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mirror of https://github.com/node-red/node-red-nodes.git synced 2023-10-10 13:36:58 +02:00
node-red-nodes/hardware/unicorn
2016-01-11 21:23:23 +00:00
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scripts Add Pi Unicorn Hat node 2016-01-11 21:23:23 +00:00
LICENSE Add Pi Unicorn Hat node 2016-01-11 21:23:23 +00:00
package.json Add Pi Unicorn Hat node 2016-01-11 21:23:23 +00:00
README.md Add Pi Unicorn Hat node 2016-01-11 21:23:23 +00:00
unicorn.html Add Pi Unicorn Hat node 2016-01-11 21:23:23 +00:00
unicorn.js Add Pi Unicorn Hat node 2016-01-11 21:23:23 +00:00
unihat Add Pi Unicorn Hat node 2016-01-11 21:23:23 +00:00
unihat.py Add Pi Unicorn Hat node 2016-01-11 21:23:23 +00:00

node-red-node-pi-unicorn-hat

A Node-RED node to output to a Raspberry Pi Unicorn HAT from Pimorini.

Pre-requisites

The Unicorn HAT python drivers need to be pre-installed... see the <a "href=http://learn.pimoroni.com/tutorial/unicorn-hat/getting-started-with-unicorn-hat"> Pimorini Getting Started with Unicorn HAT page.

curl -sS get.pimoroni.com/unicornhat | bash

Install

Run the following command in the root directory of your Node-RED install. Usually this is ~/.node-red

npm install node-red-node-pi-unicorn-hat

Usage

The background of the array can be configured using an 8x8 pixel sized png image, or by specifying a single colour using an r,g,b triple.

The brightness can also be set in the configuration. Defaults to 20% so as not to blind you.

A pixel is set by msg.payload with a CSV string x,y,r,g,b , where x and y are 0 to 7, and r, g and b are 0 - 255. If x or y are set to * then the complete row or column can be set. Setting both x and y to * fills the background.

The background can also be set to a colour by setting msg.payload to an r,g,b triple.

Any msg with a msg.topic identifies a 'sprite' pixel, which can then be moved independently of the background.

Setting msg.payload to 0 will delete the sprite from the list.

Setting msg.payload to DEL delete any sprites - leaving the background.

Setting msg.payload to CLS will clear the display to off and delete any sprites.

The overall brightness may be set by setting msg.payload to brightness,nn, where nn is 0 to 100.

The rotation may be set by setting ••msg.payload•• to 'rotate,rr', where 'rr' is 0, 90, 180 or 270.