160x128 tft display st7735 quotation

This Bare Basic deals with connecting an Arduino with a breakout, serial SPI interfaced, 160×128 pixel color TFT display with a screen diagonal of 1.8 inch. The controller chip is a ST7735S.

The Sitronics ST7735 is a versatile display controller chip used to drive affordable, Arduino compatible TFT screens with moderate dimensions (1.8 inch display diameter; 160×128 pixels; 16-bit color). Displays with this chip can be applied as output color graphics / text display in an Arduino environment. An interesting library written by Adafruit exits that provides sufficient tools to create colorful, attractive presentation of data.

Once an Arduino has collected and manipulated data, display of the output is obvious. Reporting can be arranged via the Arduino IDE and Serial Monitor, but in this situation the Arduino must be connected to a computer while there is no way to directly produce graphical output. A separate display can be very handy for graphical data display and is especially recommended in standalone applications.

Displays for the Arduino are available in all kinds and price classes. I distinguish three groups: LCD, OLED and TFT. Well known is the monochrome LCD display with a blue or green background, usually with two lines of 16 characters or 4 lines of 20 characters, with each ‘character’ created in its own 8×5 pixel matrix. These LCD displays are good for displaying short messages or numerical values while they lack graphical capabilities and colors. Special LCD displays are the 128×64 monochrome numerical/graphical LCD display whose library offers a few primitive graphics, and the Nokia 5110 84×48 LCD display with a PCD8544 controller. LCD displays do not offer colors other than background versus character.

Figure 1: 1.8 inch 160×128 color TFT display with SPI interface on a breakout board (ST7735 compatible). Left: simple sketch showing text mode; right: graphics test mode.

A special kind of LCD is the OLED display. This family includes small, programmable graphical displays (64×32 or 128×32 pixels) in monochrome or full color.

More versatile than the LCD displays, as well as larger, are TFT displays (fig 1). These are capable of graphics and a spectrum of colors (65,536 up to 256,000 colors) to the degree that they support realistic display of color pictures. TFT displays can be bought in a dazzling array of sizes, resolution, interfaces and prices.

TFT displays for the Arduino microcontroller boards can be accessed via an 8-bit parallel data interface – fast but consuming at least 8 pins of the Arduino. An alternative is the serial SPI interface which needs only five pins.

Figure 2: Wiring of the 160×128 SPI 1.8 inch color TFT display. Note that more expensive displays have a voltage level shifter on board. This makes it possible to connect VCC with 5V instead of 3.3V as in this clone situation.

Here is a no-frills sketch that does what is needed; display some message on the display, with some color and two graphic element (one visible: the frame rectangles and one invisible: the rectangles filled with the same color as the background used to wipe out text).

ST7735 controller based TFT displays are very handy displays for use in Arduino applications. One typical application is a standalone weather station built around an Arduino platform and decorated with temperature, humidity and barometric pressure sensors. The ST7735 is less sophisticated as the bigger parallel TFT screens but displays based on this chip form a nice intermediate between the ‘big’ TFTs and the basic LCD displays.

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.

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.

testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ", ST7735_WHITE);

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.

The ST7735 is the display pixel driver chip and has no backlight control built in. The white LEDs are an independant electrical circuit, some displays sometimes come with a transistor to turn on/off the LEDs, others need to have VCC (3.3V or 5V) connected to the pin as a digital I/O pin would be overloaded. Check your display has a transistor, typically this is visible on the back of the board. The backlight LEDs have no function other that to shine through the LCD panel so you can see the pixels.

TTGO produce quite a few display boards, it is not clear which one you are referring to. Some have a backlight control pin, others do not. Check the vendors web page for the technical details and features.

Font 7 emulates a 7 segment display and the character spacing associated with that type of display. Incidentally monspaced fonts for digits are an advantage, otherwise the digit positions change with the value displayed and this "jiggling" is visually bad.

A wide variety of tft lcd 1.77 inch options are available to you, You can also choose from original manufacturer, tft lcd 1.77 inch,As well as from tft, ips, and standard.

I have worked around my issue with the display in a fashion that I didn"t think possible with my lack of knowledge. So, the following is for people who experience the same problem or are just interested in the matter (conclusion at the bottom):

After searching for many, many different ways of describing my problem on Google, I came across this page on the Arduino forums of someone who had a completely different issue. However, Google found some text embedded in some code posted on that particular page (1.8" 128x160 SPI TFT LCD Display white screen - Displays - Arduino Forum), which had nothing to do with that problem, but was helpful for me:

Now I don"t have this particular display, but the description of the problem showed similarities to mine. And there was some sort of solution there as well. However, being the n00b I am, I understood next to nothing. I did give me the insight though, that I should try to make a workaround within the libraries that I will use in my programs. This way, I don"t have to add extra code within the programs to shift the dimensions, and I can also download other programs and run them just fine with my altered libraries.

To make sure my display wasn"t actually defect, I first looked for the option to broaden the resolution specifications, so I could see the pixels work. Instead of the usual 160x128 resolution, I compensated for the deviation with a resolution of 161x130: now all the pixels lit up as they should: no defect.

The problem wasn"t actually a problem within the files, so I suspect that there is indeed an alignment issue with my display. But I found the code within it, which I changed so that the starting point of the drawing shifted. After looking through all the libraries within the TFT folder (meaning: the TFT library, AdafruitGFX library and Adafruit ST7735 library) and trying to understand as much as I could, I found the location: within the Adafruit_ST7735.cpp file, there is code of the "Adafruit_ST7735::commonInit(...)" function. This function defines the value of "colstart" and "rowstart" as 0. I changed it to correspond with my deviation.

A TFT display resolution can be configured within Adafruit_ST7735.cpp within the Gcmd[] array within the Adafruit_ST7735::writecommand(...) function. The other arrays in that function can also be configured, but TFT.cpp specifically states that a TFT display is configured according to the Gcmd[] array. I don"t remember if it is necessary, or if I just added the following because I changed, tried and errored so much, but I also added the corresponding values to the "_width" and "_height" within the TFT.cpp file.

The origin of a TFT display can be configured within Adafruit_ST7735.cpp within the "Adafruit_ST7735::commonInit(...)" function. Changing the values of "colstart" and "rowstart" will change the row and column of the origin. By standard, they are both defined as 0 (-> colstart = rowstart = 0;), but writing them as two different definitions makes it possible to set a virtual origin, relative to the misaligned origin of the display.

The TFT isn’t ‘plug & play’ with the Raspberry, a patch has to be applied to the kernel to be able to interface via SPI with the ST7735R controller chip on the TFT. Once working, the display will act as a framebuffer device.

-Get Kamal’s source which has the patch for ST7735R controller and the branch for the kernel that is used in 2013-02-09-wheezy-raspbian, which is 3.6.y;

If you are planning on displaying the console on the TFT, then enabling these options in .config will allow you to change the font size and rotate the display later on.

If you build the st7735 driver pair as built-in, add these options to the end of the line in /boot/cmdline.txt. This will display the console on the TFT.

The 1.8" display has 128x160 color pixels. The TFT driver (ST7735) can display full 18-bit color. The breakout has the TFT display soldered on (it uses a delicate flex-circuit connector)

In the above example, Node32-Lite and this 1.8-inch LCD.  Please refer to the tutorial here: ST7735S interfacing with ESP32 to make the connections, Arduino library installation, and modification needed for it to works on this LCD.

Add some dazzle to your project with this 1.45" diagonal graphic TFT display module. This small display packs 128x128 full-color pixels into one square inch of active display area. It is a great choice when you need color and sharp detail while using minimal front panel space. At less than 5 grams, the display adds very little weight to handheld devices.

Thanks to the integrated Sitronix ST7735S or compatible controller, a single 3.3v source powers everything. The SPI host interface allows full read and write control of the display while using only 10 pins. The single bright white LED backlight has anode (A,+) and cathode (K, -) pins brought out on the Flexible Printed Circuit (FPC) tail. To connect, all you need is a standard 10-conductor, 0.5 mm ZIF socket such as Omron Electronics

While the SPI interface requires only a few lines to control this TFT LCD module, it is still possible to transfer data at a rate that supports 20 FPS (Frames Per Second) screen updates -- fast enough to play a full-motion video as shown in our videos.

To get started, download the datasheet and SPI sample code. And of course Crystalfontz is always here to help you when you integrate this display into your application.