I have just tried out some programs on both the Arduino Uno and the Wavgat Uno, but they are certainly not 100% interchangeable. Simple sketches such as Blink work, but slightly more complex sketches do not. Wavgat has made some files available for Arduino IDE, but unfortunately they are not updated. Because the Wavgat is not 100% compatible, it will be difficult to transfer existing Arduino sketches to a Wavgat Uno R3. For that reason I have ordered a few Chinese Arduino Uno clones. I doubt that much will change from China because they have probably just developed the Wavgat for the local market and that is of course very large in China.
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