You may have noticed a sneaky sprintf function in void loop(). analogZero) // change to your twitter account name Sprintf(tweetText, "Pin analogue zero reads: %d. This inserts the value of "analogZero" into the variable "tweetText" at point %d If no output is required, you can just omit the argument, e.g. Specify &Serial to output received response to Serial. Twitter twitter("aaaaaaa") // replace aaaaaaa with your token Alter IP address to suit your own network!īyte mac = // choose your own IP for ethernet shield Don’t forget to update your IP address, MAC address and token: // Simple twitter interface We have a simple function tweet() which simply sends a line of text (which has a maximum length of 140 characters). If you want your Arduino to send a simple tweet consider the following sketch. To do so, please run the webserver example sketch as explained in chapter sixteen (Ethernet). A 9V 1.5A plug pack/wall wart will suffice.įrom this point it would be a good idea to check your hardware is working. You will need an Arduino Uno or compatible board with an Ethernet shield that uses the W5100 or W5500 Ethernet controller IC (pretty much all of them).įurthermore you will need to power the board via the external DC socket – the W5100 IC uses more current than the USB power can supply. Next, follow step two from the same page – which involves download and installation of the required Arduino library. Finally, don’t give it to others as then they will be able to post onto twitter using your account. Save your token somewhere safe, as you will need to insert it into your Arduino sketch. It will then present you with a long text called a “token”, for example: ![]() The process will take you through authorising the “tweet library” page to login to your twitter account – this is ok. Now log into twitter with using the account you will have for your Arduino, then visit this page and get yourself a token by following the Step One link. If you already have a twitter account, you can always open more for other uses – such as an Arduino.įor example, our twitter account is but the demonstration machine twitter account is Then we have set the primary account to follow my machine’s twitter account. If you do not have one, you can sign up for one here. In some areas, you can set twitter to send tweets from a certain user to your mobile phone via SMS – however if doing so be careful to confirm possible charges to your mobile phone account.įinally, if you are worried about privacy with regards to your tweets, you can set your account to private and only allow certain people to follow your tweets.įirst of all – you will need a twitter account. The neat thing about twitter on a mobile device is that if your username is mentioned in a tweet, you will be notified pretty well immediately as long as you have mobile data access. For people to receive your messages (or tweets) they also need to be a member of twitter and choose to subscribe to your tweets. You can create a message with a maximum length of 140 characters, and broadcast this on the twitter service. For the uninitiated who may be thinking “what is all this twitter nonsense about?”, twitter is a form of microblogging. ![]() In this article you will learn how to send messages from an Ethernet-enabled Arduino to twitter.
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