This post is reserved for detected issues (without confirmation or solution)
[20180418] [solarpeter] (What is this nasty clone? Running at quarter speed! - #4 by solarpeter - Avrdude, stk500, Bootloader issues - Arduino Forum])
However it also seems to have swapped some pin configuration around at the same time as these boards no longer work with an LCD shield when programmed as Wavcat Uno.
Either way this board doesn't meet my expectations of a basic UNO, we shouldn't have to load additional drivers to make it work like all its clone cousins, it should be interchangeable with all other UNO clones. Proof that you get what you pay for.
[20180722] [AingeruJM]
Why are there two folders (WAV and WAV8F) in Hardware folder provided by manufacturer
(Pert) (no hardware - #2 by pert - IDE 1.x - Arduino Forum)
The WAVGAT hardware package contains one folder that is for Arduino IDE 1.6.0 and newer. It also contains another folder named WAV8F for Arduino IDE 1.0.0. When you install that WAV8F folder it causes the warning because it's not compatible with the IDE version you're using. You can ignore the warning or you can fix it by deleting the C:\Users\cam\Documents\Arduino\hardware\WAV8F folder.
[20180722] [AingeruJM]
¿Error while uploading? Several times
java.io.IOException: jssc.SerialPortException: Port name - COM3; Method name - setEventsMask(); Exception type - Can't set mask.
at processing.app.Serial.dispose(Serial.java:166)
at processing.app.SerialMonitor.close(SerialMonitor.java:116)
at processing.app.AbstractMonitor.suspend(AbstractMonitor.java:90)
at processing.app.Editor$DefaultExportHandler.run(Editor.java:2160)
at java.lang.Thread.run(Thread.java:748)
Caused by: jssc.SerialPortException: Port name - COM3; Method name - setEventsMask(); Exception type - Can't set mask.
at jssc.SerialPort.setEventsMask(SerialPort.java:279)
at jssc.SerialPort.removeEventListener(SerialPort.java:1064)
at jssc.SerialPort.closePort(SerialPort.java:1090)
at processing.app.Serial.dispose(Serial.java:163)
... 4 more
[20180722] [Aingeru]
Seems GPIO work at 3.3V (instead of 5V)
(AingeruJM) Checked Digital outputs provide 3.3V (checked by connecting a digital output to an analog input, value measured is 4064, same as for 3.3V)
(Voltages not checked with multimeter yet!)
[20180725] [AingeruJM]
Would it be possible to load the booloader again into the chip so it performs as an Arduino UNO R3?
[20180802] [pert] ([WAVGAT pseudo-clone] Issues and Troubleshouting - #5 by pert - IDE 1.x - Arduino Forum)
Possibility that chip is in fact a LogicGreen LGT8Fx8 chip instead of an ATMega328P.