I2C / IIC LCD Display | Convert a SPI LCD to the I2C LCD Display

About: I am an engineering student and i just love doing electronic (mcu's) and programming (C,C++,JAVA) based projects.

using spi lcd display needs too many connections to do which is really hard to do so i found a module which can convert the i2c lcd to the spi lcd so let's get started.

Step 1: Get the I2C LCD Module and Other Parts

first of all you need to get the I2C module , LCD display and arduino You can get everything from the given affiliate links-

LCD Display - https://www.banggood.com/1Pc-1602-Character-LCD-Display-Module-Yellow-Backlight-For-Arduino-p-978155.html?p=LU070313923481201709

for india- https://www.amazon.in/gp/product/B00XT53RI0/ref=as_li_qf_asin_il_tl?ie=UTF8&tag=ele0f1-21&creative=24630&linkCode=as2&creativeASIN=B00XT53RI0&linkId=2709e8e6082144c744620e85c8d1fe57

Arduino Uno- https://www.banggood.com/UNO-R3-ATmega328P-Development-Board-For-Arduino-No-Cable-p-964163.html?p=LU070313923481201709


(for india) -


I2C module for LCD - https://www.banggood.com/IIC-I2C-TWI-SP-Serial-Interface-Module-Port-For-5V-Arduino-1602LCD-p-80365.html?p=LU070313923481201709

for india- https://www.amazon.in/gp/product/B071JRMRB8/ref=as_li_qf_asin_il_tl?ie=UTF8&tag=ele0f1-21&creative=24630&linkCode=as2&creativeASIN=B071JRMRB8&linkId=090f5b29fcb373a1c4fc1cb75273c893

Jumper wires - https://www.banggood.com/3-IN-1-120pcs-10cm-Male-To-Female-Female-To-Female-Male-To-Male-Jumper-Cable-Dupont-Wire-For-Arduino-p-1054670.html?p=LU070313923481201709

for india -


Digispark Attiny 85 Board - https://www.banggood.com/Digispark-Kickstarter-Micro-USB-Development-Board-For-ATTINY85-Arduino-p-1038088.html?p=LU070313923481201709

for india - https://www.amazon.in/gp/product/B00Z09R3YC/ref=as_li_qf_asin_il_tl?ie=UTF8&tag=ele0f1-21&creative=24630&linkCode=as2&creativeASIN=B00Z09R3YC&linkId=6c22922d8b688ac4b2497bc923f13764

Step 2: Plug the Module to the Display

so plug the module on the back of the display as shown in image and for more precise idea of how to do that please refer video.

Step 3: Install the Libraries

for the i2c lcd download the given library and paste it in libraries folder of arduino as shown in image


Step 4: Get the Address of I2c Display

So to get the i2c address of i2c display just connect the lcd to Arduino as given -

Lcd. Arduino

SDA. >. A4(sda)

SCL. >. A5(scl)

Vcc. >. 5V

Gnd. >. Gnd

Then upload the code i2c scanner to the arduino


then open the serial monitor and you'll find your i2c address on serial monitor as mine is 0x27

Step 5: Upload the Code

go to examples then under arduino liquid crystal i2c library you'll find hello world code and just change the i2c address with the address you got by i2c scanner and upload the code and hello world will be printed on the screen.

If having problem refer video.

Thanks you.



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