I bought this Self Balancing Robot ZYC0049 from Aliexpress about 2 years ago, but the sketch for the Arduino wasn't working! After many attempts and emails from the seller, I gave up and tried again... Even my friend Hari wasn't able to adjust the sketch! I ordered a new Self Balancing Robot ZYC0049 from Aliexpress and it was worse than my first time, because the website didn't work at all! After a week searching on the Internet I was able to get a sketch for this model! I'm gonna give you a place to download these files! Here it is: https://drive.google.com/drive/folder...
There are many more files there, not just for ZY0049, so scroll down to find it.
These files are for the robot that has the main PCB marked as PBOT3.0
At this point everything works, but the Bluetooth app, that I can't find!
Also when uploading the Sketch to Arduino, unplug the Bluetooth first!