jscrane

#include <SoftwareSerial.h>
#include <RF24Network.h>
#include <RF24.h>
#include <SPI.h>
#include <EEPROM.h>

RF24 radio(2, 3);
RF24Network network(radio);

const int rx = 1, tx = 0;

jscrane

Counting
------------

**Permutations**
$n! = n(n-1)(n-2) ... 1$

**k-Permutations**
$\frac{n!}{(n-k)!}$

**Combinations**

jscrane

import sys
import scipy.sparse as sps
import numpy as np

nodes = 1000000
beta = 0.8
eps = 1e-6

V = set()
degs = {}

jscrane

#include <Interrupted.h>

#define LED     0
#define TIMER   1
#define BUTTON  2

Watchdog timer(TIMER, 1);
External button(BUTTON, LOW);
PinChangeGroup portb;
PinChange led(LED, portb); 

jscrane

#include <math.h>

#define THERMISTOR 7
#define SWITCH 1
#define A_PIN 4

const double beta = 3977.0;
const double zeroC = 273.15;
const double tzero = 25 + zeroC;

jscrane

########################################################################
#
# Arduino command line tools Makefile
# System part (i.e. project independent)
#
# Copyright (C) 2010 Martin Oldfield <m@mjo.tc>, based on work that is
# Copyright Nicholas Zambetti, David A. Mellis & Hernando Barragan
# 
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as

jscrane

#define LIGHT 5
#define MOTION 0
#define SWITCH 1
#define LEDS 2
#define DUSK 4

#define HZ 4
#define SAMPLES (15*HZ)
#define ON_DELAY (30*60*HZ)
#define OFF_DELAY (15*HZ)

jscrane

#!/usr/bin/perl

use warnings;
use Xbee::API;
use Data::Dumper;

my $port = "/dev/ttyUSB0";
my $end_device = "0013a20040769646";
my $remaddr = pack( "H*", $end_device );
my $devaddr = pack( "H4", "fffe" );

jscrane

#include <EEPROM.h>

#define MOTION 1
#define SWITCH 0
#define LIGHT 2
#define LDR 3

#define HZ 4
#define SAMPLES (15*HZ)
#define ON_DELAY (15*60*HZ)

jscrane

#include <unistd.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

#include "xbee.h"
#include "lcd.h"

static int send_sync(int fd, uint8_t *remote, char *cmd, uint8_t *data, uint16_t n)
{