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Tidy Arduino - make it use integers.

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plus slight tidy of docs
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Dave Conway-Jones
2016-01-31 23:27:10 +00:00
parent 90878364ac
commit d457b68941
4 changed files with 25 additions and 18 deletions
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hardware/Arduino/README.md
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@@ -1,20 +1,17 @@
node-red-node-arduino
=====================
A <a href="http://nodered.org" target="_new">Node-RED</a> node to talk to an Arduino running firmata.
**Note** : This is the same node as was in the core of Node-RED.
As of v0.10.8 you will need to install it from here if still required.
A <a href="http://nodered.org" target="_new">Node-RED</a> node to talk to an
Arduino running standard firmata 2.2 or better.
Install
-------
Run the following command in the root directory of your Node-RED install, usually
this is ~/.node-red .
this is `~/.node-red`
npm install node-red-node-arduino
Usage
-----
@@ -23,23 +20,33 @@ The Firmata firmware must be loaded into the Arduino.
See the [main documentation](http://nodered.org/docs/hardware/arduino.html) for
details and examples of how to use this node.
###Input Node
### Input Node
Connects to local Arduino and monitors the selected pin for changes.
You can select either Digital or Analogue input. Outputs the value read as **msg.payload** and the pin number as **msg.topic**.
You can select either **Digital** or **Analogue** 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 in ms from 20 to 65535.
You can set the sample rate from `20` to `65535` mS.
###Output Node
### Output Node
Connects to local Arduino and writes to the selected pin.
You can select Digital, Analogue (PWM) or Servo type outputs. Expects a numeric value in **msg.payload**. The pin number is set in the properties panel.
You can select
###Example
- **Digital** - accepts 0, 1, true, false, on, off
- **Analogue** (PWM) - accepts Integer 0 to 255
- **Servo** - accepts Integer 0 - 180
Expects a numeric value in **msg.payload**. The pin number is set in the properties panel.
*Note* - some servos will not travel a full 180 degree range so may only accept 30 - 150 degrees for example.
Please use the `range` node to scale the input appropriately.
### Example
Simple flow to blink Pin 13