\n– Raspberry Pi<\/a> ( obviously) mine is a Model B Version 2
\n– iPhone (connected to WiFi)
\n– Network Connection
\n– LED light <\/a>
\n– Resistor<\/a> (I used 200 ohm)
\n– Wire to connect it all
\n– Bread board<\/a> or clips to hold it all together.<\/p>\n
All of these items can be gotten at <\/p>\n
![\"http:\/\/www.newark.com\/wcsstore\/ExtendedSitesCatalogAssetStore\/cms\/asset\/images\/common\/header-footer-sprite.png\"](\"http:\/\/www.newark.com\/wcsstore\/ExtendedSitesCatalogAssetStore\/cms\/asset\/images\/common\/header-footer-sprite.png\"){kind=icon}
<\/a><\/div>\nAssumptions:<\/strong> Lets get started!<\/p>\n The first thing you will need to do is get your Pi configured. We need to put a few things on your Pi (replace with your Pi\u2019s IP of course) Now you will need to type into your terminal window<\/p>\n this will install the GPIO Library. <\/p>\n Lets write some code<\/strong> NOTE:<\/em> you need to this part via the UI can’t do it off a ssh connection. If you don’t have one you can do a wget and download this script. (optional)<\/strong> <\/p>\n This will open up the python script editor Click File > Save when you are done (Ctrl + S). * Note the “nice -n 10” sets process priority. If operations are very important, use a lower number than 10)<\/p>\n Now the hardware<\/strong> If you are having trouble getting the led to light up, double-check your wiring, and make sure you have installed the GPIO Python library according to my instructions. You can download the completed script here<\/a><\/p>\n Run the Ardumote App<\/a> on iPhone\/iPad. Create a Toggle Button with your Pi\u2019s IP, port 7777, and set the outgoing message as \u201cP7\u2033 so that \u201cP7H\/L\u201d will be sent when you toggle the switch.<\/p>\n Learn to create the iPhone app piece of this project.<\/a><\/p>\n
\n– You have already set up your Pi for the first time. In other words you plugged it in and ran it once.
\n– You have connected to the internet.
\n– You used the default install of Raspbian (not sure this is required though)<\/p>\n
\nSIDE NOTE:<\/em> (running headless<\/a>)
\nIf you are like me and you don’t have your Pi connected to a monitor and keyboard then you will need to SSH in the device.
\nTo do this you will need to open a terminal window (mac or pc) and type<\/p>\nssh pi@192.168.0.117<\/pre>\n
\n(username:<\/em> pi<\/strong> password:<\/em> raspberry<\/strong> )<\/p>\nsudo apt-get install rpi.gpio<\/pre>\n
\nNow we need to write some python script that will allow us to communicate to the GPIO (general purpose input\/output) pins. To do this you can open a terminal (if its not open), and type.<\/p>\nwget http:\/\/mypocket-technologies.com\/iphoneScript<\/pre>\n
sudo idle<\/pre>\n
\nnext type in the new python window<\/p>\n\nimport socket\nimport RPi.GPIO as GPIO\nimport os \n\nGPIO.setmode(GPIO.BOARD) ## Use board pin numbering\nGPIO.setup(7, GPIO.OUT) ## Setup GPIO Pin 7 to OUT\n\n#Inputs\n#-----------------------------------------------------------------------------\nRxSock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)\nTxSock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)\n\n#Defaults\nIP = '0.0.0.0'\nInPort = 7777\nOutPort = 7777\n\n\nRxSock.bind((IP,InPort))\n\nwhile True:\n\tdata = RxSock.recvfrom(512)\n\tmessage = data[0]\n\tsenderinfo = data[1]\n\tsenderIP = senderinfo[0]\n\tprint \"message received: \", message\n\n\n\t#PIN 7\n\tif (message == 'P7H'):\n\t\tprint \"Pin 7 is now High\"\n\t\tGPIO.output(7, True)\n\t\tTxSock.sendto('Pin 7 is now High',(senderIP,OutPort))\n\n\telif (message == 'P7L'):\n \t\tprint \"Pin 7 is now Low\"\n\t\tGPIO.output(7, False)\n\t\tTxSock.sendto('Pin 7 is now Low',(senderIP,OutPort))\n<\/pre>\n
\nLastly run to start the script<\/p>\nsudo nice -n 10 python iphoneScript<\/pre>\n
\nLastly you will need to set up the led and do all the connections.
\nI have a diagram showing what needs to go where. You need to have a wire from ground and a wire from pin 4
\n![\"RaspberryPi\"](\"http:\/\/bitcows.com\/wp-content\/uploads\/2014\/08\/RaspberryPi.png\")
<\/p>\n