tft display with esp32 factory

This project uses the SPIFFS (ESP32 flash memory) to store images used as background. You"ll need to upload these to the ESP32 before you upload the sketch to the ESP32. For this you"ll need the ESP32 Sketch Data Upload tool.

You can download this from Github: "https://github.com/me-no-dev/arduino-esp32fs-plugin". Follow the instructions on the Github to install the tool:Download the tool archive from releases page.

Before you upload the data folder to the ESP32, you"ll first have to select the right partitioning scheme.Go to Tools -> Board and select ESP32 Dev Module.

Firstly, depending on the board you are using (with resistive touch, capacitive touch, or no touch) you will have to uncomment the correct one. For example, if you are using the ESP32 TouchDown uncomment: "#define ENABLE_CAP_TOUCH". If you are using a DevKitC with separate TFT, uncomment "#define ENABLE_RES_TOUCH".

You can also set the scale of the y-axis of the graphs. This is done under "// The scale of the Y-axis per graph". If these are to big or to small, the data will not be displayed correctly on the graph. You might have to experiment with these.

Go ahead and upload the Bluetooth-System-Monitor.ino sketch to the ESP32. The settings under tools besides the Partition Scheme can be left to the default (see image). Go to "Sketch" and select "Upload". This may take a while because it is a large sketch.

The TFT display is a kind of LCD that is connected to each pixel using a transistor and it features low current consumption, high-quality, high-resolution and backlight. This 2.8-inch full color LCD has a narrow PCB display. The resolution is 320×280 pixels and it has a four-wire SPI interface and white backlight.

were missing for my display (hailege, 2,8 tft, spi, il9431, https://www.amazon.de/-/en/gp/product/B07YTWRZGR/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1). so it might just be that the led backlight isnt being turned on. but of course the tip might not help with the st7796s.

A beautiful 3.5” touchscreen display, based on ESP32-WROVER, with a built-in 2M pixel OV2640 camera, makes it an ever perfect platform for your ESP32 projects.

Makerfabs ESP32 3.5” Touch with camera is absolutely open for makers, and besides, Makerfabs provide plenty of Demos to help the users on the usage. Have a try at this fantastic display in your next ESP32 project!~

We"ve got a new machine here at Adafruit, it can uncover your deepest desires. Don"t believe me? I"ll turn it on right now to prove it to you! What, you want unlimited mozzarella sticks? OK well, that"s not something we can provide. But we can provide your second-deepest desire: an ESP32-S2 Feather board with a built in IPS TFT color display. It"s got all the gooeyness of a mozzarella stick features of a Feather main board, the comforting warmth of an ESP32-S2 WiFi microcontroller, and the crispness of a 240x135 pixel color TFT display. All that and it will even plug in nicely into a breadboard, terminal block wing, or Feather Doubler or even just stack on top of another wing.

This feather comes with native USB and 4 MB flash + 2 MB of PSRAM, so it is perfect for use with CircuitPython or Arduino with low-cost WiFi. Native USB means it can act like a keyboard or a disk drive. WiFi means its awesome for IoT projects. And Feather means it works with the large community of Feather Wings for expandability.

The ESP32-S2 is a highly-integrated, low-power, 2.4 GHz Wi-Fi System-on-Chip (SoC) solution that now has built-in native USB as well as some other interesting new technologies like Time of Flight distance measurements. With its state-of-the-art power and RF performance, this SoC is an ideal choice for a wide variety of application scenarios relating to the Internet of Things (IoT), wearable electronics, and smart homes.

Please note the Feather ESP32-S2 has a single-core 240 MHz chip, so it won"t be as fast as ESP32"s with dual-core. Also, there is no Bluetooth support. However, we are super excited about the ESP32-S2"s native USB which unlocks a lot of capabilities for advanced interfacing! This ESP32-S2 mini-module we are using on the Feather comes with 4 MB flash and 2 MB PSRAM so you can buffer massive JSON files for parsing!

The color TFT is connected to the SPI pins, and uses additional pins for control that are not exposed to the breakout pads. It"s the same display as you see here, with 240x135 pixels and is IPS so you get bright color at any angle. The backlight is also connected to a separate pin so you can PWM the backlight up and down as desired.

For low power usages, the Feather has a second AP2112 regulator. The regulator is controlled with a GPIO pin on the enable line and can shut off power to the Stemma QT port and TFT. There is also a separate power pin for the NeoPixel that can be used to disable it for even lower quiescent power. With everything off and in deep sleep mode, the TFT feather uses about 100uA of current.

The component TFT supports a 2.8 inch TFT display with a resolution of 240*320 pixels.The display is not soldered on the board, but there is a 14 pin connector for a TFT display. The ILI9341 has been tested.

There are four sample projects for the Arduino IDE which could be downloaded: TFT-Box3D (download here), TFT-Graphic-Test (download here), TFT-HelloWorld (download here) and TFT-HowToUseFonts (download here). And there are two examples for the Arduino IDE for using the touch functionality which could be downloaded: TFT-TouchBtn (download here) and TFT-TouchDraw (download here).

There are two dip switches for the component: SW311 and SW314. If you want to use the TFT display all switches on SW311 have to be on on. If you additonally want to use the touchpad of the display all switch of SW314 have to be on. The following two tables shows the functions and the potential conflicts with other components

There are four sample projects for the Arduino IDE which could be downloaded: TFT-Box3D (download here), TFT-Graphic-Test (download here), TFT-HelloWorld (download here) and TFT-HowToUseFonts (download here).

And there are two examples for the Arduino IDE for using the touch functionality which could be downloaded: TFT-TouchBtn (download here) and TFT-TouchDraw (download here).

A 80*160 pixel color display has the particular advantage that it is small: screen diagonal of 0.96 inch. This makes it attractive for use in (literally) small applications, particularly in scale models: railways, homes, cities. Attached to a ESP8266 and ESP32 microcontroller these displays can produce animations or day/night scenes, illuminated shop windows, traffic boards, advertisement panels and so forth. Here we wire a 0.96’ TFT with ST7735S controller to ESP8266 and ESP32 microcontroller boards

Model railway displays can be made more attractive by the addition of ‘live’ decoration: train station arrival/departure boards, information screens, advertisement boards, etcetera. Another type of decoration is animated shop windows. For this genre of application a miniature display can be an interesting option. All these applications have in common that any display used needs to be small, flat, economical and easy to fit, sometimes as retrofit, into the interior of plastic model structures such as model railway homes and Lego buildings. They even may be placed in structures belonging to model Christmas or Easter villages. The market supplies small monochrome displays, e.g. 0.91 inch diameter, 128*32 pixel OLED, the slightly bigger (0.96 inch), 64*128 pixel OLED, and the recently introduced 0.96’ 160*80 TFT. The OLEDS can be found in different versions (white, blue, yellow monochrome color). Very attractive is the 0.96’ TFT because it is capable of displaying 64k colors. Driven by a powerful ESP8266 or ESP32, animations can be run such as miniature billboards and advertisement boards. Static displays that change between day and night such as shop window illumination, are also among the possibilities. In this article we deal with the connectivity between a 0.96’, 160*80 pixel TFT and ESP8266 or ESP32 microcontroller boards. The TFT’s controller is a ST7735S which is perfectly supprted by Bodmer’s TFT_eSPI library.

Whilst the early ESP8266 development work was done with a configuration consisting of a breadboard with the display on it and with connections through jumper wires such assemblies perform very irregular. The 0.96′ SPI TFT responds very critically to imperfect wiring: one slightly loose jumper wire and the display won’t work. A minibench with soldered pin connectivity was therefore constructed for ESP8266 experiments, designed to support a Wemos D1 mini ESP8266 and a TFT display. The Wemos was selected here because its small footprint makes it easy to hide this microcontroller board inside buildings constructed from Lego blocks. Components of the minibench: a double-sided 60×40 mm soldering prototyping board, three 8-pin headers sockets and wires. The design, wiring scheme and the result are shown in figures 2 and 3.

Connected with an ESP32 the TFT display feels at ease. Maybe this is so because Bodmer’s TFT_eSPI library provides a User_Setup example that did not need tweaking. The display responded immediately, fast and reliable. Hardware SPI pins on the ESP32 are used for clock and data: pin 18 is connected to SCL at the display while pin 23 is connected to SDA of the display (see figure 4). The other pins breathe familiarity as well: RST of the display to D4 of the Wemos, DC to D2 and CS to pin D6. The pin on the display marked BLK remains unconnected; I noted comments on several fora that BLK may be connected to the 3.3V pin, to any pin on the ESP32 that supports pulse width modulation, or that the BLK pin can be set HIGH (backlight ON) or LOW (backlight OFF). The display at hand has no voltage regulator which implies that if one wants to use it with an Arduino Uno the precaution must be followed that control signals to the display run via voltage level conversion.

There are two major libraries supporting ST7735 controller-based TFTs: the Adafruit_GFX.h library and Bodmer’s TFT_eSPI.h library. My experience with the Adafruit_GFX.h library is that although the common graphic functions perform well, support of animations via a series of instructions ‘drawBitmap ()’ is relatively slow. Adafruit_GFX seems to be created for 160*128 displays. The library does not support the instruction ‘pushImage ()’. By contrast the TFT_eSPI.h library supports graphics as good as the GFX library while animations perform perfectly and at high speed, both with ‘drawBitmap ()’ and ‘pushImage ()’ functions. We further discuss here the TFT_eSPI library and keep Adafruit_GFX.h in storage for future experiments.

The TFT_eSPI library is different from most libraries, e.g. Adafruit_GFX and U8G2 in the sense that the ‘constructor’ is inside a special file whose name is ‘Setup_xxxx.h’ that resides in the folder ‘User_setups’. These special files are ascii which makes them endlessly tweakable with a common ascii text editor. The specific Setup_xxxx.h is called in another setup file named User_Setup_Select.h that resides in the library’s main directory. Consider Bodmer’s ‘constructor’ systematics as a kind of two-stage rocket. Both stages need to be edited befor launch. The first stage is User_Setup_Select.h and the second stage is Setup_xxxx.h. After the editing has been done successfully the display will indeed perform ‘as a rocket’!

The display was with both platforms tested with graphical tests that are available for everyone in the Arduino IDE through File → Examples, while I also ran several of my own graphical tests as well that I created c-arrays of pictures and displayed these supported by the TFT_eSPI.h library. I recommend here to upload example TFT_Meter_5 available in the TFT_eSPI library ensemble (in the Arduino IDE: File → Examples → TFT_eSPI → 160×128 → TFT_Meter_5). Brilliant!

Below follows the complete listing of ‘Setup_FW_ESP8266_ST7735_TFT_017.h’. For intimi: this is a modified Setup43_ST7735.h. I post here a screen capture because the WordPress editor has problems with the character ‘#’.

One way to demonstrate what one can do with a small display that runs animations is to make it part of a building, let’s say a shop window or something similar. Fortunately the 0.96′ display nicely fits in portrait orientation a front door in the Lego plastic building block system. So I scooped up some material from my children’s Lego assortment and constructed a Swiss chalet that features in the front door the 160*80 TFT display. This display is powered by an ESP32WROOM32. The rooms were fitted with white leds that can be switched on and off. Switching is controlled by an Arduino Nano and is completely separate from all the action happening at the front door. For the purpose of preparing Figure 5 I replaced the animation by a static 160*80 Panda bear image – “there’s a bear at the front door, mama!”.

OpenArduino IDE,findTFT_eSPIin the file, and for example, theT-Displayfactory test program is located atTFT_eSPI -> FactoryTest, you can also use other sample programs provided by TFT_eSPI 3 In theArduino IDEtool options, select the development boardESP32 Dev Module,select Disable in the PSRAM option,select 4MB in the Flash Size option, Other keep the default

ESP chips can generate various kinds of timings that needed by common LCDs on the market, like SPI LCD, I80 LCD (a.k.a Intel 8080 parallel LCD), RGB/SRGB LCD, I2C LCD, etc. The esp_lcd component is officially to support those LCDs with a group of universal APIs across chips.

LCD Panel IO Operations - provides a set of APIs to operate the LCD panel, like turning on/off the display, setting the orientation, etc. These operations are common for either controller-based LCD panel driver or RGB LCD panel driver.

esp_lcd_panel_io_spi_config_t::spi_mode sets the SPI mode. The LCD driver will use this mode to communicate with the LCD. For the meaning of the SPI mode, please refer to the SPI Master API doc.

esp_lcd_panel_io_i2c_config_t::dev_addr sets the I2C device address of the LCD controller chip. The LCD driver will use this address to communicate with the LCD controller chip.

More LCD panel drivers and touch drivers are available in IDF Component Registry. The list of available and planned drivers with links is in this table.

This guide is about DWIN HMI Touch Screen TFT LCD Display. HMI Means Human-Machine Interface. DWIN is specialized in making HMI Touch screen displays that are compatible with all microcontrollers like Arduino, STM32, PIC, and 8051 families of Microcontrollers.

This is a Getting Started tutorial with 7-inch DWIN HMI TFT LCD Display. We will see the architecture, features, board design, components, and specifications. We will also learn about the TTL & RS232 interfaces. Using the DGUS software you can create UI and with SD Card you can load the firmware on display memory.

One of the method to load the firmware to the T5L DWIN LCD Display is by using the SD Card. An SD Card of up to 16GB can be used to download the firmware files. We can easily insert the Micro SD card into the SD Card slot on the backside.

After copying the file, remove the SD Card from your computer and insert it into the SD Card slot of DWIN LCD Display. Then power the display using the USB Cable. The firmware downloading process will start automatically.

The next part of this tutorial includes creating UI and interfacing DWIN LCD Display with Arduino. For that you can follow the DWIN LCD Arduino Interfacing Guide.