I bought for my son a MBOT ranger robot.
I updated firmware, select Bluetooth mode, deselect COM port, disconnect usb cable. When I try to control it using my android application it fails indicating me that the firmware is not compatible.
What it is strange is that when I let connected usb cable, Bluetooth mode Under my android phone works perfectly. I do not undersand. Did anyone have the same problem ??
Without connected usb cable my robot does not work
I use mblock 3.4.12