wemos d1 mini tft display free sample

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.

Needs some wiring. This shield can"t be used directly on Wemos D1, because two pins are duplicated to the Arduino connectors: D5 is SCK and digital 5, D6 is MISO and digital 6.

As you all know the are a few variants of the 1.8" TFT on the internet. With the genuine Adafruit lcd-s there are usually no problems. But when using fake ones(usually from Aliexpress) you have to make some adjustments.

Bodmers TFT_eSPI library is very awsome and rich funcionality. And the best part is that he made it to handle the pixel offsets depending on wich kind of 1.8" TFT you are using.

Then uncomment the tft height an width. And then in my case(REDTAB) uncomment for eg: #define ST7735_REDTAB. After this save it for the moment and compile sketch and upload to board. To be sure i have defined the parameters in the sketch too.This is a bit long procedure, cause you have to compile and upload the sketch every time to board untill the offset is gone, but it is worth the experimenting. For editing the h. files i strongly suggest Wordpad. Images included.

The ST7789 TFT module contains a display controller with the same name: ST7789. It’s a color display that uses SPI interface protocol and requires 3, 4 or 5 control pins, it’s low cost and easy to use.

This display is an IPS display, it comes in different sizes (1.3″, 1.54″ …) but all of them should have the same resolution of 240×240 pixel, this means it has 57600 pixels. This module works with 3.3V only and it doesn’t support 5V.

The ST7789 display module shown in project circuit diagram has 7 pins: (from right to left): GND (ground), VCC, SCL (serial clock), SDA (serial data), RES (reset), DC (or D/C: data/command) and BLK (back light).

The first library is a driver for the ST7789 TFT display which can be installed from Arduino IDE library manager (Sketch —> Include Library —> Manage Libraries …, in the search box write “st7789” and install the one from Adafruit).

In the previous article (“WiFi OLED Mini Weather Station with ESP8266“) I have used the OLED kit from https://blog.squix.org. And as promised, this time it is about the “ESP8266 WiFi Color Display Kit”:

I had ordered both because I thought that the Color Display kit is needs the other kit as a base. Well, it turned out that both kits work independently. My bad. Actually this is good, as I have now two independent ESP8266 weather stations :-). An addition to that, they can exchange data (e.g. temperature/humidity) with a server, so that makes them a perfect dual weather station.

This time assembling the kit needs basic soldering skills. With the excellent tutorial by Daniel Eichhorn  (https://blog.squix.org/wifi-color-display-kit) this should be a piece of cake. The only consideration is what kind of headers to use. I opted for the ‘larger but flexible’ approach. That way I can separate the boards if needed.

In this guide we’re going to show you how you can use the 1.8 TFT display with the Arduino. You’ll learn how to wire the display, write text, draw shapes and display images on the screen.

The 1.8 TFT is a colorful display with 128 x 160 color pixels. The display can load images from an SD card – it has an SD card slot at the back. The following figure shows the screen front and back view.

This module uses SPI communication – see the wiring below . To control the display we’ll use the TFT library, which is already included with Arduino IDE 1.0.5 and later.

The TFT display communicates with the Arduino via SPI communication, so you need to include the SPI library on your code. We also use the TFT library to write and draw on the display.

In which “Hello, World!” is the text you want to display and the (x, y) coordinate is the location where you want to start display text on the screen.

The 1.8 TFT display can load images from the SD card. To read from the SD card you use the SD library, already included in the Arduino IDE software. Follow the next steps to display an image on the display:

Note: some people find issues with this display when trying to read from the SD card. We don’t know why that happens. In fact, we tested a couple of times and it worked well, and then, when we were about to record to show you the final result, the display didn’t recognized the SD card anymore – we’re not sure if it’s a problem with the SD card holder that doesn’t establish a proper connection with the SD card. However, we are sure these instructions work, because we’ve tested them.

In this guide we’ve shown you how to use the 1.8 TFT display with the Arduino: display text, draw shapes and display images. You can easily add a nice visual interface to your projects using this display.

The ILI9341 TFT module contains a display controller with the same name: ILI9341. It’s a color display that uses SPI interface protocol and requires 4 or 5 control pins, it’s low cost and easy to use.

The resolution of this TFT display is 240 x 320 which means it has 76800 pixels. This module works with 3.3V only and it doesn’t support 5V (not 5V tolerant).

The ILI9341 TFT display board which is shown in project circuit diagram has 14 pins, the first 9 pins are for the display and the other 5 pins are for the touch module.

So, the display part pins are numbered from 1 to 9 (from left to right): VCC (5V), GND (ground), CS (chip select), RST (reset), DC (or D/C: data/command), MOSI (or SDI), SCK (clock), BL (back light LED) and MISO (or SDO).

The first library is a driver for the ILI9341 TFT display which can be installed from Arduino IDE library manager (Sketch —> Include Library —> Manage Libraries …, in the search box write “ili9341” and choose the one from Adafruit).

The ILI9341 TFT display is connected to NodeMCU hardware SPI module pins (clock and data), the other pins which are: CS (chip select), RST (reset) and DC (data/command) are defined as shown below:

Nevertheless, I soldered on the connector and lit it up. Once it was lit up, it was obvious that not all the column drivers were lighting the pixels evenly. When I ran full screen color test, it became really obvious under pure white that the LCD itself had been damaged during production or mis-adhered with whatever tape or glue they were using. It looked like someone clamped it too hard because there was a distinct distortion that was to one side the display. It looked like either a clamp had been secured to tightly during the production process or the adhesive the bonded the display to the board was warping the LCD itself. Either way, these were an unacceptable pair of defects and made the display look awful.

So many of my projects involve displaying data fetched from the internet, which means the majority of my projects involve connecting a display to ESP8266. I wanted to make a device that would make this as simple as possible.

Even for projects involving a sensor and a display, I found it frustrating to have to the same wiring for the displays I was using over and over again.

I recently came across the S77789 display and I was really impressed by it. A relatively high resolution display (in Arduino terms at least) with full colour makes it a really nice display to work with!

While there are some display shields for ESP8266 boards, they usually use very small screens with low resolutions. Using the SMD female header to connect the D1 mini to the shield allowed me to use the large display while keeping the overall size of the board as small as possible.

Why are there 2 rows of headers either side? 2x8 SMD headers are much stronger than 1x8 SMD headers, so I thought it would make sense to use the 2x8 ones. The space was needed for the display anyways.

Is it compatible with the ESP32 D1 Mini? No, I thought it would be better for prototyping if the second row of headers were connected to the inner row, so you could just connect dupont wires directly into the shield. The consequence of this is that ESP32 version of the D1 mini would have GPIO pins connected to each other and some even connected directly to power pins. Let me know if you have interest in a version for the ESP32!

EVE3 3.5" SPI 320x240 Graphic TFT Display HMI Oversize Mountable Capacitive Touch Screen utilizes the FTDI/Bridgetek BT815 EVE (Embedded Video Engine) to create fast and economical HMI systems.

The Matrix Orbital EVE3 SPI TFT utilizes the FTDI/Bridgetek BT815 EVE (Embedded Video Engine) to create fast and economical HMI systems. With built in graphics operations, sound synthesizer, digital filter and support for multiple widgets you can create your own stunning screens and interfaces with the EVE Screen Designer software.

In this video we are going to take a first look at the Wemos D1 mini board. The new impressive ESP8266 based board. It is very small in size, very inexpensive but very powerful!

If you have watched some of my previous videos you will remember that I recently tested the WeMOS D1 board which resembles an Arduino Uno but uses the much faster and capable ESP8266 chip. Recently I discovered on Banggood.com another very promising board, the D1 mini board which also uses the ESP8266 chip. This board costs $5.6 and Banggood.com was kind enough to send a sample unit in order to test it and share my opinion about it with you.

The board is very small. It uses the ESP8266 EX chip which can operate at a frequency up to 160MHz. It has a lot of memory, 64Kb of instruction RAM, 96Kb of data RAM and 4MBs of flash memory to store your programs. It offers WiFi connectivity, Over the Air updates and much more. The D1 mini board offers 11 GPIO pins and one analog input. Despite its small size many shields are being developed for this board which I think is great, since this way we can easily build great Internet of Things projects! Of course we can program this board using the Arduino IDE.

I copied this link from the WeMos website. Then go to Tools -> Board and load the Boards Manager. Then all you have to do is to download the file for the ESP8266 boards. After that you can select the WeMos D1 Mini board and you are ready to use it. Let’s try the board. Let’s upload the standard blink program. We have to go to File -> Examples -> Basics -> Blink in order to load the program. We then make a slight modification to the program. The LED on the D1 mini board is connected to digital pin 4 and not 13 as it is in standard Arduino boards. So, in this line of code, instead of 13 we have to enter D4. That’s it, if we now upload the program to the board we can see that it is working fine. From that example you can see, that most programs already developed for Arduino can work with the D1 mini board with minor changes in pin numbers. That also means the most libraries for Arduino won’t work for this board out of the box. The developers must update them in order to work with the ESP8266 chip. Luckily since the ESP8266 chip is very popular, the most popular libraries for Arduino already work fine with the ESP8266 chip.