using gpio pins raspberry pi

at the time of the connection, it's simple to do, just add the library to the. Pro file, as shown in:And then compile again, under normal circumstances will be compiled successfully, into the project directory, we will find a very long name of the folder, which is the QT in the compilation of the time produced by some intermediate files, of course, we compile the generated executable is also in the inside, the name and work name, open the console, Enter the directory with the CD command. and th

git.Cd/home/git Create a folder for your repository, move it in, initialize and clear the repository.Note that I am currently using a "git" user. This user has control over the/home/git directory.Mkdir test. gitCd test. gitGit -- bare init Push your code to Pi In the end, we will push the code to Raspberry Pi. First,

shown in:As for the Rom how to come, use the almighty Baidu search you want to play it. I tried a dinosaur fast hit and Super Mary, dinosaur fast hit the words a bit card, should be the relevant simulator in the Raspberry Pi simulation optimization is not the reason (see the Official document, Raspberry Party FB Alpha support level C, calculate the poor bar). Af

PiAuthorized_keysFile, sent via SSH (replace username and IP-ADDRESS with the username and Raspberry Pi IP on Raspberry Pi ): cat ~/.ssh/id_rsa.pub | ssh Note that you still need to verify your password this time. Try nowSSH Command, you should be able to connect directly without a password. If you see the "agent a

Baidu an online music, in the headphone jack plug in headphones can hear music.6. Play VideoIn order not to let my Raspberry Pi early, I decided to get the power supply USB, and sure enough that the nasty small square disappeared, but not stable, electricity, or will be with the power of the red lights flashing a flash, the small box will flash a flash, may be the power supply is still not enough, or becau

500ms} led.state=0;}//led.close ();//Process.exit (); //Exit ProgramThere is also a component cur.jsvarHTTP = require ("http");//Utility function that downloads a URL and invokes//callback with the data.function Download (URL, callback) {http.Get(URL, function (res) {vardata =""; Res.on ('Data', function (chunk) {data+=Chunk; }); Res.on ("End", function () {callback (data); }); }). On ("Error", function () {Callback (NULL); });} Exports.download= download;Copy 3 files to a self-built

linux applications. the reason is very simple. perl is fading out, ruby is not powerful, shell is not enough, php is not suitable, and java is not explained. I remember that the Redhat 7 character interface installer was written in python, which was almost the first time I heard about python. it was very powerful, easy to use, and easy to modify and adjust. Don't waste time and energy on things unrelated to business logic Yesterday, my wife read the RPi. G