wemos tft display in stock
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This 2.4" touchscreen with 320X240 pixels communicates over the SPI protocol. The screen can be connected to the Wemos D1 Mini in 3 ways (see images).
TFT 2.4" Touch screen V1.0.0 for LOLIN (WEMOS) D1 Mini - 320X240 - SPI Click a star to leave your reviewWorst experience possibleA bad experienceA moderate experienceA satisfied experienceA very positive experience
Warning:Some people wronlgy report that VCC of this display need to be linked to 5V pin. Remember to connect both VCC and BLK to 3V3 Pin of WeMos D1-R2.
Adafruit GFX Library, as described in the documentation this is the ‘core’ class that all our other graphics libraries derive from. Install this library in addition to the display library for your hardware. In the code you will include it as “Adafruit_GFX“
Adafruit ST7735 and ST7789 Library that as the name descibes This is a library for the Adafruit ST7735 and ST7789 SPI displays (in the code will be included as Adafruit_ST7789)
The touchscreen is a shield that mounts on arduino, not on Wemos. If you selected Wemos for wifi communications then you"ll have to get both arduino and wemos, and connect them (examples in the forum).
We know the display will work when stacked onto an MHT-Live ESP32 but as delivered that shield (TFT plus I2C) has no connection for example between TFT_RST and either D1, D3 or D4, you have to choose, similarly for CD and LED. To help clarify, check it out with a DVM where e.g. RST is going, there are solder pads on the rear to choose with a solder bridge.
The ESP8266 is a well performing microcontroller chip that is fully Arduino compatible. Its WiFi capability makes boards with this chip easy implementable as IOT devices. Here we wire two representative ESP8266 boards: NodeMCU and Wemos D1 mini to a single-row 14-pin header, 320*240 TFT display that uses the four-wire SPI interface.
Here we connect a 320240 ILI9341 TFT display that has a SPI pin-out. This breakout board has 3.3V controller logic while power supply and background illumination operate on either 3.3V and 5V. ESP8266 microcontroller boards support displays with up to 320480 pixels
The display shown in figure 1 has a touch screen. It has a single row of 14 pins (figure 1; see also figure 3). The pins supporting ‘touch’ as well as those associated with the SD card reader are not connected: we concentrate on displaying text, variables, graphics and fast sequences of memory-loaded bitmaps (‘image frames”). The ILI9341 controller is fast and, in combination with an ESP8266, performs excellently.
The sketch uses the “Adafruit_GFX.h” and “Adafruit_ILI9341.h” libraries. This requires a constructor with defined CS, RST and DC pins. The ‘Clock’ (SCK) pin of the display is connected to pin D5 and the ‘DATA’ (MOSI) pin is wired to pin D7.
Figure 3 shows a Wemos D1 mini board mounted on a prototyping breadboard together with a 2.8 inch ILI9341 SPI TFT display according to the wiring diagram shown in Figure 2. The ESP8266 is running a demo adapted for the “Adafruit_GFX.h” and “Adafruit_ILI9341.h” libraries from Bodmer’s ‘Clock’ example for his TFT_eSPI library.
— ESP8266_ILI9341_Adafruit_Bodmers_clock.ino, a real time analog clock example adapted from Bodmer’s TFT_eSPi library examples (display visible in figure 3).
ILI9341 is a 262,144-color single-chip SOC driver for a-TFT liquid crystal display with resolution of 240RGBx320 dots, comprising a 720-channel source driver, a 320-channel gate driver, 172,800 bytes GRAM for graphic display data of 240RGBx320 dots, and power supply circuit. ILI9341 supports parallel 8-/9-/16-/18-bit data bus MCU interface, 6-/16-/18-bit data bus RGB interface and 3-/4-line serial peripheral interface (SPI). The moving picture area can be specified in internal GRAM by window address function. The specified window area can be updated selectively, so that moving picture can be displayed simultaneously independent of still picture area.
You can find ILI9341-based TFT displays in various sizes on eBay and Aliexpress. The one I chose for this tutorial is 2.2″ length along the diagonal, 240×320 pixels resolution, supports SPI interface, and can be purchased for less than $10.
Note that we will be using the hardware SPI module of the ESP8266 to drive the TFT LCD. The SPI communication pins are multiplexed with I/O pins D5 (SCK), D6 (MISO), and D7 (MOSI). The chip select (CS) and Data/Command (DC) signal lines are configurable through software.
For ILI9341-based TFT displays, there are some options for choosing the library for your application. The most common one is using Bodmer. We will use this library in this tutorial. So go ahead and download the
Configuration of the library font selections, pins used to interface with the TFT and other features is made by editting the User_Setup.h file in the library folder. Fonts and features can easily be disabled by commenting out lines.
Now you are all set to try out tons of really cool built-in examples that come with the library. The following output corresponds to the TFT_Pie_Chart example.
My favorite example is TFT terminal, which implements a simple “Arduino IDE Serial Monitor” like serial receive terminal for monitoring debugging messages from another Arduino or ESP8266 board.
In this tutorial, we are going to launch a kind of TFT LCD with St7789 driver, as a result of which we will be able to show an interesting animation that simulates the function of the human eye. Of course, I will teach you how to change the type of eye animation. In this project, we will use the Wemos board with ESP8266 chip to set up the TFT display, the used TFT display with dimensions of 240 x 240, which due to its full color, contributes a lot to the beauty of the project. We will use the TFT-eSPI library to set up and display graphic items, but we will also make changes to the library to make it suitable for ESP8266 use. VisitCiferTechfor more tutorials, and be sure to follow myInstagrampage to support me. ^-^
In the human eye project, we use TFT LCD, which stands for “Thin Film Transistor”. The color TFT LCD display has transistors made of amorphous silicon thin films deposited on the glass. It acts as a control valve to generate the proper voltage on the liquid crystals for separate sub-pixels. For this reason, the TFT LCD screen is also called the Active Matrix display. The 1.54-inch display has 240×240 pixels, 16-bit full color, and an IPS display, so the color looks great up to 80 degrees from the axis in any direction. This LCD uses the ST7789 driver.
In this project, we use the TFT-eSPI library to set up the monitor. However, in order to be able to connect the monitor to the ESP8266 board, we must make changes in the library by replacing one of the files in the main folder. In this step, follow the steps below for the initial installation of the library. First, we install the TFT-eSPI sensor reference library in Arduino IDE software. Follow these steps:Follow this path Sketch> Include Library> Manage LibrariesSearch for the word TFT-eSPI.Install the library.
In this project, we used a TFT LCD or SPI communication protocol that will use pins D0, D1, D5, D7 on the Wemos board, we will also use a light-dependent resistor whose values are determined by analog to digital pins A0 is measured. Make the connections according to the table and schematic below.
Up to this point, we have been able to capture the animation of the eye on the screen. When the light is low, the pupil opens and the pupil becomes smaller when a lot of light is detected. In this added circuit we used two types of resistors, one is a normal resistor and the other is a light dependent resistor or LDR that will be connected to pin A0 on the Wemos board.
Let"s see how todisplay notificationsfrom asmartphoneandour screen.While this is a useful and fun feature,keep in mind, you will give access to your notifications to two services on the internet. Even if the communication is theorically secure,it isn"t great for your privacy.Create an account on IFTTT (https://ifttt.com/)
I like to be able to write my name (which is Rémi), but I didn"t find an easy way to add a font that display accented characters, so I had to generate it from attf font file.
If you want to make it your self then Let’s start the tutorial, So you can make it in an easy way with an ESP8266, TFT display, and other few components.