AI Thinker A6 gsm module - many problems
hi.
i'm trying make remote weather station time now. watched andreas spiess on youtube talking a6 module, cheap bought one.
unfortunately turns out totally unreliable , i'm having headache because of it. first problem appeared when playing it, called at+copn command, started flood screen of command terminal operator names in infinity loop crashed. when powered on showed startup responses, random characters , didn't want respond commands. tried different things , managed start properly. after time started work again.
overall still sends random characters time time or hangs.
sometimes tcp connect command returns "unknown error" or "execute error", means nobody knows. fix have reset module.
when remote host closes tcp connection a6 module automatically closes gprs session. when close tcp connection on own doesn't happen. problem server closes connection before able send command. gsm operators charge every started 100kb in gprs session. when send 1kb , gprs session being closed being charged 100 times more be. in application send small amounts of data not trivial.
multiconnection mode (at+cipmux=1) doesn't work, first tcp connection starts properly, second returns execution error.
at+creg response +creg: 1,10 instead of +creg: 1,0.
i tried contact ai thinker through email , skype couple of times don't respond.
i'm trying make remote weather station time now. watched andreas spiess on youtube talking a6 module, cheap bought one.
unfortunately turns out totally unreliable , i'm having headache because of it. first problem appeared when playing it, called at+copn command, started flood screen of command terminal operator names in infinity loop crashed. when powered on showed startup responses, random characters , didn't want respond commands. tried different things , managed start properly. after time started work again.
overall still sends random characters time time or hangs.
sometimes tcp connect command returns "unknown error" or "execute error", means nobody knows. fix have reset module.
when remote host closes tcp connection a6 module automatically closes gprs session. when close tcp connection on own doesn't happen. problem server closes connection before able send command. gsm operators charge every started 100kb in gprs session. when send 1kb , gprs session being closed being charged 100 times more be. in application send small amounts of data not trivial.
multiconnection mode (at+cipmux=1) doesn't work, first tcp connection starts properly, second returns execution error.
at+creg response +creg: 1,10 instead of +creg: 1,0.
i tried contact ai thinker through email , skype couple of times don't respond.
another problem. when send data.sparkfun.com more or less ok, when send wunderground.com, server returns "success" gsm module stops responding after , has hard reset. function sends same both servers difference text string being sent server. piece of crap, save trouble , don't buy it.
Arduino Forum > Products > Arduino GSM Shield (Moderator: fabioc84) > AI Thinker A6 gsm module - many problems
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