The Arduino Uno R3. Atmega328P-PU. On the small square chip is written ATMEL MEGA32U2.
I connect the jumper. The device disappears from device Manager. Remove the jumper - the device again appears as Arduino Uno. How to switch to DFU mode?
the Arduino bootloader listens for new program after reset. the reset executes the IDE over USB. just hit the Upload button in IDE
I need DFU mode to emulate as a HID-device (keyboard). Need reset the USB controller Mega32u2. After closing the contacts with a jumper, the board is again identified as Arduino Uno...
Has returned this fake. I bought the original in a box with a hologram. Now it works as it should! 