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How to connect I2C 20*4 LCD with Orange Pi Zero3?


bjan04

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Hi there, recently I bought an Orange Pi Zero3 with 1GB RAM. I want to connect a 20*4 character LCD display(https://www.tinytronics.nl/en/displays/lcd/lcd-display-20*4-characters-with-white-text-and-blue-backlight-with-i2c-backpack) to it. I have previously used this display with Arduino UNO, which worked great. Now I want to use it with the Orange Pi Zero3 (Ubuntu 24.04). I have no experience with the Orange Pi or single-board computers in general. I followed some tutorials, but I couldn't make it work. 

I did this:

 

Wiring:
 

I2C Backpack Orange Pi Zero3
VCC Pin 2
GND Pin 6
SCL Pin 5
SDA Pin 3

 

 

Terminal:

sudo apt-get install -y python-smbus i2c-tools

user@orangepizero3:~$ sudo i2cdetect -y 0

0 1 2 3 4 5 6 7 8 9 a b c d e f

00: -- -- -- -- -- -- -- -- -- -- -- -- --

10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

40: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- --

50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

70: -- -- -- -- -- -- -- --

 

user@orangepizero3:~$ sudo i2cdetect -y 1

0 1 2 3 4 5 6 7 8 9 a b c d e f

00: -- -- -- -- -- -- -- -- -- -- -- -- --

10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

30: 30 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

40: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- --

50: 50 -- -- -- 54 -- -- -- -- -- -- -- -- -- -- --

60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

70: -- -- -- -- -- -- -- --

 

 

It seems like the display cannot be found. How can I fix this?

Edited by bjan04
Added wiring details
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