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If you have flashed the nodemcu firmware successfully, you need to disconnect GND and GPIO0 otherwise the module will stay in bootloader mode and you will not be able to use it normally. You can only flash in this mode. Other things should be fine. You should at least get a startup message from nodemcu when the module starts.
Upload the file directly. When you uplaod through esplorere editor it sends the file line by line and tries to execute it on ESP8266. Some long lines or some lines with complex html may not work. Upload the complete file using upload button in left bottom row.
Can you check if your relay works -> give VCC to relay input pin.Secondly check if your esp module gives output. Check the pin with reference to GND.
Its already in description. http://robokits.co.in/download/init.zip
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