Arduino Uno + SIM900
Software serial connection
Hi - I made a thread the other day about not being able to connect to the blynk server. After the modem init, it would just keep repeating:
connecting to "blynk-cloud.com:80"
without ever connecting. I couldn’t get it to work, so I went back and learned all about AT commands and whatnot, then ran them through the monitor to try to set everything manually to make http requests via gprs.
I found that my SIM card (Telcel, Mexico) does not have SSL. As in, if I do the command
AT+HTTPSSL=?, I am returned this:
It’s my understanding that it should just say HTTPSSL: 1 if it’s equipped. I tested it out by running a regular HTTP connection and receiving packages successfully, then an HTTPS and getting a 601 error.
Is it possible that the reason I can’t make a GSM connection with the blynk-cloud is because my SIM card doesn’t allow SSL connections? Is there any way around this?