Ben Meadors thebentern

This flow (and associated circuits/hardware) is designed to allow Node-RED to pass messages via radio waves in the same way as it passes messages via MQTT, using commonly-available, inexpensive handheld radios and the Raspberry Pi. The flow has been tested using Baofeng, Wouxun, and Quansheng handheld ham radios. In short, the goal is to allow packet-like transmissions between Node-RED systems over miles, while keeping the hardware costs down (or free for those hams who have surplus Baofengs hanging around). This could be used for a backup to MQTT when the Wifi is unreliable, or simply as a long-distance and network-agnostic message channel.

Prerequisites: Software

First, we need PulseAudio to make and receive sounds with our USB soundcard:

sudo apt-get install pulseaudio -y

Use these rapid keyboard shortcuts to control the GitHub Atom text editor on macOS.

Key to the Keys

⌘ : Command key
⌃ : Control key
⌫ : Delete key
← : Left arrow key
→ : Right arrow key
↑ : Up arrow key

	var gulp = require('gulp'),
	msbuild = require('gulp-msbuild'),
	githubRelease = require('gulp-github-release'),
	zip = require('gulp-zip'),
	series = require('run-sequence'),
	fs = require('fs');

	gulp.task('build', function () {
	return gulp.src('./SOLUTION_NAME.sln')
	.pipe(msbuild({

	/*
	* homodyne.ino: Homodyne detection of a 1 kHz signal.
	*
	* This program continuously samples analog input 0 and uses an homodyne
	* detection scheme to identify a signal at 1 kHz (+/- 24 Hz @ -3dB).
	*
	* The analog-to-digital converter is set to "free running mode" and
	* takes one sample every 104 us. The samples are multiplied by two
	* generated signals at 1 kHz (the "local oscillator"), in quadrature to
	* one another. The products are then low-pass filtered with a time

	if $(ConfigurationName) == Release (
	nuget pack "$(ProjectDir)$(ProjectName).nuspec"
	xcopy "$(TargetDir)*.nupkg" "C:\LocalNuget" /y
	) ELSE (
	echo "Skipping nuget pack"
	)

	/*
	* Demonstrate using an http server and an HTML form to control an LED.
	* The http server runs on the ESP8266.
	*
	* Connect to "http://esp8266WebForm.local" or "http://<IP address>"
	* to bring up an HTML form to control the LED connected GPIO#0. This works
	* for the Adafruit ESP8266 HUZZAH but the LED may be on a different pin on
	* other breakout boards.
	*
	* Imperatives to turn the LED on/off using a non-browser http client.

	var gulp = require('gulp');
	var bower = require('gulp-bower');
	var del = require('del');
	var project = require('./project.json');
	var lib = project.webroot + '/lib';

	gulp.task('default', ['bower:install'], function () {
	return;
	});

	var gulp = require('gulp');
	var bower = require('gulp-bower');
	var less = require('gulp-less');
	var sourcemaps = require('gulp-sourcemaps');
	var aspnetk = require("gulp-aspnet-k");
	var imagemin = require('gulp-imagemin');
	var pngquant = require('imagemin-pngquant');
	var gutil = require('gulp-util');
	var plumber = require('gulp-plumber');
	var colors = require('colors');

	<#
	This function can be used to pass a ScriptBlock (closure) to be executed and returned.

	The operation retried a few times on failure, and if the maximum threshold is surpassed, the operation fails completely.

	Params:
	Command - The ScriptBlock to be executed
	RetryDelay - Number (in seconds) to wait between retries
	(default: 5)
	MaxRetries - Number of times to retry before accepting failure

	public static ExpandoObject ToExpando(this object obj)
	{
	IDictionary<string, object> expando = new ExpandoObject();
	foreach (var info in obj.GetType().GetProperties())
	expando.Add(new KeyValuePair<string, object>(info.Name, info.GetValue(obj)));
	return (ExpandoObject)expando;
	}