Dave Conway-Jones dceejay

#Read UK Power Demand

Uses the web service from the National Grid to fetch the current overall UK Electricity Demand.

    http://realtimeweb-prod.nationalgrid.com/SystemData.aspx

The reponse is then parsed into two parts.

The first is an object containing the power in MW and the operating frequency in Hertz
The second is true/false depending if that frequency is above 50Hz.

Range Node Tester

Simple example to exercise the range node...

These instructions assume you installed Node-RED from an administrator enabled command prompt using the npm install -g node-red command to do so.

As an administrator, install nssm from https://nssm.cc/download

And then from the directory where you installed nssm, run the commands

mkdir c:\temp

nssm install Node-RED "c:\Users\"%USERNAME%"\AppData\Roaming\npm\node-red.cmd"

This example uses an external program and 2 non-core nodes.

dump1090 - the awesome ADS-B program from @antirez - https://github.com/antirez/dump1090

worldmap node - http://flows.nodered.org/node/node-red-contrib-web-worldmap

daemon node - http://flows.nodered.org/node/node-red-node-daemon

The Daemon node runs dump1090 --net in the background. If you don't want to install this node then you can just run it in a separate window.

	# Dockerfile for Node-RED - pulls latest master code from git
	# Use the node.js v4 LTS engine
	FROM node:4-slim
	MAINTAINER ceejay

	RUN mkdir -p /root/.node-red
	WORKDIR /root/.node-red

	# download latest stable node-red
	RUN npm install -g --unsafe-perm node-red

	#! /bin/bash
	### This is for Pi Version 2 ONLY
	### Once it completes Node-RED should be ready to run...
	### To do this all in one command... copy and paste just the following command
	### curl -sL https://gist.githubusercontent.com/dceejay/ab527322584c3600f293/raw/ \| bash -

	cd ~
	curl -sL https://deb.nodesource.com/setup \| sudo bash -
	sudo apt-get install -y build-essential python-dev python-rpi.gpio nodejs
	node -v

	#! /bin/bash
	### This is for Pi Version 1 ONLY
	### Once it completes Node-RED should be ready to run...
	### To do this all in one command... copy and paste just the following command
	### curl -sL https://gist.githubusercontent.com/dceejay/250502b143efcdc57fed/raw/ \| bash -

	cd ~
	sudo apt-get update && sudo apt-get install -y build-essential python-dev python-rpi.gpio
	wget http://node-arm.herokuapp.com/node_0.10.36_armhf.deb
	sudo dpkg -i node_0.10.36_armhf.deb

	#include <Adafruit_NeoPixel.h>

	#define PIN 4
	int led = 13;

	// Parameter 1 = number of pixels in strip
	// Parameter 2 = pin number (most are valid)
	// Parameter 3 = pixel type flags, add together as needed:
	// NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
	// NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)

	#!/bin/bash
	# Rebuild Pi kernel

	sudo apt-get -y update
	sudo apt-get -y dist-upgrade
	sudo apt-get -y install gcc make bc ncurses-dev build-essential git
	sudo apt-get -y autoremove --purge
	sudo apt-get -y autoclean

	git clone --depth 1 git://github.com/raspberrypi/linux.git