arduino lcd module sd card reader factory

Key Features: Use this small LCD screen with Arduino Robot, Esplora, or on breadboard. The screen is 1.77" diagonal, with 160 x 128 pixel resolution. Includes micro-sD socket The LED backlight is dimmable by PWM. The screen" s headers are laid out so it easily sockets into the Arduino Esplora and Arduino Robot. The Arduino TFT screen is a backlit LCD screen with headers. You can draw text, images, and shapes to the screen with the TFT library. There is an onboard micro-SD card slot on the back of the screen that can, among other things, store bitmap images for the screen to display. The screen" s headers are designed to fit into the socket on the front of the Arduino Esplora, but it is compatible with any AVR-based Arduino (Uno, Leonardo, etc) or with the Arduino Due. The TFT library interfaces with the screen" s controller through SPI when using the TFT library. Item Specifics The screen runs on +5 VDC

Every now and then, you get an idea for an Arduino project that needs a way to store a lot of log data and other information, like a GPS logger or a temperature logger.

The solution is to use something that can be found in any digital camera or MP3 player: Flash Cards! They are often called SD cards or microSD cards. Their ability to fit Gigabytes of data into a space smaller than a coin makes them an essential part of our lives.

A standard microSD card has an operating voltage of 3.3 V. As a result, we cannot connect it directly to circuits that use 5V logic; in fact, any voltages above 3.6V may permanently damage the microSD card. That is why the module includes an onboard ultra-low dropout voltage regulator capable of regulating voltage to 3.3V.

The module also includes a 74LVC125A logic level shifter chip, allowing for safe and easy communication with your favorite 3.3V or 5V microcontroller without damaging the SD card.

There’s a microSD card socket on the front! Any microSD memory card will work perfectly. The proper direction to insert a microSD card is usually printed on the module.

SDIO mode is much faster and is used in mobile phones, digital cameras, and other devices. However, it is more complicated and requires the signing of non-disclosure agreements. Because of this, hobbyists like us are unlikely to come across SDIO mode interface code.

If you have a new SD card, chances are it’s already pre-formatted with a FAT file system; however, you may encounter issues with how the factory formats the card. Or, if you have an old card, it needs to be formatted. In any case, it’s a good idea to format the card before using it.

It is recommended that you use the official SD card formatter utility developed by the SD association. It can solve a lot of problems caused by bad formatting! Download and run the formatter on your computer; simply select the appropriate drive and click Format.

Now we are left with the pins that are used for SPI communication. Because microSD cards require a lot of data transfer, they perform best when connected to the microcontroller’s hardware SPI pins.

Communicating with an SD card is a lot of work, but luckily for us, the Arduino IDE already includes a very useful library called SD that makes reading and writing SD cards easier.

Let’s start with a simple CardInfo example sketch. This sketch doesn’t write any data to the card. Instead, it tells you if the card is recognized and shows you some information about it. This can be very useful when determining whether or not an SD card is supported. It is therefore recommended that you run this sketch once before trying out a new card.

Now, insert the SD card into the module and upload the sketch. When you open the Serial Monitor, you may see different results depending on the scenario.

If everything is fine, you should see some useful information. For example, in our case, the card type is SDHC (SD High Capacity), the volume type is FAT32, and the size of the card is 4 GB.

Although the card responded, all the data is inaccurate. As you can see, there is no Manufacturer ID or OEM ID, and the Product ID is ‘N/A.’ It appears the card returned SD errors.

If there is a wiring error or the card is permanently damaged, you will see something similar to this. You can see that it couldn’t even initialize the SD card.

Next, we declare the Arduino pin to which the SD card module’s CS (Chip Select) pin is connected. Except for the CS pin, we do not need to declare any other SPI pins because we are using a hardware SPI interface and these pins are already declared in the SPI library.

In the setup() section, we initialize the serial communication and call the SD.begin() function. If it manages to recognize the card, it prints “initialization done.” on the serial monitor. If it doesn’t, it prints “initialization failed!” and the program terminates.

We then close the file by using the close() function. This function closes the file and makes sure that any data written to it is saved to the SD card.

You can open files in a directory. To open a file in the directory, for example, use SD.open("/myfiles/example.txt"). Remember that the path to the file is relative.

The SD card library does not support long filenames because it uses the 8.3 filename format. So keep file names short. For instance, “datalog.txt” is fine, but “My Sensor log file.text” is not!

I am trying to make a truly Universal Remote Control out of this mess. I just got the Arduino Uno & the Display and put it together and there are NO pins left to operate an IR LED.

Can you elaborate on which libraries will work, I"ve been fighting with this thing since I got it. I need it to play a simple video if possible. I"m trying to help an elderly lady in her 80s be able to watch videos from the SD card. Any help would be greatly appreciated. It"s for a very good cause.0

Can this 2.8" elegoo display play video at all? I"m trying to make a unit that an older woman, in her 80"s can play a video on it, if I set it up correctly? This is for a really good cause, I desperately need help, this is super important. Helping elderly folks with modern technology is tough. But I really need it to be able to play a video off the SD card if possible. Any help would be super highly appreciated.ReplyUpvote

Hello,please post our code also ..the screen driver must be known and that info must be known in order to get these things to work correctly..you show your code and then the vid blurs..Someone needs to write a pdf teaching how ,what ,when and why concerning these screens I would gladly pay $10.00 and I am sure others would too.I have 3 different tftlcds only 1 works its for the mega and Bomer has a lib for it,I am really considering use of Nextion units from now on 4 pins easy programming but higher cost...also the small cell phone screens use spi mode and are real easy to set up and use

The program runs and nothing is displayed but a white screen. when I open the COM4 I see that when I hit the screen numbers appear to calibrate the screens position so it is registering but not showing up on the LCD. please help me before I pull all my hair out.1

I"m thinking I need an Arduino Mega to do what I want - a Universal Remote. Because after mounting the display there are NO pins left for anything else.0

I"m having issues getting this display to work on my Arduino 101 board with the libraries that are suggested - errors in compiling seem to indicate that the board type isn"t supported in the Adafruit_TFTLCD library. Here"s a representative error:

I finally got the touchscreen to work correct using your links to the libraries. Found out that this specific TFT display module uses pin 6 & 7 for touch sensor, instead of the standard 4 & 5.0

I never received a response on this, so went through the painful process of copying code from the video. It can be found here for others that might need it. Not that this has some minor changes, but is fully functional and I will continue to refine: https://github.com/siliconghost/Arduino_2.8in_TFT_wSD

The Arduino TFT screen is a backlit LCD screen with headers. You can draw text, images, and shapes to the screen with the TFT library. There is an onboard micro-SD card slot on the back of the screen that can, among other things, store bitmap images for the screen to display.

The screen"s headers are designed to fit into the socket on the front of the Arduino Esplora, but it is compatible with any AVR-based Arduino (Uno, Leonardo, etc) or with the Arduino Due. The TFT library interfaces with the screen"s controller through SPI when using the TFT library.

This ST7735S 1.8" TFT Display features a resolution of 128×160 and SPI (4-wire) communication. Integrated with an SD card slot, it allows to easily read full-color bitmaps from the SD card. The module provides users with two wiring methods: pin header wiring and GDI (General Display interface). You can directly use an FPC cable to connect the display to any controller with GDI interface like FireBeetle-M0. Plug and play, easy to wire. Besides, the display supports low refresh rate and offers good display effect and strong versatility. It can be used in applications like sensor monitoring and alarm, Arduino temperature monitor, fan controller, etc.

This product is a breakout module that features SPI communication mode and onboard GDI interface, which could reduce the complexity of wiring. It can easily display the read content from the SD card.

This guide shows how to use a microSD card with the ESP32: you’ll learn how to read and write files to the microSD card. To interface the microSD card with the ESP32 board, we’ll use a microSD card module (SPI communication protocol). Using a microSD card with the ESP32 is especially useful for data logging or storing files that don’t fit in the filesystem (SPIFFS). The ESP32 will be programmed using the Arduino core.

There are different microSD card modules compatible with the ESP32. We’re using the microSD card module sown in the following figure – it communicates using SPI communication protocol. You can use any other microSD card module with an SPI interface.

This microSD card module is also compatible with other microcontrollers like the Arduino and the ESP8266 NodeMCU boards. To learn how to use the microSD card module with the Arduino, you can follow the next tutorial:

Before proceeding with the tutorial, make sure you format your microSD card as FAT32. Follow the next instructions to format your microSD card or use a software tool like SD Card Formater (compatible with Windows and Mac OS).

If you use the SD library, you’re using the SPI controller. If you use the SDD_MMC library you’re using the ESP32 SD/SDIO/MMC controller. You can learn more about the ESP32 SD/SDIO/MMC driver.

There are several examples in Arduino IDE that show how to handle files on the microSD card using the ESP32. In the Arduino IDE, go to File> Examples> SD(esp32) > SD_Test, or copy the following code.

Alternatively, you can use the SD_MMC examples – these are similar to the SD examples, but use the SDMMC driver. For the SDMMC driver, you need a compatible microSD card module. The module we’re using in this tutorial doesn’t support SDMMC.

First, you need to include the following libraries: FS.h to handle files, SD.h to interface with the microSD card and SPI.h to use SPI communication protocol.

The listDir() function lists the directories on the SD card. This function accepts as arguments the filesystem (SD), the main directory’s name, and the levels to go into the directory.

The readFile() function reads the content of a file and prints the content in the Serial Monitor. As with previous functions, pass as an argument the SD filesystem and the file path.

If you don’t pass any argument to the begin() function, it will try to initialize SPI communication with the microSD card on the default chip select (CS) pin. If you want to use another CS pin, you can pass it as an argument to the begin() function. For example, if you wanted to use GPIO 17 as a CS pin, you should use the following lines of code:

The SD.h and SD_MMC.h libraries use the VSPI SPI pins (23, 19, 18, 5) by default. You can set other pins as SPI pins. The ESP32 features two SPI interfaces: HSPI and VSPI on the following pins:

Using a microSD card is especially useful for data logging projects. As an example, we’ll show you how to save sensor readings from a BME280 sensor with timestamps (epoch time).

You can install these libraries using the Arduino library manager. In your Arduino IDE, go to Sketch> Include Library > Manage Libraries… Then, search for the library names and install them.

Copy the following code to your Arduino IDE. This sketch gets BME280 sensor readings (temperature, humidity, and pressure) and logs them in a file on the microSD card every 30 seconds. It also logs the timestamp (epoch time requested to an NTP server).

Let the project run for a while to gather some readings. Then, insert the microSD card on your computer, and you should have a file called data.txt with the sensor readings.

You can save the files to build a web server with the ESP32 on a microSD card (HTML, CSS, JavaScript, and image files). This can be useful if the files are too big to fit on the ESP32 filesystem, or it can also be more convenient depending on your project.

After uploading the files to the microSD card and the sketch to your ESP32 board, open the Serial Monitor at a baud rate of 115200. Press the ESP32 on-board RST button. The ESP32 IP address will be displayed on the Serial Monitor.

On your local network, open a web browser and type the ESP32 IP address. You should get access to the following web page built with the files stored on the microSD card.

In this tutorial, you’ve learned how to interface a microSD card with the ESP32 and read and write files. You’ve also learned how to use it for data logging projects or store files to serve in your web server projects.

If you are an embedded engineer and working in the electronic industry, every once in a while there will be situations where you need to log and store a huge amount of data that the internal memory of an Arduino can handle, examples could be like any logger project like battery energy logger, Temperature logger or GPS Tracker. The solution to this problem is to use an SD card or micro sd card that packs gigabytes of data and its size is smaller than a one rupee coin. So in this tutorial, we decided to interface the SD Card module with Arduino and we will let you know all the details. So without further ado let"s get right into it.

The Micro SD Card module has 6 pins; those are GND, VCC, MISO, MOSI, SCK, and CS. All the pins of this sensor module are digital, except VCC and Ground. The Pinout of a Micro SD Card Module is shown below:

This is a cheap and easy-to-use sensor that can be used for many different applications. This sensor can be used to read SD card data with microcontroller. The parts marking of the SD Card Module is shown below.

If you take a close look at the Micro SD Card module, there is not much on the PCB itself. There are only three components that are significant, first is the Micro SD Card Holder Itself. This holder makes it easy for us to swap between different SD card modules. The second most important thing is the level shifter IC as the SD card module runs only on 3.3V and it has a maximum operating voltage of 3.6V so if we directly connect the SD card to 5V it will definitely kill the SD card. Also, the module has an onboard ultra-low dropout regulator that will convert the voltage from 5V to 3.3V. That is also why this module can operate on 3.3V power.

SD cards are preprogrammed with firmware. Firmware contains the instructions in ROM (read-only memory) for the device and enables the device to "boot up."

The simple and straightforward answer to this question is yes it shortens the life of the SD Card. Format goes through the entire card, clears the data, and marks the blocks as available. Since cards have a finite amount of read/write, formatting can shorten the life of a card.

exFAT (Extensible File Allocation Table) is a file system introduced by Microsoft in 2006 and optimized for flash memory such as USB flash drives and SD cards. exFAT was proprietary until 28 August 2019, when Microsoft published its specification. Microsoft owns patents on several elements of its design.

As you can see in the above schematic, we have the Micro SD Card connector which is a push-out type connector and the connector is connected to a logic level shifter IC. The maximum operating voltage of the module is 3.6V so the logic level shifter IC becomes very important. To power the SD card and the logic level converter, we are using a LM1117 LDO which is why this module can work with both 3.3V and 5V logic levels. The connector JP1 at the bottom of the schematic represents the connector at the bottom of the micro SD card module.

Now that we have completely understood how a Micro SD Card Module works, we can connect all the required wires to the Arduino and write the code to get all the data out from the sensor. The Connection Diagram of the Micro SD Card Module with Arduino is shown below-

Connecting the Micro SD Card module to the Arduino UNO is very simple we just need to connect the SPI lines that is SCK, MISO, and MOSI, to the Arduinos SPI line that is SCK(D13), MOSI(D12), and MISO(D11) and if there are multiple devices connected on the SPI bus then we also need to connect the CS line to the Arduino. Other than that the VCC and Ground are used to power the device.

Before inserting the SD Card into the SD card reader module, you need to properly format the card before you can actually work with it, otherwise, you would have problems because the SD card reader module can only read FAT16 or FAT32 file systems. If your sd card is new then chances are that the card is factory formatted, that may also not work because a pre-formatted card comes with a FAT file system, either way, it"s better to format the old card to reduce issues during operation.

The Arduino to read and write data from the SD card module is shown below. The code is very simple and easy to understand. The code checks if there exists a file name “data_log.txt” if the file exists then it proceeds to write the given information onto the SD card and if not, the code will create the file in the SD card and then write the data onto the sd card. We can later open the file and check the contents if it"s written or not.

We start our code by defining the SD library and we also declare the chipSelectpin of the module, next we define a file type variable and name that myFile.

Next, we have our setupfunction; in the setup function, we initialize the serial for debugging. We also check if the SD card is connected properly to the SPI pins of the Arduino.

Next, we have made a function named “check_and_create_file()”. In that function, we check if data_log.txt file exists in the SD card or not, if the file exists, we will proceed with our code and if not, then we will create the file. To create a file on the SD card you just need to open and close it very rapidly without a delay and the file will be created.

Next, we will write some text to the SD card and we will also read that text back into the serial monitor window. This way we will know that the text was written successfully on the SD card. We have made a function named read_write_sd_text()which does this automatically. Just call this function and you are done.

The gif below shows how the SD Card module works. We wrote the arduino code so that after the arduino initializes the code will check if it can find a SD card or not. If it finds an SD card it will check if the text file exists or not if the file exists the code will continue, if not the code will simply create a new text file and once that is done it will write testing 1, 2, 3. Inside the text file. Next the code will read the text file and print the data inside the text into the serial monitor window.

Check if the power supply to the module is working properly or not. Check whether the onboard LM1117-3.3V voltage regulator is working properly or not.

Sometimes quick format in windows systems does not work, so you need to format the card using regular format method or you can use the Windows CMD to format the micro sd card.

If you are searching for PIC microcontroller based projects, this project could be what you are looking for because in this project we have used a PIC18F46K22 and SD Card module to build an example that can save text data onto an SD Card Module.

If you are searching the internet for a project on data logger then this project could be for you because in this project we have interfaced a SD Card module with Arduino and stored Temperature, Humidity, and Time on a SD Card module.

If you are interested in building yourself a digital infrared thermometer then this project is for you. In this project, we have not only built a thermometer but we have also used a SD Card Module to store the data in a SD card module so that we could recall the data if needed.

Open Arduino IDE, find TFT_eSPI in the file and example, the T-Display factory test program is located at TFT_eSPI -> FactoryTest, you can also use other sample programs provided by TFT_eSPI

3 In the Arduino IDE tool options, select the development board ESP32 Dev Module, select Disable in the PSRAM option, select 4MB in the Flash Size option, Other keep the default

This Arduino album project is simple as it uses mainly an Arduino Uno board and an Arduino touch LCD shield only. The photographs to be displayed are converted to 240×320-pixel size with 24-bit colour format in BMP (bitmap) files using Microsoft Paint (or similar) software and stored on a micro SD card that is normally used for cell phones.

The Arduino Uno is a widely used microcontroller board based on Atmega328P microprocessor that is used in Arduino family boards. It has 14 digital input/output pins of which six can be used as PWM outputs and six as analogue inputs, and a USB port with 16MHz quartz crystal.

The Arduino touch LCD shield works on ILI9341 chip and has a built-in microSD card. The shield’s LCD display is sufficiently big (6cm, diagonally), bright (with four white-LED backlight), and colourful (18-bit having 262144 different shades). It has good resolution of 240×320 pixels with individual pixel control, 8-bit digital interface, plus four control lines with reset pin. The SD card has four more control pins. All the pin connections are directly compatible with Arduino Uno board, which eliminates wiring and new PCB requirement. It uses 3.3V power supply and supports both 3.3V or 5V logic levels.

Here MAX_FILES is the maximum number of files to be stored in the SD card and to be displayed sequentially, and DISP_DELAY is the delay (or time gap) in milliseconds for displaying each photograph.

Now disconnect the SD card reader from the computer and take out the microSD from card reader. Insert the microSD into the microSD card slot in Arduino LCD shield, as shown in Fig. 2.

Properly position the Arduino LCD shield on the Arduino Uno board, matching the 5V, 3.3V, and GND pins. Connect a 9V DC power supply to the Arduino Uno board.

Once the root folder is read from the SD card, the list of files stored in the SD card will be displayed on the LCD screen. Thereafter the photographs will be displayed sequentially.

(Note. The original BMP file supports colours up to 24-bit resolution, whereas LCD shield supports colours up to 18-bit resolution. So, display output may have slight mismatch with colours of original BMP file.)