bar type lcd display free sample

With its ultra-wide aspect ratio of nearly 4:1, this bar-type display excels in narrow spaces. Use this display as an information panel on an appliance or dashboard. This display can show wide graphics that get squished on other displays or can be broken into sections to take the place of multiple other displays.

The active area of the display is 5.2" on the diagonal and 5" wide. It has an RGB interface, and a white LED backlight. If you"re looking for a smaller version of this display, we also carry a 3.9" bar-type display.

This bar type lcd is ideal for customers who have bars for pubs, restaurants, karaokes, and parties, will still buy the bar type of lcd which for the bar to provide the better customer experience. LED bar type lcd is a good choice for those that bars and pubs, restaurants, karaokes, and hotels. On the other hand, a bar type of lcd display can be used to give the better customer experience.

What is a bar type of lcd, and is the popular choice among smartphone users. Bar type Lcds are one of the most commonly used displays of cell phones, and the bar type of lcd display is no exception. Firstly, barri lcds are one of the most used phones and cell phones.

New bar type lcd choices (e. in the front and center) of the cell phone, an easy-to-use display for a cell phone is easy to display and still have a basic idea of what functions a cell phone may be, of course, is equipped with the right bar type of lcd display for any cellphone. No matter where the phone is going, the bar type of display is easy to find and functions without using the built-in light display. barri lCD choices are small and easy to use, and still allows the user to see all the aspects of the phone without including the lighting it.

This repository contains all the code for interfacing with a 16x2 character I2C liquid-crystal display (LCD). This accompanies my Youtube tutorial: Raspberry Pi - Mini LCD Display Tutorial.

During the installation, pay attention to any messages about python and python3 usage, as they inform which version you should use to interface with the LCD driver. For example:

It is possible to define in CG RAM memory up to 8 custom characters. These characters can be prompted on LCD the same way as any characters from the characters table. Codes for the custom characters are unique and as follows:

For example, the hex code of the symbol ö is 0xEF, and so this symbol could be printed on the second row of the display by using the {0xEF} placeholder, as follows:

This is a demo of a graphical progress bar created with custom characters. This bar could be used, for example, for showing the current level of battery charge.

This is a new Pi Pico display from Waveshare with many more pixels. It is a 2inch LCD display module, designed for Raspberry Pi Pico, with an embedded ST7789VW driver, 65K RGB colours, 320x240 pixels and an SPI interface. A Pi Pico can be plugged into the rear of the screen for very easy connection without any soldering. It sports 4 simple button switches for user input. It is bright, colourful and easy to program. The makers supply an example program (see below), which includes the display driver, making it very easy to get started. The manufacturer"s wiki can be found at:

7) Connect the HDMI interface of the LCD to the HDMI port of Raspberry Pi and then power on the Raspberry Pi, it can display normally after waiting for about a few seconds.

The screen is displayed vertically by default. For convenience, you can adjust the display orientation of the screen, see #Rotation(Working with Raspberry Pi).

After the display is rotated, the position of touch is incorrect because the touch doesn’t change with the display angle. So the touch also needs to be modified.

Note: If you increase the brightness, it may cause the insufficient power of the LCD by getting power through the USB interface. To solve this problem, you can input 5V/2A power through the Power interface on the back of the LCD.

Since the first-generation Raspberry Pi released, Waveshare has been working on designing, developing, and producing various fantastic touch LCDs for the Pi. Unfortunately, there are quite a few pirated/knock-off products in the market. They"re usually some poor copies of our early hardware revisions, and comes with none support service.

At present, many product applications on the market require the use of full-color TFT wide-screen displays (Bar Type TFT). Raystar currently introduces a variety of Bar-Type TFT LCD display modules. 3.9-inch and 5.2-inch TFT modules are currently available at this category, as well as options with control panel. We also provide modules with different interfaces including 8080 / DVI (HDMI CN) / MCU / MPU / RGB. If you need touch solution, we offer capacitive touch panel (PCAP) / resistive touch panel (RTP) / no touch panel TFT. Besides, if you’re looking for stretched bar LCD display with high brightness or high temperature ranges, we have some available standard products that can meet your need.

The first device in the series, the FT800, launched in 2013 and took the titles of British Engineering Excellence ‘Electronic Product of the Year’ and Elektra ‘Digital Semiconductor of the year’, within the same year, where the product was described as providing ‘versatility and innovation’ and ‘the technological capabilities with efficiencies that differentiate it from its competitors’. With its revolutionary EVE technology deploying an object-oriented approach, the series is capable of simplifying the implementation of intelligent displays – reducing bill of material costs, power budget, board space, and development time.

In this article, I will show you how to communicate with a DWIN display using the serial port of a computer. I got the privilege to receive two displays from the manufacturer for a review in exchange for content made about them. I accepted their offer because I have been always interested in human-machine interfaces (HMI) and I could see that I can use their displays in many of my upcoming projects as well as I can upgrade some of my older projects using the displays.

These displays communicate via serial communication through their TX and RX pins. This makes it simple to connect them to microcontrollers without implementing difficult i2c or SPI libraries. Just two wires and the power supply rails (+5 V and GND), that’s all.

The displays are based on the T5L ASIC (application-specific integrated circuit) which is developed in-house by DWIN. It is a dual-core chip: one core handles the OS and the other takes care of the GUI.

The software is created with DWIN’s own developing environment called DGUS. This software creates the binary files for controlling, configuring and handling the display as well as it can communicate with the display via the serial port. The display handles images, fonts, icons and other visual stuff. All these features are compiled into a binary (BIN) file which is uploaded to the display. The uploading of the resources (at least on the displays I have) can be done via an SD card. Certain files can be uploaded via serial connection as well, but generally, the SD card upload method has to be used.

Here I will try to summarize all the information that is needed to understand how to set the display up for a basic operation. I had difficulties understanding the principles of the display when I first looked at it but the more time I spent on trying to understand it the clearer the things became.

Once you installed the driver and unpacked the DGUS tool into a folder, you can start working with the display. Keep in mind that at the end of the process, the config files will need to be copied on an SD card. The SD card has to be formatted in a specific way described by the manufacturer. The display then can read the SD card properly. More on this a bit later below.

After establishing a project you will see a new tab called Touch and display config. This is where we will configure the display. But before that, let’s move back to the Welcome tab and generate the fonts.

Select the #0 word bank generating option from the DGUS config tool’s Welcome tab. This will open a new window called “Font Special Generator”. Here you should select your favourite font, then select the widest possible character (W or M), and adjust the two scales and two shifts to fit the letters on the display properly. Once you are satisfied, click on Create and wait until the process is done. The generated file will be placed in the root folder of your DGUS tool. Go to the root folder of the DGUS tool and copy the freshly created .HZK file into the DWIN_SET folder of your project folder.

Then we start building up the GUI. This display works in an initially unusual way if you are used to the typical WYSWYG editors where you can drag and drop the different controls over a specified area and then configure them. With this type of editor, you have to first draw the controls in an image editing software (Paint, GIMP, Photoshop…etc.), then create areas over the image and assign a certain behaviour to these areas. This was very unusual for me in the beginning but once I understood the principles, it actually all made sense.

This exercise will only have a single page, multiple pages will be shown in future exercises. To create a background file, the image that will be shown on the display, there are a few rules.

If I understood correctly, the display will recognize the different configuration files and their purpose by these two numbers at the beginning of their file name, so it is important to name them properly. Once this is done, we can start filling up our picture in the editor with functionalities such as buttons, sliders, variables, icons, curves and so on.

In this simple demo, I want to show you how we can send some data from the serial port to the display and how we can translate the interaction with the display (e.g. touching it) into a message on the serial port.

To be able to communicate with the display, before doing anything we must understand how the display communicates. As I said, it communicates via serial communication. It uses hexadecimal (HEX) characters to send and receive information. There are two types of operations: reading and writing.

There are two things inside the display that can be manipulated: the description pointers (SP) and the variable pointers (VP). They sound intimidating in the beginning but actually, they are very simple. Both SP and VP are pointing at RAM addresses, each address (for example 0x5000) has two bytes: a high byte and a low byte. The description pointers point at RAM spaces where the properties of a control is stored. These properties are for example the X and Y position of a control element, the colour of it or other properties. So, you can manipulate these things through the serial port by accessing the control through its SP address. The VP addresses point at different variables. For example, you can send a number from the serial port to the display by sending the value to a VP address that is defined for a control. Also, you can read these VP addresses using the serial port and fetch the values. A crucial thing to remember is that you have to carefully select the address of both of these variables. If the addresses are not planned carefully enough, two addresses can overlap and they will cause you trouble.

54 65 73 74 20 74 65 78 74: Data submitted to the display. In this case, this series of HEX values mean “Test text” in ASCII. Therefore in this demo, we will send this to a text variable on the display. [length = 9 bytes]

I felt it simpler the look at the above series of numbers this way:[Header] [Number of bytes] [Command] [VP/SP Address] [Actual data sent to the display]

The header is always the same, whatever you do. The number of bytes is the length of [Command] + [VP/SP Address] + [Actual data sent to the display] in bytes. The command is either read (83) or write (82) because you can either read or write a value. The VP/SP Address is determined by you in the DGUS software and the data you send to the display is also determined by you.

There will be one field on the display that receives the raw output value of an ADC channel of the Arduino microcontroller. In this demo, I will emulate this by manually sending the number to the display via the serial port. This will be the “receiving part” (Serial→ DWIN) in the example. The sending part (DWIN → Serial) will be a slider that can change a value between 0-1000. The value of the slider will be shown on the display as well as it will be sent to the serial port. I also add a button that will turn an LED on and off.

To accommodate the above functions, I drew a very low-budget design image in GIMP. Both the ADC value and the slide value will be displayed in one of those blue areas. The display can print texts, numbers…etc., so all we will need to do is to place the text over the blue areas and then send the values to the corresponding VP addresses. Then we have that green rectangle which will be functioning as the slider. I also drew a small box that will indicate the position of the slider. And the final item will be that big dark orange/brown button with the “LED” text on it. Pressing it will toggle the LED in a future demonstration. I will implement the handing of the button press in Arduino because it is more straightforward for me.

To add a field to the display that shows the value of a variable, go to Display Control and select the “123 Data Variable Display” icon. This will allow you to draw a rectangle anywhere over the display area and this rectangle will give place to the numbers.

A background picture used as the control panel. The blue fields will accommodate numbers printed by the display, the green line will act as a slider and the dark orange/brown button will toggle an LED on or off.

The above exercise has to be completed twice: once for the ADC value and once for the slider value. I selected the “123 Data Variable Display” icon and drew a rectangle over each blue field on the display. These boxes are where the variables will be printed.

The slider variable parameters are shown on the right side of this text block. I already explained all the parameters for the ADC variable and they are almost the same here. Since this is a different value, it needs another address. I put the variable on the 1000 VP address. This means that when the slider is moved, it will have to write its position to the 1000 VP address and we also know that if the display sends something to the serial with the 1000 VP address then it comes from this variable that represents the position of the slider.

Then we add the slider by adding a “Drag Adjustment” control over the green bar on the display. I actually made it a bit narrower than the size of the display.

Once the control is added to the display, we can adjust its settings. Here, I also chose the 1000 VP address. This is very important! Why I did this is because when I move the slider, then the display will put the corresponding value in the 1000 address. Since the slider variable is also tied to this address, it will get this value and it will display it on the display as a human-readable number. Furthermore, you can see that I checked the “Data auto-uploading” checkbox. This means that whenever I interact with the control, the display will send out the value of the variable under the 1000 VP address through its serial connection. So, as I mentioned above, when we see a message from the display coming from the 1000 address, we will know that the value in that message is the position of the slider. The dragging mode does not need any explanation, neither the “start value” nor the “terminated value”. I think that this is a mistranslation, I would call this parameter the final value or max value.

When the button is pressed, the display will send out a message through the serial port whose value is "0001” and which is coming from the 3000 VP address. Therefore, we can prepare our code on the microcontroller to listen to the 3000 VP address and see when the value 0001 is being read from the address. Then we can very easily write a code that toggles an LED when the above message is received by the MCU.

Here comes a little trick that I needed to discover myself because I could not find an explanation for it. So, first I could not get any reply from the display on the serial terminal whenever I interacted with it. If I sent a command to the display and read the VP address manually, I could see that the value of my variable changed in a way I wanted to, but I could not get it to show up automatically on the serial terminal. Despite the fact that the “Data auto-uploading” was checked in!

It turned out that despite the fact that I enabled the “Data auto-uploading” in the editor, it was not enabled globally in the config file of the display. To enable it, go to settings and click on the DGUS icon.

Click on the CFG Edit tab. Then, on the left side, you can see an option called “Touch-sensitive Variable Changes Update”. For some weird reason, this is “Non-auto” by default. Change it to “Auto”. Also, if you are bothered by the beeping sound of the display whenever you touch it, change the “Touch sound” to “Off”. Furthermore, you can play around with the “Power-on Display Direction”. In my case, I left it at “0°” because I use the display in portrait mode in an orientation where the serial connector is at the bottom of the display and the SD card reader is at the top. Otherwise, I would use 90° or 270° depending on how I want to rotate the display in landscape mode. Once you chose the settings you want, click on “New CFG” and save the file named as T5LCFG.CFG in the DWIN_SET folder of your project. Later on, you will have to copy this file onto an SD card, so it is better to keep everything together in the same folder.

But, before doing anything, please DO NOT hot-swap the SD card in the display. First, remove all power (screen is OFF), then plug in the SD card to the slot, and then connect the display to a power source. Otherwise, you might damage the display. Also, you cannot use the display’s SD card slot as a card reader to upload the config files to the display. You will need a separate card reader!

Once all the files are on the SD card under the DWIN_SET folder, put the card into the display while the display is OFF! After the card is inserted, you can connect the display to a power source. If everything is correct, you should see a blue display that is showing you the progress of the uploading from the SD card to the display. It shows you which file is being transferred at the moment and at the end of the process, there will be a message at the top of the screen (2nd line) which says:SD Card Process… END !

Once you see this message, unplug the display from the power source and then remove the SD card. Now, without the SD card in the slot, power up the display again. If you followed my instructions properly, you should see the background picture you have uploaded and you should be able to interact with the display.

From this point, you can upload modified code to the display via USB, but only the files starting with 13, 14 and 22 numbers. I could not find a way to update everything on the display via USB, so if you want to make a change, it is better to stick to the SD card uploading method. The USB connection is used for communicating with the display but not programming it!

We can see the header (5A A5) as usual, then we see that six bytes are the total amount of data (06), a reading (83) was performed, the data comes from the (1000) VP address and it is 1 word long (01), and the returned data is (026D). 026D is a hexadecimal value; converting it to decimal gives us 621 which is the same number we see on the display. Also, to check the length: [83] + [1000] + [01] + [026D] → 1+2+1+2 = 6. We indeed received 6 bytes.

Notice that I had to send the above values as 0x5A 0xA5 0x5 0x82…etc, but that is just because of how RealTerm processes the values. Also notice that I have received data (5A A5 03 82 4F 4B) from the display after sending the command. This is just some sort of "acknowledging” message from the display.

First I had to send the header (5A A5), then I sent the number of bytes (05), then the write command (82), then the VP address (20 00), and then the value (03 DB). 03DB is 987 in decimal which is the same number which showed up on the display after I sent it to the command.

987 decimal is 0x03 0xDB in HEX. Please notice that the text shown in the terminal is the acknowledging message. The value sent to the display is in the center text box.

Initially, it was a bit difficult to understand the principles of these DWIN displays. But after some time, I got the hang of it and I started to understand how to work with the display. They are really cheap but powerful devices and they can serve a lot of projects. In exchange for their extremely good value-to-performance ratio, you pay a bit more in time while learning how to work with these displays.

I have many projects in my head where I can use this display, so I will make a YouTube playlist for my tutorials on these DWIN displays and I will gradually add more and more videos to it.