upload problem with Nano

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1

I am using Arduino Nano to do a sensor which is a open source project from here:DIY 360 degree realtime outdoor LIDAR with ROS support (GrauLIDAR) | Work-is-Playing. The connection digram is also there.
When I first plug the usb/serial converter to my laptop, it said the usb drag too much power. Then I add a power source which is 5V, 1.5A to replace VCC and GND in serial/usb converter. But when I upload the code to Nano by click upload button and press reset button
I got follow issues:

avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0xe0

Thanks for your help.

2

That error indicates a comms problem between the computer and the arduino. Sometime this problem is due to a faulty USB cable. Also check if you have the correct USB port selected in the Arduino IDE, the correct board selected, and that the USB driver driver loaded properly.