I am trying to upload the ultrasonic sensor data to the thinkspeak cloud using the GSM module 900A. But I could not Upload it. Here i am proving the codes. Please suggest me the error. And any other good website related to this issue
I have checked your code and it seems fine. are you using the API correctly and what kind of error you are getting ?? Have you tested your GSM module i.e. by sending sms, play with it a little to know its working correctly.
Also make sure you have internet package in your SIM card.