I am trying to understand how to get pin data from Particle to a web page using particle.publish. When the pin is HIGH, I want the variable “result” to contain the data “open”, and so forth. However, when I run “particle list” from the cli, the device is listed but no variables, so I assume somethi…

Particle.publish() does not “create” a Particle.variable(). It just publishes an event that can be Particle.subscribe()d to or subscribed by any other means like JS. If you want a requestable variable you need to do this int pin = D0; char state[16]; void setup() { Particle.variable("pinState",…

There’s nothing wrong with your Particle.publish statements (see note below), but as @ScruffR said, they don’t create a Particle.variable, so you can’t see them in the CLI that way. If you want to see the results of your publishes in the CLI, type in, particle subscribe mine . This will allow you t…

To expand on the logic of the original post. The conditions don’t make a lot of sense. Since digitalRead() will never ever have any other result than HIGH or LOW the else branch would not make any sense at all, but since the two if() statements are not linked correctly this else branch will even p…

That was great help. Now that I can see the contents of a variable using “particle get” from the CLI, is there a simple means to access the contents of the variable using HTML? Unless I misunderstand, the particle API can work with REST. So I tried the following statement in my HTML. <script> ge…

There already is a tutorial for that [image] Reading Spark Variables with Your Own HTML File Tutorials If you have seen my Spark.publish() tutorials, you know that I like to have private web pages (since if it was public, your access token would be exposed) that read and e…

I struggled with very similar code most of the day yesterday only to discover the problem wasn’t with my code. Every time I did a digital read the result was coming back HIGH… no matter what. I was starting to think I’d fried my chip… then I added a 10 kohm pull down resistor and my problems were so…

You can also set the pinMode to INPUT_PULLDOWN, so you don’t need an external resistor (usually). The internal resistor is around 40k, and sometimes you need a stronger pulldown than that, but the internal one has always worked for me.

I noticed INPUT_PULLDOWN as one of the options in the pinmode command online documentation, but there was no discussion of its intended use. The name implies it has something to do with the pulldown resistor… but no documentation that I could (quickly) find. I’ll give it a try… one less component to…

Trying to understand how to use particle.publish

Getting Started

ScruffR April 9, 2017, 5:23am 6

There already is a tutorial for that

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Trying to understand how to use particle.publish

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