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Hi guys, welcome to today’s tutorial. Today, we will look on how to use the 1.8″ ST7735  colored TFT display with Arduino. The past few tutorials have been focused on how to use the Nokia 5110 LCD display extensively but there will be a time when we will need to use a colored display or something bigger with additional features, that’s where the 1.8″ ST7735 TFT display comes in.

The ST7735 TFT display is a 1.8″ display with a resolution of 128×160 pixels and can display a wide range of colors ( full 18-bit color, 262,144 shades!). The display uses the SPI protocol for communication and has its own pixel-addressable frame buffer which means it can be used with all kinds of microcontroller and you only need 4 i/o pins. To complement the display, it also comes with an SD card slot on which colored bitmaps can be loaded and easily displayed on the screen.

The schematics for this project is fairly easy as the only thing we will be connecting to the Arduino is the display. Connect the display to the Arduino as shown in the schematics below.

Due to variation in display pin out from different manufacturers and for clarity, the pin connection between the Arduino and the TFT display is mapped out below:

We will use two libraries from Adafruit to help us easily communicate with the LCD. The libraries include the Adafruit GFX library which can be downloaded here and the Adafruit ST7735 Library which can be downloaded here.

We will use two example sketches to demonstrate the use of the ST7735 TFT display. The first example is the lightweight TFT Display text example sketch from the Adafruit TFT examples. It can be accessed by going to examples -> TFT -> Arduino -> TFTDisplaytext. This example displays the analog value of pin A0 on the display. It is one of the easiest examples that can be used to demonstrate the ability of this display.

The second example is the graphics test example from the more capable and heavier Adafruit ST7735 Arduino library. I will explain this particular example as it features the use of the display for diverse purposes including the display of text and “animated” graphics. With the Adafruit ST7735 library installed, this example can be accessed by going to examples -> Adafruit ST7735 library -> graphics test.

The first thing, as usual, is to include the libraries to be used after which we declare the pins on the Arduino to which our LCD pins are connected to. We also make a slight change to the code setting reset pin as pin 8 and DC pin as pin 9 to match our schematics.

Next, we create an object of the library with the pins to which the LCD is connected on the Arduino as parameters. There are two options for this, feel free to choose the most preferred.

Next, we move to the void setup function where we initialize the screen and call different test functions to display certain texts or images.  These functions can be edited to display what you want based on your project needs.

All the functions called under the void setup function, perform different functions, some draw lines, some, boxes and text with different font, color and size and they can all be edited to do what your project needs.

Uploading the code to the Arduino board brings a flash of different shapes and text with different colors on the display. I captured one and its shown in the image below.

That’s it for this tutorial guys, what interesting thing are you going to build with this display? Let’s get the conversation started. Feel free to reach me via the comment section if you have any questions as regards this project.

As an option, you can order this TFT pre-assembled onto a breakout/carrier board. The board allows easy prototyping through its 0.1" headers. You can also include the carrier board in your end product to simplify construction and assembly.

This development kit includes everything needed to get started with the 3.5" EVE module: a 320x240 display mounted on an EVE2 graphically accelerated PCBA, a Seeeduino, an EVE breakout board, jumper wires, USB cable and a ribbon cable. We even assemble this kit and pre-load some demonstration software so that you can have a functioning module in your hands within seconds.

Because the display module includes an EVE (embedded video engine) chip, it"s a perfect choice for an HMI. EVE is a graphics controller solution that can control both display and audio operations. Additionally, Bridgetek/FTDI supports the EVE chip with graphical design toolchains to aid in development.

This kit consists of a CFAF320240F-035T a 320x240 3.5" Full Color TFT LCD module mounted on a carrier board (CFA-10074). The carrier board supports a current driver for the LED backlight of the display.

This TFT LCD display module is perfect for the designer who"s looking to have a graphic and audio processor already embedded in the display unit. Powered by an FTDI/BridgeTek FT810 Embedded Video Engine (EVE) graphics accelerator chip, simply send over a few commands via SPI or I2C and the EVE will put your stored image up on the display. Need to draw a line, create dials/knobs/buttons, or rotate an image? Send a handful of bytes and the EVE will take care of it.

Outlined in this section are TFT LCD (Thin Film Transistor Liquid Crystal Display) basic knowledge, including structures, driving methods (Passive Matrix / PMLCD, Active Matrix / AMLCD) and comparison, RGB filters, display mode, generations and production process.

As our society progresses into an overwhelmingly technological state, screens seem to pop up almost everywhere. Behind those glass displays, or flat panel displays, lie hundreds of thousands of complex, tiny devices, controlling the pixels that comprise the overall image we see. Those devices are known as Thin Film Transistors, or abbreviated, TFTs.

A TFT LCD,  or a thin film transistor liquid crystal display, is one of the fastest growing forms of display technology today. The thin film transistor (TFT) is a type of semiconductor device used in display technology to enhance efficiency, compactness, and cost of the product.

LCD has a genetic disadvantage compared to other display technologies: Narrow Viewing Angles.  For the last 40 years, scientists and engineers put a lot of effort to improve LCD viewing angles and made great progress. In this section we will introduce O-Film TFT, MVA (Multi-domain Vertical Alignment) TFT, IPS (In Plane Switching)and AFFS (Advanced Fringe Field Switching) TFT.

Most of TFT LCDs are hard to read under the sunlight. Orient Display offer Sunlight Readable TFT with these approaches: Transflective TFT, Surface Treatment, Optical Bonding.

Orient Display’s Electro-Optical Characteristics contains sections of Optical Measurement System, Viewing Angle Range & Measurement System, Contrast Ratio and Response Time.

This item doesn"t work. I received it, plugged it in, and it won"t display a signal for anything that I plug into it. The little manual doesn"t seem to match the product, since the manual gives a different description than the actual device. This wouldn"t be a problem, since it appears to have basic controls. However, it just doesn"t work.

I"ll contact the seller via Amazon. However, I"m already irritated that I bought an expensive device that simply doesn"t work. No matter what I do, it simply displays a blue screen which says "no signal". This is independent of any device that I plug into it, or any setting I try. Buy at your own risk.

With the integration of Bridgetek’s next generation EVE3 BT815/BT816 Embedded Video Engine IC, Matrix Orbital EVE3 SPI TFT"s deliver clean, crisp, full color TFT screens for interactive menus, graphing, graphics and even video..

CategorySub CategoryFile NameRevisionSizeDescriptionNotesFeaturesChange LogCategorySub CategoryFile NameRevisionSizeDescriptionNotesFeaturesChange LogEVE3 DisplayEVE3x-391.11.73MiBEVE3x-39A/G Manual

FocusLCDs.com sent me a free sample of a 4x3” TFT LCD (P/N: E43RG34827LW2M300-R) to try out. This is a color active matrix TFT (Thin Film Transistor) LCD (liquid crystal display) that uses amorphous silicon TFT as a switching device. This model is composed of a Transmissive type TFT-LCD Panel, driver circuit, backlight unit. The resolution of a 4.3” TFT-LCD contains 480x272 pixels, and can display up to 16.7M colors.

For this project, you would need the RA8875 driver board (available at AdaFruit for US$35) to interface the TFT display to the Arduino. It comes with a header which you can solder on as needed.