Dronecell SIM900D not sensing the sim card.

Hi all

Im trying to get my dronecell up and running.

i have connected the cell through TX0/RX0 Ardunio 2560. Serial connections is working.

It respons to my AT command, but during startup it throwing CPIN NOT DETECTED.

I belive it not sensing the sim card.

RDY

+CPIN: NOT INSERTED

+CFUN: 1

Tryed to remove the sim pin, and also with diffrent working sim cards.

Also tryed with several diffrent power supply.

I measured the SIM_VDD with my fluke, and during startup i got 1,1v.

However im not sure if my voltmeter is able to sense the peak correctly, due to short periode of time the VDD is powered.

It should be 1,8v / 3,0v / 5..0v depends on wich sim card im using.

Im using the latest Firm..

Any help would be great.

Im running out of options.....

Thx

MrLudvig

John February 1, 2013 at 9:12am

Are you talking about diabling the sim detection? What specific AT code are you referring to?
Marc January 28, 2013 at 10:08am

Hey Guys,

i have 2 drone cell boards and have exactly the same problem have tried with 4 different operator sim cards with no luck at all, i have contacted the manufacturer narobo no answer from them either

This reply was deleted.

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