WOKWI and Arduino UNO
The WOKWI platform is a great tool for creating projects with Arduino UNO. It allows users to select their favorite microcontroller, in this case, the Arduino Uno, and use it to create projects with a variety of components. One of these components is the 128×128 OLED display, which is based on the SH1107 chip. This display offers a range of advantages over other displays, including the ability to save the image or copy the image of the display.
Drawing Images for OLED Display
In order to draw images for the OLED display, users can use a free online graphic editor such as Photop. This allows users to create images in a format that can be converted into a hexadecimal array, which is the format that the OLED library requires. This makes it easy for users to create their own custom images for the display.
Using the OLED Library
Once the image has been created, users can then use the OLED library to display the image on the display. The library provides a range of functions for controlling the display, including functions for drawing lines, circles, and rectangles. It also provides functions for displaying text and images.
Benefits of OLED Display
The OLED display offers a range of benefits over other displays. It has a higher resolution than most other displays, which means that it can display more detailed images. It also has a wide viewing angle, which makes it easier to view the display from different angles. Finally, it has a low power consumption, which makes it ideal for battery-powered projects.
Arduino UNO + 128×128 OLED Display in WOKWI (SH1107)
The Arduino UNO and 128×128 OLED display, when used in conjunction with WOKWI (SH1107), can open up a world of new possibilities. This combination of hardware and software can be used to create a wide range of projects, from simple displays to complex interactive applications.
Exporting an Image as a PNG
The first step in using the Arduino UNO and 128×128 OLED display is to export an image as a PNG. This can be done by going to the File menu and selecting Export. Once the image is saved, it can be used to convert the image into a byte array. This can be done by uploading the image to the CPP website and selecting the Swap checkbox. Once the code is generated, it can be copied and pasted into the sketch.
Simplifying the Main Sketch
Once the image is ready, the main sketch can be simplified. This can be done by deleting all the variables, keeping the setup and U2 begin functions, and deleting all the helper functions. The main loop should be kept, but all the other code should be deleted. The only code that should remain is the draw XBM function for drawing the image.
Drawing the Image
Once the main sketch is simplified, the image can be drawn. This can be done by using the draw XBM function. This function takes the byte array generated from the CPP website and draws it on the OLED display. Once the image is drawn, it can be used to create a wide range of projects.
The Challenge of Limited RAM Memory
The Arduino UNO, which is being used in this sketch, only has 2 kilobytes of RAM memory, making it difficult to fit the buffer of the 128×128 OLED display. This buffer requires 16000 bits or 2000 bytes, which is more than the available RAM memory. This means that the buffer cannot be stored in the Arduino RAM, as other variables and functions must also be stored in the RAM.
The Solution: WOKWI SH1107
Fortunately, there is a solution to this problem. WOKWI has developed the SH1107, a library that allows the Arduino UNO to access the 128×128 OLED display without using the RAM memory. The SH1107 library is a powerful tool that allows users to access the display without having to worry about memory constraints. It works by using the SPI interface to access the display, which allows for faster data transfer and more efficient use of the RAM memory.
Using the SH1107 Library
Using the SH1107 library is relatively straightforward. The library provides a set of functions that allow users to draw images, text, and other elements on the display. The library also provides a set of functions for controlling the display, such as setting the brightness and contrast. The library also provides a set of functions for reading data from the display, such as the current temperature and humidity.
The U2 Library
The U2 Library is a powerful tool for drawing to OLED displays. By splitting the drawing into individual pages, each page is 128 by 8 pixels, meaning that only 128 bytes of buffer is needed in RAM. This buffer is then sent to the display, cleared and repeated multiple times to update the whole display. This process can be seen in action by introducing a delay of one second into the drawing loop. The image is then updated page by page until the whole display is updated.
Improving Performance
The performance of the U2 Library can be improved by increasing the size of the individual pages. This can be done by calling the initialization with a value of two instead of one. This increases the size of each page to 128 by 16 pixels, resulting in a faster update time.
WOKWI and SH1107
The combination of Arduino UNO and 128×128 OLED Display in WOKWI (SH1107) provides a powerful platform for creating interactive projects. The U2 Library can be used to draw to the display, with the performance improved by increasing the size of the individual pages. This opens up a range of possibilities for creating innovative projects with Arduino UNO and OLED Display.
The contrast value and that did the trick, but this time I will try something else.
Compatibility of Arduino UNO and 128×128 OLED Display
The Arduino UNO is a popular microcontroller board that is widely used in various projects. It is compatible with a variety of displays, including the 128×128 OLED display. The OLED display is a great choice for displaying text, images, and other information. However, it requires a special library to be used with the Arduino UNO. The u8g2 library is the most popular library for the OLED display, and it is easy to install and use.
Using WOKWI (SH1107) for Arduino UNO
The WOKWI (SH1107) is a special library designed specifically for the Arduino UNO and 128×128 OLED display. It is a powerful library that allows users to create complex graphics and animations. It also provides support for the display’s built-in functions, such as scrolling and fading. The library is easy to use and provides a simple interface for programming the display.
Advantages of WOKWI (SH1107)
The WOKWI (SH1107) library provides several advantages over other libraries. It is optimized for the Arduino UNO and 128×128 OLED display, so it runs faster and more efficiently. It also provides support for the display’s built-in functions, such as scrolling and fading. Additionally, the library is easy to use and provides a simple interface for programming the display.
Limitations of WOKWI (SH1107)
The WOKWI (SH1107) library does have some limitations. It is optimized for the Arduino UNO and 128×128 OLED display, so it may not be compatible with other displays. Additionally, the library does not support the full range of features available on the display. For example, it does not support the display’s built-in functions, such as scrolling and fading.
The Arduino UNO and 128×128 OLED display in WOKWI (SH1107) offer a range of new possibilities for users. With the U2 Library Source, users can access a range of different displays with this resolution, including those from Pimoroni. This allows users to quickly and easily set up their display with the correct initialization and connection.
Hardware Connections
The hardware connection for the Arduino UNO and 128×128 OLED display is relatively simple. The connection number two inside the U2 Library Source is the one that needs to be used. This connection can be easily copied into the Arduino sketch, and the page buffer size should be commented out.
Testing the Connection
Once the connection is set up, users can test it by uploading the sketch to the Arduino UNO. If successful, a full-screen image should be displayed on the OLED display. This process is quick and easy, allowing users to quickly and easily set up their display.
Further Possibilities
The Arduino UNO and 128×128 OLED display in WOKWI (SH1107) offer a range of possibilities for users. With the U2 Library Source, users can access a range of different displays with this resolution, allowing them to create interesting projects. Furthermore, the connection is simple and easy to set up, allowing users to quickly and easily get their project up and running. Finally, the display can be used in V, meaning users can create videos using the display.
The combination of the Arduino UNO and the 128×128 OLED display based on the SH1107 chip offers a range of new possibilities for WOKWI projects. With the OLED library, users can easily create and display custom images on the display. The OLED display also offers a range of benefits over other displays, making it an ideal choice for a variety of projects.
The Arduino UNO and 128×128 OLED display, when used in conjunction with WOKWI (SH1107), can open up a world of new possibilities. By exporting an image as a PNG, converting it into a byte array, and simplifying the main sketch, the image can be drawn on the OLED display. This combination of hardware and software can be used to create a wide range of projects, from simple displays to complex interactive applications.
The Arduino UNO and 128×128 OLED display can be used together with the WOKWI SH1107 library to create powerful projects. The library allows for efficient use of the RAM memory, allowing users to access the display without worrying about memory constraints. With the SH1107 library, users can draw images, text, and other elements on the display, as well as read data from the display.
The WOKWI (SH1107) library is a powerful library designed specifically for the Arduino UNO and 128×128 OLED display. It provides a simple interface for programming the display and is optimized for the Arduino UNO and 128×128 OLED display. However, it does have some limitations, such as not supporting the full range of features available on the display. Despite these limitations, the WOKWI (SH1107) library is a great choice for users who want to create complex graphics and animations on the Arduino UNO and 128×128 OLED display.