US$1.78
This neat little device is powered with three included LR41 batteries that allow an LED to light up in three colour modes; white, red, blue and green. A switch exists on the bottom side of the device to turn the LED On and Off. Sold by the unit.
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US$0.55
These 10mm LEDs have translucent milky-white diffused lenses for high visibility at wide viewing angles.  They appear milky white when not powered, green when powered.  Excellent for indoor data display, and any time that you need a big, bright, and friendly green LED.
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US$12.25
Designed specifically for wearables, these updated Flora NeoPixels have ultra-cool technology: these ultra-bright LEDs have a constant-current driver cooked right into the LED package! The pixels are chainable - so you only need 1 pin/wire to control as many LEDs as you like. They're easy to sew, and the chainable design means no crossed threads. This is the second version of the Flora NeoPixels, which runs at at 'high speed' 800KHz communication. Unfortunately they are not back-compatible with the chip-on-back 'low speed' (400KHz) Flora NeoPixels.
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US$6.09
Simply connect 3 to 6VDC to the + pin and ground to the - pin, and the LED on the board will light up. You can make the LEDs fade and twinkle by using the PWM (a.k.a. analogWrite) functionality of your Gemma or Flora, or just connect directly to a digital I/O pin of a microcontroller to turn on and off. Or even skip the micro altogether, and power directly from a LiPoly or coin battery.
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US$1.05
This device is 5mm Infrared photodetector with water clear lens.
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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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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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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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