Liquidcrystal i2c

Liquidcrystal i2c. js library for accessing LCD character displays using I2C via a PCF8574 port expander, typically found on inexpensive LCD I2C "backpacks". Jul 2, 2017 · I2C_Scanner. Jan 26, 2019 · That library will auto detect the I2C address and, more importantly, the I2C expander to LCD pin mapping which can be a major stumbling block for new users. Author: Adafruit. This library uses the original Wire library for communication. 05. Jan 12, 2023 · LiquidCrystal_I2C please check the above link. Fork of LiquidCrystal HD44780-compatible LCD driver library, now with support for ATtiny85. begin() may well block for longer than that since the begin method if filled with delay() statements. In LcdControl, you simply pack in your additional methods. They don't specify the size of the display. They are only compiled if found in the . ) to LCD1602, LCD2004, etc. May 7, 2023 · Just a guess. c. cols: the number of columns that the display has. This means that subsequent characters written to the display will go from right to left, but does not affect previously-output text. The display can be controlled using 4 or 8 data lines. (old lib is removed and new lib is in the '/arduino/libraries' directory) I tried as well with this : LiquidCrystal_I2C lcd(0x27,16,2,16); // set the LCD address to 0x27 for a 16 chars and 2 line display. Jan 13, 2022 · LiquidCrystal_I2C-linux. You can use any of Arduino’s digital pins to control the LCD. The only slight complexity is that you have to invoke the constructor of the base class LiquidCrystal_I2C liquidcrystal_i2c. Nov 27, 2015 · For all of the constructors in LiquidCrystal_I2C. lcd: a variable of type LiquidCrystal. Releases LiquidCrystal_I2C là một thư viện trong Arduino được sử dụng để giao tiếp với màn hình LCD thông qua giao thức I2C. Next I state that I am going to use RTC. The 1602 LCD can be used to display a simple message, display a sensor value (i. com 10 11//initialize the liquid crystal library 12//the first parameter is the I2C address 13//the second parameter is how many rows are on your screen 14//the third parameter is how many columns are on your screen 15 LiquidCrystal_I2C lcd(0x27, 16, 2); 16 17void setup() { 18 19 //initialize lcd screen 20 lcd. [함수 및 사용법] #include <LiquidCrystal_I2C. 0 Parameters lcd: a variable of type LiquidCrystal data: the character to write to the display Returns byte write()will return the number of bytes written, though reading that number is optional On the I2C module you will find a potentiometer that you can rotate with a small screwdriver. Display. This means that the library must know how the PCF8574 pins are wired up to be able to work. This has the effect of outputting Sep 17, 2015 · The library was updated according to TommiP requisitis and the problem is still alive in my configuration. With this library you can connect your I2C lcd to your linux box (using available GPIOs, but also via the I2C pins of your VGA port) and control it like you did with the C++ library. Read the documentation. La biblioteca permite controlar pantallas I2C con funciones extremadamente similares a la Jan 16, 2024 · You need to specify the I2C address of your LCD, along with the display dimensions, in the LiquidCrystal_I2C constructor. 5 (Windows 7), Board: "NodeMCU 1. Check it out to learn how the I2C LCD module works, how to use the LiquidCrystal_I2C library function to control it, change the I2C device address, connect multiple LCDs with Arduino using only 2 pins, and much more. RTC_DS1307rtc. Aug 25, 2020 · My LCD Model: 1602A with I2C (16x2) Like this one here. 7z) 2. You signed out in another tab or window. Только для LiquidCrystal_I2C_Menu. I2C LCD를 사용하기 위해 Arduino-LiquidCrystal-I2C-library-master라이브러리를 추가한다. This library is for character LCDs based on the HD44780 controller connected via I2C bus using the cheap I2C backpack modules based on the PCF8574 (T/A). h>. Connecting an I2C LCD is much simpler than connecting a standard LCD. Examples LiquidCrystal_I2C for Raspberry Pi Pico. LiquidCrystal I2C Arduino library, with added method for rewiring SCL and SDA on ESP32 - iakop/LiquidCrystal_I2C_ESP32 Start by connecting the VCC pin to the VIN on the ESP8266 and GND to ground. Step3. Then I create another object to call I2C LCD. LiquidCrystal_I2C(uint8_t lcd_addr,uint8_t lcd_cols,uint8_t lcd_rows, uint8_t charsize = LCD_5x8DOTS); * Set the LCD display in the correct begin state, must be called before anything else is done. // // The functionality provided by this class and its base class is Since you have an LCD with a I2C interface, you can look at the GitHub repo for the file LiquidCrystal_I2C. This implementation doesn't require any other external libraries. Search for “ LiquidCrystal I2C ” and install the “ LiquidCrystal I2C ” library in the Arduino IDE. 해당 주소는 통상 0x27 이다. 1602 LCD with Arduino - I2C and standard method explained. begin( 16, 2 ); This function sets the dimensions of the LCD. Dec 14, 2021 · Trong hướng dẫn này, tôi sẽ chỉ cho bạn cách thêm Thư viện I2C LiquidCrystal cho I2C LCD Display trong Arduino IDE#arduino #i2c #LiquidCrystal Nov 13, 2017 · I'm using 'LiquidCrystal I2C' library by Frank de Brabander. It is derived from the LiquidCrystal_I2C library as of 09. This is small and fast Arduino library for LCD HD44780 and its clones (S6A0069, KS0066U, NT3881D, LC7985, ST7066, SPLC780, WH160xB, AIP31066, GDM200xD). The second step is to add the libraries to your arduino ide, to do that you go to sketch-> include library -> add zip library then find it in files. Compatibility. I2C를 사용하기 전 반드시 주소를 확인해야 한다. Aug 1, 2023 · The hd44780 library should work on all architectures. 0 (ESP-12E Module), 80 MHz, 115200, 4M (3M SPIFFS)" WARNING: library LiquidCrystal_I2C claims to run on (avr) architecture(s) and may be incompatible with your current board which runs on (esp8266) architecture(s). If you’re utilizing a 16×2 character LCD, input 16 and 2; for a 20×4 character LCD, input 20 and 4. LiquidCrystal_I2C works in combination with the preinstalled Wire. We would like to show you a description here but the site won’t allow us. com/fdebrab Jun 20, 2017 · I2c backpacks are not all made the same way. The constructor does not initialize the LCD. In this tutorial, we will learn how to interface I2C LCD with Arduino and how to display static, scrolling, and custom characters on I2C LCD. Either add your user to the i2c group ( adduser <user> i2c ) or grant rights to anyone ( chmod 666 /dev/i2c-* ). Arduino I2C LCD. You only need to connect four pins. Download Library LCD (I2C) ก่อนครับ >> (ไฟล์ LiquidCrystal_I2C. Although some methods are named differently, the main concept is exactly the same. The library works with in either 4 or 8 bit mode (i. ESP8266 or ARUINO with 16x2 i2c adaptable to others, tested with ESP8266-12 (LoLin), ESP8266-01 and Arduino-Uno. If the current text direction is left-to-right (the default), the display scrolls to the left; if the current direction is right-to-left, the display scrolls to the right. This causes each character output to the display to push previous characters over by one space. En [in] LCD En (Enable) pin connected to the IO extender module. LiquidCrystal_AIP31068. rows: the number of rows that the display has. h. Author: Frank de Brabander. python-liquidcrystal_i2c needs read/write access to the i2c-bus. Within this file, you can see that the class is defined with name LiquidCrystal_I2C and has multiple constructors, each with a different list of parameters. The final “administrative” type of code you must include goes inside setup: void setup() {. The first option we'll show is how to use the I2C interface on the backpack. The library is available for download and installation through the library manager. The format is (COLUMNS, ROWS). link for liquid crystal here, link for wire here. Este tutorial es similar al Tutorial LCD, conectando tu Arduino a un LCD1602 y LCD2004 , con la pequeña diferencia que ahora utilizaremos un Módulo adaptador LCD a I2C. There are other backpacks using the same IC, but they assign different expander pins to the LCD. For printing multilingual UTF8 strings (French, Russian, Vietnamese, Katakana, etc. Возвращает значение типа eEncoderState (перечисляемый тип, описан в библиотеке как {eNone, eLeft, eRight, eButton}). begin(16, 2); } //close setup. If it works, you should get a message saying it worked. Address: 0x27 (Checked using I2C Scanning Code) The code: #include <Wire. begin() Dec 31, 2020 · Descripción. You will see the backlight lit up. Similarly, head over to Core > Src and create a new file called ‘liquidcrystal_i2c. jm_LiquidCrystal_I2C. The library allows to control AIP31068 based I2C/SPI displays with functions extremely similar to LiquidCrystal library. Contribute to sidreco214/LiquidCrystal_I2C_PICO development by creating an account on GitHub. This repository is a python port of the Arduino LiquidCrystal_I2C library. I use liquid crystal I2C, and wire. Wire. LiquidCrystal_I2C library helps in communicating with I2C LCD. I2C is nice because it only uses two pins, and you can put multiple I2C devices on the LiquidCrystal_PCF8574. This lcd. Here is the DS1307 and create an object called "rtc" for this device. Now as you turn the knob on the potentiometer, you will start to see the first row of rectangles. In the Topic dropdown, choose Displays and enter "hd44780" in the filter box. Compatibility Nov 11, 2019 · The first step is to find a working library of them. ino for you. temperature), or even display data pulled from the internet (i. My enhanced fm_LiquidCrystal_I2C Arduino Library. Oct 12, 2018 · The LiquidCrystal_I2C code does treat any non zero dimvalue as on since the backpack h/w can't do dimming but still using HIGH for a parameter is not correct. Contribute to jmparatte/jm_LiquidCrystal_I2C development by creating an account on GitHub. Begin by connecting the VCC pin to the Arduino’s 5V output and the GND pin to ground. The minimum timeout for the watchdog timer is 16ms. Now we are left with the pins which are used for I2C communication. The RW pin can be tied to ground instead of connected to a pin on the Arduino; if so, omit it from this function’s parameters. by Frank de Brabander. edited Apr 23, 2015 at 22:02. Now we are left with the pins that are used for I2C communication. @param lcd_Addr [in] I2C address of the IO expansion module. Curso de Arduino desde Cero - liquidcrystal Documentation, Release 0. h> #include <Wire. The object name is lcd. Maintainer: Matthias Hertel. cpp file of an Arduino sketch you must also include them in the master . Original Library Arduino-LiquidCrystal-I2C-library. */ LiquidCrystal_I2C (uint8_t lcd_Addr); // Constructor with backlight control LiquidCrystal_I2C (uint8_t lcd_Addr, uint8_t backlighPin, t_backlightPol pol Nov 23, 2022 · 1. THIS LIBRARY MIGHT NOT BE COMPATIBLE WITH EXISTING SKETCHES. En este tutorial aprenderemos a utilizar el Módulo adaptador de LCD a I2C y de esa forma poder controlar nuestro LCD Alfanumérico con solo dos pines de nuestro Arduino. ino. LiquidCrystal_I2C Library. LiquidCrystal I2C for MicroPython. Any. 보유하고 있는 I2C LCD의 경우 address가 0x3F 로 설정되어 있다. Mar 8, 2023 · #arduino #automation #lcd #i2c #fixed Video này mình sẽ giúp các bạn sửa lỗi trong khi sử dụng LCD và Arduino. LiquidCrystal I2C de arduino y descarga. Display numbers with convenient formats. LiquidCrystal I2C Arduino library, with added method for rewiring SCL and SDA on ESP32 - iakop/LiquidCrystal_I2C_ESP32 The liquidcrystal_i2c. * Optional argument i2c_bus gives the opportunity to use Wire1 instead of Wire on the Arduino models that have two I2C buses (such as the Arduino DUE) LiquidCrystal I2C. Mar 20, 2023 · Step 1: Install the library for LCD display in Arduino IDE. Driven with jm_Scheduler and jm_Wire. #include <RTClib. Doing this will ensure that only the known good library is in use. 8. Rs [in] LCD Rs (Reset) pin connected to the IO extender module. This is the ultimate guide for Arduino I2C LCD interfacing. This library is a port of the LiquidCrystal I2C Arduino library. It is github link of LiquidCrystal_I2C library. 3 Library LiquidCrystal_I2C Original Library Arduino-LiquidCrystal-I2C-library Standard for ESP8266 with pins 4-SDA 5-SCL or ARDUINO with A4-SDA A5-SCL and LCD 16x2 display and access from ESP8266: lcd. using 4 or 8 data lines in addition to the rs, enable, and, optionally, the rw control The LiquidCrystal_I2C library allows you to program an Arduino to print messages to an LCD screen using an I2C backpack. 단, 제조사별 혹은 구입루트에 따라 해당 채널 주소가 다를 수 있으므로 전원만 들어오고 LCD 의 첫째줄 라인이 사각형으로만 출력된다면 채널을 먼저 의심해 보아야 한다. The characters are alphanumeric, but you can create custom characters for basic graphics, bar graphs that Feb 1, 2019 · In this simple sketch we show you the most useful and important functions from the LiquidCrystal_I2C library. A library for I2C LCD displays. c‘ Copy the following code from this link and save it to this file. Connect the SDA pin to the ESP8266’s D2 (GPIO#4) and the SCL pin to the ESP8266’s D1 (GPIO#5). The 20×4 alphanumeric display is based on the Hitachi HD44780 driver IC. You can connect more than one display (each to its own pins) and create a separate LiquidCrystal objects for each. instead of. h' Does that means wire library is already included in LiquidCrystal_I2C library? So if we are writing code for any scenario where wire library is required( forexample using LCD with arduino through i2c scanner LiquidCrystal_I2C. The display operates in 4-bit mode over I²C bus with 8-bit I/O expander PCF8574/PCF8574A. e. #include <LiquidCrystal_I2C. Conversor lcd i2c. ino file. We'll be showing how to connect with an Arduino, for other microcontrollers please see our MCP23008 library code for the commands to send to the I2C I/O expander. Open Arduino IDE and navigate to Tools>Library Manager. Apr 10, 2015 · To use libraries in the . via I2C. If for some reason there is an issue on the R4, I'll fix it or work around it. The repo issue for the LiquidCrystal_I2C library is because of John Rickman. Step1 – Include the Arduino Core I2C wire library + LiquidCrysal I2C library as well. The library allows to control I2C displays with functions extremely similar to LiquidCrystal library. We use the begin () function from the library to pass the LiquidCrystal object the size of the LCD. Step 2: Import “ LiquidCrystal_I2C. h library in the Arduino editor. Rw [in] LCD Rw (Read/write) pin connected to the IO extender module. While a library called LiquidCrystal I2C by Frank de Barbander is in the Arduino library manager, even that library is not actually the original "LiquidCrystal_I2C" library A guy named Marco was the original developer of the LiquidCrystal_I2C library. See full list on makerguides. Feb 7, 2024 · The history of the original "LiquidCrystal_I2C" library is long and twisted. lcd. Look in the preferences in the IDE and verify that your sketchbook directory matches where you have created the "libraries" directory. Using the dimvalue of HIGH (which is typically a value of 1) would create a very dim backlight if the code were used with a different library and h/w that supported dimming like an LCD Jul 9, 2019 · You're using a different LiquidCrystal_I2C library than the one that you based your sketch on, and the constructor in the library you're using (what you're calling here: LiquidCrystal_I2C lcd(I2C_ADDR, En_pin, Rw_pin, Rs_pin, D4_pin, D5_pin, D6_pin, D7_pin); ) requires a different number of arguments than you've used. LiquidCrystal_I2C lcd(0x3F, 16, 2); Oct 18, 2016 · LiquidCrystal_I2C lcd(0x3F,16,2); 에서 0x3F 는 I2C 의 채널 주소이다. You could also use an inheritance model where the the base class is the original library LiquidCrystal_I2C and you simply create a new derived class, in this case LcdControl. begin(sda,scl) or ARDUINO: lcd. How to add a library for i2c LCD in Arduino: First, click on the sketch, in sketch dropdown list click on include library, when you click on include library a new dropdown list will be opened in that list simply click on add . (default: LCD_5x8DOTS) The Arduino programming language Reference, organized into Functions The first step is to find a working library of them. Automatically move down and pause when printing long text. This I2C LCD is a 16×2 device which means it can display 16 columns by two rows of characters. Step2 – Define an object of the LiquidCrystal_I2C and pass to it (the I2C device address, Num of cols in LCD, Num of rows in LCD) Step3 – Now, you can initialize the LCD in the setup function and turn ON its backlight LED. Nov 19, 2021 · Required libraries for 16×2 I2c lcd: LiquidCrystal_I2C. Maintainer: Adafruit. This library is compatible with all architectures so you should be able to use it on all the Arduino boards. 9% of all PCF8574 I²C backpacks available on the market are connected like LiquidCrystal lcd (RS, Enable, D4, D5, D6, D7) Create the LiquidCrystal object and specify the 6 pins where the LCD is connected. Wiring an I2C LCD Display to an Arduino. Vamos a conocer el módulo interfaz para la pantalla LCD donde podremos utilizar solamente dos pines para la comunicación entre cualquier microcontrolador y esta pantalla. How the code works. I2C address of the IO expansion module. I have also attached a snap of it and highlighted code line 24 which is `#include "Wire. This library allows an Arduino/Genuino board to control LiquidCrystal displays (LCDs) based on the Hitachi HD44780 (or a compatible) chipset, which is found on most text-based LCDs. Arduino can turn on way befer 4. LCD (Liquid Crystal Display) is typically used in embedded systems to display text and numbers for the end user as an output device. h> The next two lines set the number of columns and rows of your LCD display. Compatible with the Arduino IDE 1. LiquidCrystal Library for Arduino. We are going to use the default I2C pins (GPIO#4 and GPIO#5) of the ESP8266. using 4 or 8 data lines in addition to the rs, enable, and, optionally, the rw control lines). I2C is a communication protocol that allows you to communicate with multiple devices using only a few pins. 0. Credit You signed in with another tab or window. h library serves as a vital tool in facilitating this communication, particularly when interfacing I2C LCDs with microcontrollers like the STM32 Black Pill. Arduino: 1. // // The functionality provided by this class and its base class is Aug 28, 2015 · So now you need to confirm the location of your sketchbook directory. The original library has been reworked in such a way that // this class implements the all methods to command an LCD based // on the Hitachi HD44780 and compatible chipsets using I2C extension // backpacks such as the I2CLCDextraIO with the PCF8574* I2C IO Expander ASIC. I2C là một giao thức truyền thông hai dây cho phép các thiết bị giao tiếp với nhau một cách dễ dàng thông qua việc chia sẻ cùng một bus truyền dẫn. For more information about this library please visit us at. If that happens, Congratulations! Aug 27, 2012 · Arduino I2C Use. // enter the I2C address and the dimensions of your LCD here. shiftline November 29, 2015, 10:02am 3. 2017 ( commit e3701fb ). LiquidCrystal_I2C This is small and fast Arduino library for LCD HD44780 and its clones (S6A0069, KS0066U, NT3881D, LC7985, ST7066, SPLC780, WH160xB, AIP31066, GDM200xD). LiquidCrystal I2C Multilingual. Also, in this function, you need to specify the name of your LCD module, in this case, the name is lcd. The 16×2 alphanumeric display is based on the Hitachi HD44780 driver IC. begin (width, height); Initialize the display and set the size. h header file. Plug in the ESP32’s USB connector to power the LCD. Author: Matthias Hertel. Before installing LiquidCrystal_I2C, remove any other libraries that may reside in the Arduino IDE with the same LiquidCrystal_I2C name. Complicating matters is that there are multiple libraries that use a LiquidCrystal_I2C. Creates a variable of type LiquidCrystal. If the former, omit the pin numbers for d0 to d3 and leave those lines unconnected. You can add the includes manually or use the "Project>Add/Import Sketch Library" menu item which will add them to the . Author: Jean-Marc Paratte. h No such file or Directory | No matching function for 'LIQUIDCRYSTAL_I2C - ERRORLCD_l2C Library Package Link : https://github. So, let’s take a quick look at how the code works. Nov 29, 2020 · Только для LiquidCrystal_I2C_Menu. To include the library into the sketch you're working on, include the two libraries shown below at the top of your Jan 10, 2020 · Aprende a usar la interfaz LCD I2C con Arduino, donde únicamente vas a usar 2 PINES del Arduino para conectar una pantalla LCD. By abstracting the complexities of low-level I2C protocol implementation, this library streamlines the development process, allowing developers to focus on higher This is the ultimate guide for Arduino I2C LCD interfacing. The Arduino programming language Reference, organized into Functions, Variable and Constant, and Structure keywords. The 99. A library for AIP31068 I2C/SPI LCD displays. h> #include <LiquidCrystal_I2C. begin(); // initialize the lcd // Print a message to the LCD. h> LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display void setup() { lcd. // set up the LCD's number of columns and rows: lcd. Which is the small black circular chip on the back of the LCD module itself. link for liquid crystal here , link for wire here. . A library for driving LiquidCrystal displays (LCD) by using the I2C bus and an PCF8574 I2C adapter. This library allows an Arduino board to control liquid crystal displays (LCDs) based on the Hitachi HD44780 (or a compatible) chipset, which is found on most text-based LCDs. LiquidCrystal_I2C. Adafruit LiquidCrystal. STM32 Nucleo I2C LCD STM32CubeIDE Code. LiquidCrystal API compatible library for interfacing to "DFRobot", "YWRobot" and "SYDZ" type I2C 1602 backpacks using the PCF8574 I2C expander. Turns on automatic scrolling of the LCD. Different manufacturers wire the PCF8574 output port pins to the LCD in different ways. I think you will need to figure out how to change the address on one of your displays. Yes the sketchbook folder points to the root of the folder containing my sketch and the libraries folder. 3 Library LiquidCrystal_I2C. h ” header file in the code. ทำการแยกไฟล์ที่โหลดมาข้างต้น แล้วนำไปไว้ยัง C:\Program Files (x86)\Arduino\libraries (Drive ที่ได้ทำการติดตั้งโปรแกรม Jan 21, 2023 · LiquidCrystal_I2C _lcd1(0x27, 16, 2); LiquidCrystal_I2C _lcd2(0x27, 16, 2); I don't think you can use two I2C displays with the same I2C address. charsize (optional): the number of dots the display has per character: LCD_5x8DOTS for 5x8, LCD_5x10DOTS for 5x10. LiquidCrystal_I2C lcd(0x27,2,1,0,4,5,6,7); // 0x27 is the I2C bus address for an unmodified I2C なので基本的にプルアップが必要です。ここでは下記 LiquidCrystal_I2C ライブラリが内部で Wire ライブラリを利用していますが、これは SDA/SCL ピンについて、Arduino の内部プルアップ抵抗をアクティベートします。 Jan 7, 2021 · In this post we’ll go over how to use the 1602 LCD both the conventional way and with I2C. Go to repository. 5V so we'll wait 50 delay (50); // Now we pull both RS and R/W low to begin commands expanderWrite (_backlightval); // reset expanderand turn backlight off (Bit 8 =1) delay (1000); //put the LCD into 4 bit mode // this is according to the hitachi HD44780 datasheet // figure 24, pg 46 // we start in 8bit mode, try The LiquidCrystal_I2C () function sets the pins the Arduino uses to connect to the LCD. We will use I2C LCD library functions to display text and numbers on the I2C LCD, both in a static manner and a scrolling manner. Maintainer: Jean-Marc Paratte. I2C là một giao thức truyền thông duá mối dùng để kết nối các linh kiện điện tử với nhau thông qua ba pin: SDA (Data Line), SCL (Clock Line) và GND (Ground). For I2CLCDextraIO, the address can be configured using the on board jumpers. h on my system, the second and third parameters are EN and RW, ie, the enable and read/write backpack-pin numbers. Standard for ESP8266 with pins 4-SDA 5-SCL or ARDUINO with A4-SDA A5-SCL and LCD 16x2 display and Arduino LCD 20×4 I2C. Reload to refresh your session. Aug 10, 2017 · Architectures. weather info). I suggest trying constructor usage like. LiquidCrystal_I2C (uint8_t Set the direction for text written to the LCD to right-to-left (the default is left-to-right). You switched accounts on another tab or window. Control i2c lcd screens with a Raspberry Pi module with using PCF8574 I2C port expander Overview For use on a Raspberry Pi, raspberrypi-liquid-crystal is a node. h> Step2. init(); 21 // turn on the backlight 22 Mar 20, 2016 · LiquidCrystal_I2C It is the reimplementation of the standard Arduino LCD library, configured to work with parallel HD44780 compatible LCDs, and interfaced via a Chinese PCF8574 I2C serial extender. getEncoderState() – опрос состояния энкодера. First, you need to include the LiquidCrystal_I2C library. zip library as you can see in the below figure Thư viện Liquidcrystal_I2C là một thư viện phổ biến được sử dụng để điều khiển màn hình LCD giao tiếp I2C. dy rv tn gp zd cw sz cb rz ur