@salmanfaris I've not used the same version of the stepper motor that you've mentioned but I've used 12V stepper motor with ULN2003 motor driver. So probably I can help you with the queries.

Firstly all the tutorials on the internet show how to connect your motor's wires to ULN2003. But, in reality when you buy those motors the wires color codes may be changed, so in that case, we need to use a multimeter and check the resistance of the wires. 2 wires will have the same resistance and other 2 wires have the same resistance and the leftover one is a ground wire. This way we can get to know which wire must be connected to which port of ULN2003 driver. This is the common doubt all get while using ULN2003.

@kowshik1729 thank you

@shankar Like I said before, can you check a sample programme with NodeMCU.

try this basic sketch https://www.hackster.io/Salmanfarisvp/webserverblink-using-nodemcu-26e1ed

Hi @SalmanFK ,

You can Serialize the data as a JSON or CSV string format and publish that as a single string, so you get the data in a single node, you also DeSerialize the string simply in the application end.

thank youu

@Sara

I already did some projects on Firebase with NodeMCU (ESP8266) .I got run time errors but mine's worked fine .U should check with your libraries . also tested over more than 2 libraries . In the code above u mentioned is not declared the FIREBASE_HOST,FIREBASE_AUTH, WIFI_SSID and WIFI_PASSWORD variable values may be u removed for privacy .The serial gps is not a big deal.U should check ur firbase with the given example of the particular header file or library .I didnt used the ArduinoJson.h library at all ....

@salmanfaris yes... The repo which used by @mhmdrameez have some issue. Can't find any latest updates in that repo.

@manthan555 Thanks

@shahidpk I think switching power on/off is not a good option, instead of that, you can try to set Flag for a particular ID and check ID in a time interval and run you task that time interval. Did you check that?