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thx for the answer.
I just checked my wiring and oops there was a little mistake... So now I got of 280mV drop in Burst mode (calling the Phone or send SMS, GPRS etc.)
I think I can live with that and do hope that this is the Burst...
Can it happen that the GSM module is going to use even more...
hy
I got a similar problem with my SIM900. But my poer dow is random. So sometimes it starts up without any problems sometimes it doesn't (~1 out of 10 tries doesn't work)
I the SIM900 with 3x Tantalum electrolytic capacitor, SMD 470 uF 6 VDC (ESR 0.065 Ω).
Still I get a voltage drop of 840mV...
hy
So I just connected my SIM900 with 3x Tantalum electrolytic capacitor, SMD 470 uF 6 VDC (ESR 0.065 Ω)
But still I get a voltage drop of 840mV over a time of 1.2mS from 4V to 3.2V that's too much I think but what can I change?
Thx
Andy
nice code thx a lot but until here I do get without any problem:
> pasv
then when the server does deliver me the passive mode IP and port I cant connect with:
AT+CIPSTART=1,"TCP","205.234.235.188",37203
it tells me that I'm already connected. if I disconnect and try with this IP again it still...
Hy
like to power the SIM340 with a single LiPo. The Module does start up and shows me (connected to PC):
RDY
+CFUN: 1
+CPIN: READY
and then restarts again showing the 3 lines before again.
Whats wrong with the Module?
Thx
Andy
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