Turbourpo
commented
2 years ago I did not check the attached zip-files. But I had similar issues way back - if my memory servers me right, the I2C address was hard coded to the lcddriver.py file which is located under the ./node-red/node_modules/node-red-contrib-lcd20x4-i2c/LCD20x4-I2C/ path.
Check that the I2C address is the same as in your working python script or run some kind of python test script to list the connected I2C devises. For me this setting did the trick:
# LCD Address
ADDRESS = 0x3FThis was the default setting in the installed file:
# LCD Address
ADDRESS = 0x27
tatuiot
Hi There, I am posting this topic here as last resource because I have not been able to find a solution to the problem.
I have installed all the dependancy.
I have tested the lcd with a python script on I2C and it is working. The files I have used to test it are also attached. TestFiles.zip
I have used a flow already tested by other successful buddies.
Still I cannot get any message on the LCD using the node-red-contrib-LCD20x4-I2C. I am under the impression that the node is not working. My os: PRETTY_NAME="Raspbian GNU/Linux 10 (buster)" NAME="Raspbian GNU/Linux" VERSION_ID="10" VERSION="10 (buster)" VERSION_CODENAME=buster ID=raspbian ID_LIKE=debian
My test flow is attached. Nodered-LCD_flow.zip
The idea to use your node to drive the LCD is very nice. I would appreciate some support to understand the issue I don't know what else to check.