hi guys, I’m new to xod and i have a a problem concerning a i2c lcd. “project”: the lcd displays a message, when a button is pushed the message is whiped and a new message is displayed on the lcd. How can i achieve this? i can’t find a clear screen node, the attempts i made resulted in the 2 mess…

oooh i din’t see that i could expand this node, thank you so much!

i’m very sorry to bother you again, would you mind drafting it up and posting it here? I’m an absolute beginner when it comes to coding and i can’t seem to figure it out :frowning:

[arduino] this is what i have so far… the first message is displayed, but when the button is being pressed nothing is happening…

I would expect “test page 2” is always shown… I think the button is not being read at all. Do you set up its PORT correctly? Also, does it have a pull-up resistor in hardware? Anyway, to change the message on button click, link the PRS output to S2, not DONE.

hi nkrkv, Yes, when selecting the node for the button i put in the correct port no. And i pulled it up with a 10K resistor. After changing the output to prs it still doesn’t work… Any suggestions?

Could you add a watch on PRS and run with debugger to verify the button is indeed sends correct boolean signals?

the debugger show’s no data, just “debug session started”

try this,with DONE to s2 also works [lcd-]

cesar. what deferen, betwen node select and 4051multiplexer

In the select node, you will need a pulse to select each channel(x1,x2,x3…), in 4051 the selection is numeric by SEL(0 = CH0, 1 = CH1 .... [image]

I2c lcd 16x2, message switch via button

microbios75 August 21, 2019, 11:25am 25

Maybe this could help you? I don’t know if that’s what you’re looking for exactly.

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I2c lcd 16x2, message switch via button

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