Opto/Illumination

US$4.32
A useful device to have for reducing cabling on multiple LCDs. This device converts the Serial communication into I2C, meaning this will result in only four cables being used! Comes with a potentiometer on the back for adjusting contrast when needed. Specs: Compatible for 1602 LCD. Supply voltage: 5V. Weight: 5g. Size: 5.5 x 2.3 x 1.4cm.
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US$18.13
This is a 16 column by 4 row LCD Display with yellow colored text and a blue backlight. The connection pins on the top are the standard connections for serial communication with standard Arduino microcontrollers. There are 16 pins for the connection port, requires a potentiometer to control contrast or a i2c backpack. Works with the standard Arduino liquid crystal library, easy to interface for any projects you may have in mind!
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US$2.19
A simple red laser breakout board makes it easy to interface with any microcontroller that supplies 5v for logic and voltage. This unit has three pins and two markings to indicate the pinouts. The first marking is S for signal, followed by the second pin for voltage and the third pin with the marking – for GND.
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US$70.48
This is a strip of WS2812b LEDs that are individually addressed to make light patterns. They require a controller like the Arduino to drive them and won’t light up if you just power them. They’re driven from 5V power instead of the usual 12V for non-addressable RGB strips, and will burn up if given more than 6V.
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US$4.65
There are three ways of identifying the polarity of an LED. The first method is look at the cap, the cut end is noted as negative or cathode. The second method is the Leads, the longest pin is considered the positive or anode. The third method is looking inside the cap to find the biggest trace, that is considered the cathode or negative end. Manufacturing mistakes happen from time to time, the LEDs are 5mm in RED and have the first method; cut off on the wrong end. Other than that this unit functions perfectly fine!
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US$25.19
This 3.5 inch TFT LCD is based on the ILI9481 LCD driver and gives a very sharp/nice picture quality and works amazing well with Arduino Uno and Arduino Mega Microcontrollers. Unfortunately this display is not a touchscreen display, however it makes it up with the included MicroSD Card Slot. No soldering, no wiring, no fuss just plug and play!
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US$9.73
This unit has 16 pinouts that require a breadboard to interface with any microcontroller you may have at hand. You also need a 10k potentiometer to adjust the contrast value to reduce the backlight and view the text. This display can show up to 16 columns and 2 rows of text. The back light for this model is green/yellow.
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US$12.53
Typically this unit has 16 pinouts that requires a breadboard to interface with any microcontroller and a 10k potentiometer to adjust the contrast value to reduce the backlight and view the text. However with the addition of the I2C Backpack pre-soldered you only need to connect four pins to your microcontroller. You do not need to worry about the 16 pin cables that need to be connected and the unit comes with a potentiometer to adjust the Contrast. You also have a jumper for two pins to enable or disable brightness.
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US$6.99
This device is a slim chip that allows users to connect their RGBW or RGB LED strips to an IR Controller, it simplifies the process of connecting your LED Strip to a 12v 1.5 Amp adapter. This device has 22 keys, 16 are assigned for changing color. Four are assigned for special modulations of how the LED strip should light up and the upper two buttons for the power.   
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US$8.14
This unit has 16 pinouts that require a breadboard to interface with any microcontroller you may have at hand. You also need a 10k potentiometer to adjust the contrast value to reduce the backlight and view the text. This display can show up to 16 columns and 2 rows of text. The back light for this model is blue.
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US$6.99
The 8 SEG LED Board enables you to easily add four 8-segment digits to your device. It is ideal for applications such as displaying the digits and/or time.
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US$27.07
A 2.8 inch 320 x 240 resolution Resistive touch screen. Works with Arduino compatible microcontrollers. Comes with a Micro SD Card interface onboard and is controlled via SPI. Backlight is adjustable via program.
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US$13.99

0.96inch OLED, SPI/I2C interfaces, straight/vertical pinheader.

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US$99.95

Features: 7inch IPS screen, 1024x600 hardware resolution. Capacitive touch control. Supports popular mini PCs such as Raspberry Pi, BB Black, as well as general desktop computers; When works with Raspberry Pi, supports Raspbian/Ubuntu/Kali/Retropie/WIN10 IOT, driver free. When work as a computer monitor, supports Windows 10/8.1/8/7, five-points touch, and driver free. Backlight can be turned off to lower power consumption

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US$72.75
Features: 800×480 high resolution. Resistive touch control. Supports Raspberry Pi. Supports Banana Pi / Banana Pro, comes with Lubuntu, Raspbian images. Supports BB Black, comes with Angstrom image. For other mini-PCs, driver is required and should be developed by users. Not only for mini-PCs, it can work as a computer monitor just like any other general HDMI screen. HDMI interface for displaying, USB interface for touch control. Back light control to lower power consumption.
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