edgar-bonet

/*
 * 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

tymarbut

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

thebentern

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

bbx10

/*
 * 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.

chrissimpkins

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

spboyer

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;
});

ctolkien

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');

alexbevi

<#
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

kjlape

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;
}

jsnape

open System
open System.Reflection
open System.Collections.Generic
open System.Data
open System.Linq
open System.Linq.Expressions

type private accessor<'T> = { Index: int; Name: string; Getter: 'T -> obj }

/// IEnumerable to IDataReader wrapper class