Interfacing of GSM SIM908 and arduino mega 2560

[Amit Raijade]

hello frnds..

 

I have interfaced above mentioned two module….

 

My hardware connection :-

 

TX of arduino connected to RX of sim908 and vice versa.

 

I have established GPRS connection with sim908 .

I am using HTTP protocol to send data to the server.

 

Problems:-

 

In first attempt the url gets hit and data is received by server.

 

At the 2nd attempt  when I try to send data to server, I get this error on Serial moniter “Signal connection error.”

 

Kindly help me out.

 

thanx in advance. 

[AJISH ALFRED]

Hi,

It must be something related with the network. Have tried changing the sim card, service provider and all?

[Amit Raijade]

I have tried with 2 service provider…

 

same problem is there…

 

kindly suggest any other solution…

[Ganesh Selvaraj]

Have you checked the signal strength? (Using AT+CSQ) ….. i once had a faulty modem whose signal drops after using it for a while (like 5 min.) and that happened with some specific SIM cards 

[Hamid]

Good Morning…. Programmers or Engineering Humans

I am Hamid

i just want to ask something with regards to the usage of the GSM

 

after GSM receives an information or a SMS is it possible that the GSM could send a random code without the use of human existence for short is their a possible program for the GSM that could send SMS to that user it is just like a confirmation code that user receives thank you hope for the positive response… .

[AJISH ALFRED]

Hi Hamid,

The incoming sms will give the sender mobile number also to the gsm module. Store that number and send an sms to that same number. Suggest you to have a look at the gsm interfacing project done on various microcontrollers, especially arduino. You can find the projects from the top most tab in this page EG LABS >> MICROCONTROLLERS

[rekha]

Hello friends

 

subject: Interfacing Problem of Arduino Mega2560 with Sim 900A Module

 

 

I am trying to interface Arduino Mega with Sim900A module since last two days. And i have come to know that Arduino Mega is not supporting the software serial library of arduino.

 

Can anybody help me out that which pins should i use to interface Arduino Mega2560 with Sim 900A module?

 

 

Hoping for a positive response.

 

Thank you

[Author]

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