“App Inventor 2 Databases and Files” ebook now available, 322 pages

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3 Responses

  1. Riad says:

    I used the App Inventor. There is a canvas ineedd. The LEDs are Images which I change when a touch event points to them. For communicating I just send a very simple Code like A+byte to switch on byte LED or C+ byte to clear one. Then there is also a clear all command, you can see it in the last seconds, the arduino clears all 64 LED in a fraction of a second, the App needs some more time

  1. August 1, 2016

    […] the content of the FirebaseDB changes, each app can be alerted to the changed data. (My book on App Inventor Databases and Files provides examples of some kinds of data sharing that can be done using TinyWebDB – sharing is […]

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