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projects:lcd_module [2012/07/01 11:50] elger |
projects:lcd_module [2013/02/23 09:59] 127.0.0.1 external edit |
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{{ :projects:sainsmart_iic-i2c-twi_serial_2004_20x4_lcd_back.png?200|}} | {{ :projects:sainsmart_iic-i2c-twi_serial_2004_20x4_lcd_back.png?200|}} | ||
- | My display has a PCB on the back labled "YwRobot Arduino LCM1602 IICV1" but it appears it is the same as the the one of [[http://www.sainsmart.com/sainsmart-iic-i2c-twi-serial-2004-20x4-lcd-module-shield-for-arduino-uno-mega-r3.html|sainsmart.com]] | + | My display has a PCB on the back labled "YwRobot Arduino LCM1602 IIC V1" but it appears it is the same as the the one of [[http://www.sainsmart.com/sainsmart-iic-i2c-twi-serial-2004-20x4-lcd-module-shield-for-arduino-uno-mega-r3.html|sainsmart.com]] |
The only difference is the text on the back. | The only difference is the text on the back. | ||
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===== The software ===== | ===== The software ===== | ||
- | <page is being edited> | + | You need to remove the standard liquidcrystal library, rename the old folder to something else. You can read [[http://www.arduino.cc/playground/Code/Library|here]] how to replace a library. |
- | <file cpp i2c_display.ino> | + | Next you need to install the liquidcrystal library that works. I found mine here: |
+ | [[https://bitbucket.org/fmalpartida/new-liquidcrystal/downloads| fmalpartida/new-liquidcrystal]] | ||
+ | And there is also lots more information on the library [[https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home|here]] | ||
+ | |||
+ | I used their examples and came up with this little demo: | ||
+ | |||
+ | <code cpp i2c_display.ino> | ||
/* | /* | ||
** Example Arduino sketch for SainSmart I2C LCD2004 adapter for HD44780 LCD screens | ** Example Arduino sketch for SainSmart I2C LCD2004 adapter for HD44780 LCD screens | ||
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** The LCD2004 module appears to be identical to one marketed by YwRobot | ** The LCD2004 module appears to be identical to one marketed by YwRobot | ||
** | ** | ||
- | ** Address pins 0,1 & 2 are all permenantly tied high so the address is fixed at 0x27 | + | ** Address pins 0,1 & 2 are all permanently tied high so the address is fixed at 0x27 |
** | ** | ||
** Written for and tested with Arduino 1.0 | ** Written for and tested with Arduino 1.0 | ||
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} | } | ||
- | </file> | + | </code> |