No connections to LOLIN C3 Mini other than usb to a pc running arduino ide. Error message is: Original message: PermissionError(13, 'The device does not recognize the ...

National Key Laboratory of Advanced Micro and Nano Manufacture Technology, School of Integrated Circuits, Peking University, Beijing 100871, P. R. China National Key Laboratory of Advanced Micro and ...

Using an Arduino Nano, ultrasonic sensor, and buzzer, it can sense objects in their way and provide an instant audible alert to them. So they can navigate independently. The best part of this blind ...