I am wondering if anyone has a link to the PDF for the SIM800L EVB V2.2. I have found the PDF for the version 1.0. What I am really after is the meaning of the indicator LEDs. I was able to connect once to the Hologram Cloud but no more. I am getting a time out on AT+IPR=19200 and sometimes on which seems really odd. If I could understand what the LEDs are trying to tell me, maybe I can figure out where things are going wrong.
The RING LED is lighting up for about 10 seconds. In which time the NET LED is blinking once per second. They both go off four about a two seconds and then the whole sequence repeats.