사물인터넷 강의 예제

ArduinoServer.zip

Arduino (2).zip

ArduinoClient.zip

<MQTT>

mosquitto_sub -t "arduino" -h 192.168.0.23 -p 1883

mosquitto_pub -t "arduino" -m "Hello!!" -h 192.168.0.23

https://github.com/knolleary/pubsubclient

<MongoDB>

c:\mongodb

mongod -dbpath c:\mongodb\var

> db.scores.find();

> db.scores.find({i:3});

> db.scores.find({i:{$gt:3}});

> db.scores.find({i:{$gt:3,$lt:6}});

> db.scores.find({$or:[{i:{$lte:3}},{i:{$gte:7}}]});

> db.scores.find({i:{$in:[2,3,4]}});

> db.scores.find({i:{$nin:[2,3,4]}});

> db.scores.find({a:{$exists:true}});

> db.scores.find({}, {_id:0});

> db.users.update({name:'Johnny'},{$pull:{languages:'scalr'}});

> db.users.update({name:'Johnny'},{$push:{languages:'scalar'}});

> db.users.update({name:'Sue'},{$set:{age:20}});

> db.users.update({name:'Sue'},{$unset:{age:20}});

> db.users.update({name:'Hong'},{name:'Park',languages:['english']});

> db.users.remove({name:'Sue'});

> db.users.remove({});

> db.users.drop();