Serial Port not selected solved ,Arduino,nodeMCU COM port

serial port not selected problem solved. If you working on Arduino or nodemcu project and failed to upload the software into nodemcu and it shows that the serial port not selected then this video is very helpful for you. Just watch and follow these step by step and solve it by yourself. No such file or directory error watch this---    • No such file or directory error : esp8266 ...   How to upload programme your NodeMCU with Blynk code (watch this)--    • How to connect nodeMCU(ESP8266) with BLYNK...   Video: SUMAN'S WORLD Thank You.