0
\$\begingroup\$

I'm communicating with my ZTE MG2639 module through UART. Few seconds after powering it and getting +CPIN and +STKPCI it just turns off (goes to stand by mode)

It only happens with SIM card, and after sending PIN.

What's wrong? I have tried on few different SIM cards and antennas.

\$\endgroup\$
2
  • \$\begingroup\$ I´m starting to use ZTE MG2639_V3, and I no have problems with serial communications, I have problems to connect GPRS. Your project with MG2639 module is OK ? I would like to share some ideas with you. \$\endgroup\$
    – user62722
    Commented Jan 5, 2015 at 16:30
  • \$\begingroup\$ I have found what was my problem. It looks like this module is draining huge current in quick burst and my power supply is to slow for that. I have added 1 cell LiPo and it's working like a charm! Thank you for your answer though. \$\endgroup\$
    – Ekci
    Commented Jan 5, 2015 at 20:18

1 Answer 1

1
\$\begingroup\$

I have found what was my problem. It looks like this module is draining huge current in quick burst and my power supply is to slow for that. Adding 1 cell LiPo did a trick.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.