Problem with Arduino Delay Reading From Serial Port

[PerryBebbington]

@and_rfc

But I need to read this values every 1 or 5 seconds, and when I try to add a simple delay in this way:

That doesn't make sense, you need to read the data when it comes in, not at some arbitrary interval. Have you read this:

Serial Input Basics - updated

Updated Version Please note that this is a revised version of the advice in this earlier Thread which has become very long. As far as possible I have kept the code examples identical or simplifed them slightly. It should not be necessary to refer to the older Thread, but feel free to do so. Contents The following sections are in this Tutorial Introduction Serial data is slow by Arduino standards Example 1 - Receiving single characters Why code is organized into functions Exampl…

If not, I suggest you do, it is an excellent tutorial on how to do serial communications.

On a more general note using delay is asking for trouble because nothing else can happen while delay is delaying. Nothing. No reading a button, no updating a display, no turning an LED on or off. There are tutorials for this too.