esp8266 tft display brands

ESP8266 has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during run-time.

The breakout has the TFT display soldered on (it uses a delicate flex-circuit connector) as well as a ultra-low-dropout 3.3V regulator and a 3/5V level shifter so that you can use it with 3.3V or 5V power and TTL control logic.

We have used Liquid Crystal Displays in the DroneBot Workshop many times before, but the one we are working with today has a bit of a twist – it’s a circle!  Perfect for creating electronic gauges and special effects.

LCD, or Liquid Crystal Displays, are great choices for many applications. They aren’t that power-hungry, they are available in monochrome or full-color models, and they are available in all shapes and sizes.

Today we will see how to use this display with both an Arduino and an ESP32. We will also use a pair of them to make some rather spooky animated eyeballs!

There are also some additional connections to the display. One of them, DC, sets the display into either Data or Command mode. Another, BL, is a control for the display’s backlight.

The above illustration shows the connections to the display.  The Waveshare display can be used with either 3.3 or 5-volt logic, the power supply voltage should match the logic level (although you CAN use a 5-volt supply with 3.3-volt logic).

Another difference is simply with the labeling on the display. There are two pins, one labeled SDA and the other labeled SCL. At a glance, you would assume that this is an I2C device, but it isn’t, it’s SPI just like the Waveshare device.

This display can be used for the experiments we will be doing with the ESP32, as that is a 3.3-volt logic microcontroller. You would need to use a voltage level converter if you wanted to use one of these with an Arduino Uno.

The Waveshare device comes with a cable for use with the display. Unfortunately, it only has female ends, which would be excellent for a Raspberry Pi (which is also supported) but not too handy for an Arduino Uno. I used short breadboard jumper wires to convert the ends into male ones suitable for the Arduino.

Once you have everything hooked up, you can start coding for the display. There are a few ways to do this, one of them is to grab the sample code thatWaveshare provides on their Wiki.

The Waveshare Wiki does provide some information about the display and a bit of sample code for a few common controllers. It’s a reasonable support page, unfortunately, it is the only support that Waveshare provides(I would have liked to see more examples and a tutorial, but I guess I’m spoiled by Adafruit and Sparkfun LOL).

Open the Arduino folder. Inside you’ll find quite a few folders, one for each display size that Waveshare supports. As I’m using the 1.28-inch model, I selected theLCD_1inch28folder.

You can see from the code that after loading some libraries we initialize the display, set its backlight level (you can use PWM on the BL pin to set the level), and paint a new image. We then proceed to draw lines and strings onto the display.

After uploading the code, you will see the display show a fake “clock”. It’s a static display, but it does illustrate how you can use this with the Waveshare code.

This library is an extension of the Adafruit GFX library, which itself is one of the most popular display libraries around. Because of this, there isextensive documentation for this libraryavailable from Adafruit.  This makes the library an excellent choice for those who want to write their own applications.

As with the Waveshare sample, this file just prints shapes and text to the display. It is quite an easy sketch to understand, especially with the Adafruit documentation.

The sketch finishes by printing some bizarre text on the display. The text is an excerpt from The Hitchhiker’s Guide to the Galaxy by Douglas Adams, and it’s a sample of Vogon poetry, which is considered to be the third-worst in the Galaxy!

Here is the hookup for the ESP32 and the GC9A01 display.  As with most ESP32 hookup diagrams, it is important to use the correct GPIO numbers instead of physical pins. The diagram shows the WROVER, so if you are using a different module you’ll need to consult its documentation to ensure that you hook it up properly.

The TFT_eSPI library is ideal for this, and several other, displays. You can install it through your Arduino IDE Library Manager, just search for “TFT_eSPI”.

There is a lot of demo code included with the library. Some of it is intended for other display sizes, but there are a few that you can use with your circular display.

To test out the display, you can use theColour_Test sketch, found inside the Test and Diagnostic menu item inside the library samples.  While this sketch was not made for this display, it is a good way to confirm that you have everything hooked up and configured properly.

A great demo code sample is theAnimated_dialsketch, which is found inside theSpritesmenu item.  This demonstration code will produce a “dial” indicator on the display, along with some simulated “data” (really just a random number generator).

One of my favorite sketches is the Animated Eyes sketch, which displays a pair of very convincing eyeballs that move. Although it will work on a single display, it is more effective if you use two.

The first thing we need to do is to hook up a second display. To do this, you connect every wire in parallel with the first display, except for the CS (chip select) line.

The Animated Eyes sketch can be found within the sample files for the TFT_eSPI library, under the “generic” folder.  Assuming that you have wired up the second GC9A01 display, you’ll want to use theAnimated_Eyes_2sketch.

The GC9A01 LCD module is a 1.28-inch round display that is useful for instrumentation and other similar projects. Today we will learn how to use this display with an Arduino Uno and an ESP32.

The IoD-09 modules feature a full colour 0.9” TFT LCD display. They are powered by the WiFi enabled ESP8266, which offers an array of functionality and options for any Designer / Integrator / User.

This range of modules has been designed to minimise the impact of display related circuitry, and provide a platform suitable for integration into a product.

The IoD-09 modules can act as master or slave devices, they can be effortlessly connected to the internet, can display a raft information and graphics, along with the capability to communicate to SPI, I2C, and/or 1-wire devices, as well as having general GPIO for digital control/input.

Based on the ESP8266 WIFI module, Makerbase develops this tool that allows us to configure the Wifi function in a simple and practical way for our 3D printers.

It is a 2.0 inch TFT display module.TFT liquid crystal has a semiconductor switch for each pixel,and each pixel can be directly controlled by dot pulses,so each node is relatively independent and can be continuous...

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.

Arduino nano RP2040 has fast SPI so it can work to run a uncanny eye on TFT display. you can use this board and adafruit libraries to connect this board, visitadafruit pagefor more details but for now we are using wemos D1 mini board.

Wemos D1 mini is an ESP8266 breakout board. It has CH340 ic to easily communicate with ESP8266 over serial, also this CH340 is helping to program the ESP8266 over serial, But first, you have to install the driver for the CH340 chip if you don’t know how to install the CH340 driver then read firstbegin with Wemos D1 mini.

TFT stands for thin-film-transistor liquid-crystal display. It is a variant of a liquid-crystal display (LCD) that uses thin-film-transistor (TFT) technology to improve image qualities such as addressability and contrast.

Before we upload the program to the Wemos D1 mini-board, we have to install the driver first. The Wemos D1 mini board has a CH340 chip to communicate and program ESP8266 on board. But you are not able to communicate via CH340 without installing the driver.

If your driver is successfully installed then you are ready to program the Wemos D1 mini-board, But before uploading the Code firstly install the “TFT_eSPI” library.

OpenArduino IDEand go to theSketch >> Include Library >> Manage Librariesand here type “TFT_eSPI” and hit enter. Now scroll down you will see the library, install the latest version of the library.

Now you will see an Uncanny Eye on your TFT screen as shown in the image, if your screen is still blank then check the connection, if still your screen is blank try to connect it with Arduino Uno but remember to connect 1k resister on each pin because Arduino Uno works on 5V logic but TFT works on 3V3 logic.

Now TFT with Wemos D1 mini board is working fine but it is working with the USB supply via Computer or laptop. We need to make it more portable so we can easily carry it and take it where we want.

If you have noticed there is a 330ohm resistor connected on the D2 pin, this is because the 134N4p module requires a minimum of 60mA current draw to wake up continuously, it currently does not reach 60mA it will restart. So I connected this resistor on this D2 pin and it will be high when code is running on the Wemos board. The total current of Wemos board and TFT is 50mA so I connected this 330 resistor and because the pin can give 3.3v output the current draw across the resistor is 10mA, the overall current is 60mA so 134N3P module will not shut down in the middle of it still getting restart just decrease the resistance value.

Take your 3D print, but make sure it is fully dry. First of all, put TFT inside the front section of the 3D print which has a hole. Put some hot glue to make it stable in place.

I inserted the battery just behind the TFT display and the Wemos module behind the 134N3P module, you will see some different setups in the image, what was wrong I have changed it later but forgot to take pictures.

I have two the same brand new displays of this type, several NodeMCU Lolin V3 boards. I checked the wires. Played around with several configuration parameters that I didn"t understand well like ST7735_INITB/ST7735_GREENTAB3/ST7735_REDTAB. etc.