While pointing out the search options for another member looking to write to an LCD, I decided to try it myself. I setup a Sainsmart 2004 LCD with I2C backpack onto my RPi. Tested it with some Python code... yes, my setup is a bit "how ya doin" but it clearly is working :slight_smile: [image] N…

And to bring this topic's initial start back to full MID circle... tek79 came out with a V2 of his contrib - GitHub - tek79/node-red-contrib-i2clcd-alt at v2 [{"id":"1bac6e76.a8fcc2","type":"tab","label":"Flow 1","disabled":false,"info":""},{"id":"52127114.471f9","type":"i2clcd-alt","z":"1bac6e76.…

[image] Gunner: so I will have to do some Googling to find the correct way to import, whatever it needs. Turns out I just need the paho anyhow... as it is the client, doh!

Just have to redo them both with pip3 :stuck_out_tongue:

Alas a lot has happened here since I did that. Maybe a year or so. If you have a script that works, maybe I would suggest you build on that; as you have a better understanding of what is going on. Mine is ok and it does work and allows a lot of control. But I don't know if it will meet all you…

[image] Trying_to_learn: If you have a script that works, maybe I would suggest you build on that Yes, probably best... as it appears on top of everything else, you have a RGB backlit LCD, mine is poor old white on blue :slight_smile: so lots of commands to cut out.

No problems. But it may be handy to look at and maybe get something useful. All the best.

I think it was written for a specific chip set. But I can't be sure. I think I lost a lot of time trying to get it working and finally gave up and wrote that script I showed you. (Well, ok: I got someone else to write the basics and I tweaked it to fit my needs)

[image] Gunner: [image] with actual text being... This should be set to json, then you can see it in the json editor. Also msg, msgs, pos and center should be surrounded by " " eg. "msg" And "false" should be false

Could you paste the message for me? Mine works a bit better and I would be interested if I can get it working via the node - just as a curiosity.

[image] Trying_to_learn: I think it was written for a specific chip set. Specific LCD module - SparkFun Qwiic Serial LCDs - I don't have that, mine is old skool Oh well... back to the node testing :crazy_face:

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Trying to send text to LCD over i2c contrib

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Gunner 1 July 2021 06:00 36

I still want to figure out these nodes... but now also having something to work on for running python scripts is good as well for future stuffs.

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Trying to send text to LCD over i2c contrib

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