Hi Tom, your diag log looks normal until the module starts to send something. It even succeeds with the TCP connect, but the connection closes as soon as it sends:
AT+CIPSTART="TCP","api.openvehicles.com","6867" OK
CONNECT OK AT+CIPSENDMP-C 0 QRG/M9iLIp+XEVajAB2v8t JIBS2rw2cub6ssu5QY4C7Q== xxxxxx
DATA ACCEPT:63
CLOSED
Any thoughts? I haven't yet looked communications of my working module to compare. Does anyone have a firmware or tutorial that sends a fixed sms message to test the cellular module?
Are you sure the SIM account has enough SMS & data volume? Does the SIM work normally in a mobile phone? You can use the diag mode to send an SMS manually. Note: the 808 does not echo LF, only CR. Regards Michael -- Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal Fon 02333 / 833 5735 * Handy 0176 / 206 989 26