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How to drop all MongoDB databases

The title of the article is pretty much self-explanatory. So the easiest way I found to drop all your MongoDB databases from mongo CLI is to run this simple command which actually what it does is it goes through the result of getDBNames function and

Store Arduino data to Firebase database [Howto]

[UPDATE] This is a very old project and at the time was the only solution I could think of. Now things changed and more powerful boards are available which solve the issue of https. Please have a look at this library instead https://github.com/FirebaseExtended/firebase-arduino.  The last