"pulse on change"/uart print question

1

Sorry for the noob question, but here goes:
I read analog in. I then want to send that value via the “uart print” node. I only want to send on a change, so it’s not constantly sending.

I i get analog out, I then connect that to “pulse on change”. And then connect that to “send” on the uart print node.
The problem is that those 2 data types dont work together. Whenever I run and debug this, the “Print” node turns red and doesnt send any more.
What can I do? I have tried using a buffer node and comparing the 2 numbers and then doing a pulse on not true (the compare) but that makes my whole system unstable for some reason. Thanks

2

Please send a sample of your patch so we can see what’s wrong.

3

pulse-on-change output pin and xod/uart/print-SEND pin are both type pulse, so they can be connected. You should be able to use something like this:

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The value you want is sent to DATA pin. When that value changes, a pulse is sent to the SEND pin.

4

Thanks for getting back to me :slight_smile:
What you are suggesting is actually what i’m doing.

If I do this:

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The watch nodes just stick on “watch” and nothing ever changes. If I delete the uart nodes, everything starts to count correctly. It’s as if adding uart just destroys everything. I’m using an arduino micro.
Thanks!

5

I tried with usb-uart node instead, but that gives me an error on upload. Don’t understand why, since it’s an arduino micro which should be able to do this.

6

(post deleted by author)

7

Got it solved by using uart 1 :slight_smile: (though uart-usb doesnt work. I have made a seperate thread for that, because I really need to use that).

8

Yeah…debug is probably using uart, so you can’t have uart node and use debug for watch nodes.