https://github.com/hardillb/node-red-contrib-powermate

https://github.com/hardillb/node-red-contrib-powermate

Last synced: about 2 months ago
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• Host: GitHub
• URL: https://github.com/hardillb/node-red-contrib-powermate
• Owner: hardillb
• Created: 2014-06-26T08:37:38.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2017-04-01T17:35:18.000Z (almost 8 years ago)
• Last Synced: 2024-11-15T21:08:26.384Z (about 2 months ago)
• Language: HTML
• Size: 6.84 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
PowerMate

=========

A Node-Red node to read from the [Griffin PowerMate](http://www.amazon.co.uk/gp/product/B003VWU2WA/ref=as_li_ss_tl?ie=UTF8&camp=1634&creative=19450&creativeASIN=B003VWU2WA&linkCode=as2&tag=bespl-21)

Install

-------

Run the following command in the root directory of your Node-RED install

	npm install node-red-contrib-powermate

Usage

-----

This node outputs messages for 3 different events

 + Button down

 + Button up

 + Wheel rotation

For the first 2 the message payload of 'up' or 'down' respectively is published to the topic + '/button'. For the wheel rotation the message payload is +ve for clockwise and -ve for anti-clockwise on the topic + '/wheel'

Permissions

-----------

Depending on OS, you may get an error that looks something like 

    cannot open device with path 0001:0004:00

    

If this happens, it is likely because your user doesn't have permissions for the PowerMate device. In Linux (specifically Raspbian), creating the file /etc/udev/rules/95-powermate.rules and entering the following text:

    SUBSYSTEM=="usb", ATTRS{idVendor}=="077d", ATTRS{idProduct}=="0410", SYMLINK+="powermate", MODE="660", GROUP="input"

will assign the PowerMate device to the "input" group, which the pi user belongs to. For other OSs, change the GROUP entry to a group that your user belongs to.