micro bit lcd screen factory

Instead of turning individual LEDs on or off, as above, you can display an image directly to the screen or show text and numbers on screen using the show number and show string functions.

The micro:bit runtime keeps a representation of the state of all 25 LEDS in memory. This state is known as the “display buffer” and controls which LEDs are on and which are off. The plot, unplot, and point functions access the display buffer directly. On the other hand, the functions that show an image, number, or string overwrite the buffer completely. To illustrate this, first try running this code sequence

Cytron Technologies just released the MakeCode extension for the 3.3V Serial LCD. This extension has also been tested with micro:bit V1.5 and micro:bit V2 for I2C serial communication. The extension is in the block language form and it very easy to use.

To program the LCD, we need the extension or the “driver” of this LCD. We can get the extension at this GitHub microbit-LCM1602-14-LCD-extension created by Cytron Technologies. This extension is compatible with all MakeCode programmable based which are JavaScript, Python, and even Block programming. Click the link given, the view will look like this :

There are 5 fundamental functions that been created in this extension for this LCD. The functions are the LCD initialization, LCD scroll right, left, set LCD’s column and row and function to write the text string.

Five of them are just fundamental functions for the LCD. You are encouraged to improve the code for your own application purposed by editing the repository in MakeCode. You can see at the README.md of this extension’s GitHub in the edit this project’s section to guide you.

We are done setting up the extension in MakeCode and understand how to use those functions, so, how about we do some application from the whole that we learnt before by displaying the ‘Hello World!’ on the LCD. Let’s go!

STEP 1:In order to display the text on the LCD, we need to initialize the communication first between the microcontroller and the LCD. This can be done by using the initialize block as shown in the clip and then enter the communication address.

STEP 2:Put the row and column block to allocate the text on the LCD. As an example, for me, I would like to allocate my text at the 0 row and 0 column.

STEP 5:Then, in the forever block, insert the loop block. We can get the loop block from the Loops section as shown in the video below. This is for looping the character whenever a new character register entered. The range of the loop depends on the column size of the LCD. So, in this case, the range to loop is from 0 to 15.

STEP 9:Plug the USB cable into the micro: bit and the micro: bit’s file will pop up. then, just drag and drop the program into the micro: bit’s file and wait until the file pop up again.

The Kitronik: VIEW Text32 is a character LCD showing 32 characters (2 lines of 16 characters). The: VIEW Text32 also breaks out the BBC micro:bit pins to edge pads (excluding pin14).

The bottom edge of the board has a replication of the BBC micro:bits own edge connector, this allows you to plug the: VIEW Text32 into any board that the micro:bit itself can be slotted into. This is great news if your project outputs strings of text and numbers that previously would have slowly scrolled across the LED Matrix.

The board has been designed so that the BBC micro:bit can be slotted into the edge connector on the top side of the PCB. No extra tools are required for installation, the board is supplied and ready to go –plug and play/work!

The Kitronik :VIEW Text32 is a character LCD Screen showing 32 characters (2 lines of 16 characters). It also breaks out the BBC micro:bit pins to edge pads (excluding pin14).

The board features a replicated microbit edge connector allowing you to plug the :VIEW Text32 into any board that a microbit itself can be slotted into. You can slot the BBC micro:bit into the edge connector on the top side of the PCB. Installation requires no additional tools; the board is ready to use — simply plug in and play/work!

The board also features an on-board 3 x AAA battery holder that powers the display, the microbit,  and the replicated edge connector. There is a power switch that allows you to turn the battery supply on and off. The replicated edge connector has a current capacity of 90mA. (as per the normal micro:bit)

and I have this shield :ELECFREAKS is your best choice for micro:bit accessories. We have searchable catalogue of accessories and add-ons designed on our website.

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