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clean up arduino node readme. Add hint re rate limit or rbe.

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Dave Conway-Jones
2018-05-13 17:26:32 +01:00
parent dca9dfccc1
commit a3d4f01587
5 changed files with 178 additions and 60 deletions
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1
hardware/Arduino/35-arduino.html
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@@ -28,6 +28,7 @@
<p>The Arduino must be loaded with the Standard Firmata sketch available in the Arduino examples.</p>
<p>You can select either Digital or Analogue input. Outputs the value read as <code>msg.payload</code> and the pin number as <code>msg.topic</code>.</p>
<p>It only outputs on a change of value - fine for digital inputs, but you can get a lot of data from analogue pins which you must then handle.</p>
<p>For example you could use a <code>delay</code> node set to rate limit and drop intermediate values, or an <code>rbe</code> node to only report when it changes by a certain amount.</p>
</script>
<script type="text/javascript">

8
hardware/Arduino/35-arduino.js
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@@ -33,8 +33,8 @@ module.exports = function(RED) {
if (node.board) {
try {
node.board.sp.close(function() {
done();
if (RED.settings.verbose) { node.log(RED._("arduino.status.portclosed")); }
done();
});
}
catch(e) { done(); }
@@ -93,9 +93,6 @@ module.exports = function(RED) {
}
if (node.board.isReady) { doit(); }
else { node.board.on("ready", function() { doit(); }); }
node.on("close", function() {
if (node.tout) { clearTimeout(node.tout); }
})
}
else {
this.warn(RED._("arduino.errors.portnotconf"));
@@ -155,9 +152,6 @@ module.exports = function(RED) {
}
if (node.board.isReady) { doit(); }
else { node.board.on("ready", function() { doit(); }); }
node.on("close", function() {
if (node.tout) { clearTimeout(node.tout); }
})
}
else {
this.warn(RED._("arduino.errors.portnotconf"));

4
hardware/Arduino/README.md
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@@ -26,9 +26,7 @@ Connects to local Arduino and monitors the selected pin for changes.
You can select either **Digital**, **Analogue**, or **String** input type.
Outputs the value read as `msg.payload` and the pin number as `msg.topic`.
It only outputs on a change of value - fine for digital inputs, but you can get a lot of data from analogue pins which you must then handle.
You can set the sample rate from `20` to `65535` mS.
It only outputs on a change of value - fine for digital inputs, but you can get a lot of data from analogue pins which you must then handle. For example you could use a `delay` node set to rate limit and drop intermediate values, or an `rbe` node to only report when it changes by a certain amount.
### Output Node

2
hardware/Arduino/package.json
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@@ -1,6 +1,6 @@
{
"name" : "node-red-node-arduino",
"version" : "0.0.16",
"version" : "0.0.17",
"description" : "A Node-RED node to talk to an Arduino running firmata",
"dependencies" : {
"firmata" : "~0.19.1"