I recently bought this board: UNO R3 + WiFi ATmega328P+ESP8266 (32Mb memory) USB-TTL CH340G for Arduino Uno NodeMCU WeMos ESP8266
Unfortunately I can't upload my sketch (for testing it is the blink sketch) to the board and have no idea what's the reason.
I am new to Arduino and IDE
Please suggest Step by Step process !
using WIN10 and IDE Arduino 1.6.5 .
Any help appreciated
error:
esptool v0.4.8 - (c) 2014 Ch. Klippel ck@atelier-klippel.de
setting board to ck
setting baudrate from 115200 to 115200
setting port from COM1 to COM1
setting address from 0x00000000 to 0x00000000
espcomm_upload_file
espcomm_upload_mem
error: Failed to open COM1
error: espcomm_open failed
error: espcomm_upload_mem failed