@tmid84 Technically this was my SIM on my own private GSM network but I did test this on public networks - AT&T and T-Mobile in the U.S. As far as I know Verizon doesn't operate a GSM network - they are CDMA so this wouldn't work with them.
@digitwolfcom After making sure the serial settings are correct and pressing the reset button, it usually comes up with some data. If not, I hit enter a few times. Try other serial software or another system if you suspect serial misconfiguration. I'm using Linux / minicom in the demo.
@digitwolfcom Are you sure the USB serial port shows up in the operating systems you are trying? Make sure you are picking the correct port. I forget the baud rate (9600/ 57600?) but 8 bits, no hardware flow control and 1 stop bit should be the other settings.
@wookster77 The way SMS works, a tower must be involved. SMS messages can't go directly from one handset to another. In this case, I do go to a tower, but I happen to run that tower. See the video I did on OpenBTS - that is the "tower" I'm actually using in this video.
@wookster77 The way SMS works, a tower must be involved. SMS messages can't go directly from one handset to another. In this case, I do go to a tower, but I happen to run that tower. See the video I did on OpenBTS - that is the "tower" I'm actually using in this video.
does anybody know of any software that can be used with this thing that would allow you to do some kind of SMS/MMS gateway, maybe interfacing with an SQL database? I can hack all that kind of stuff, but i'm not really a coder at the level of writing drivers for this.. thanks!
@Neolith100 I work for a telecommunications company so I have several hundred SIMs but you can use valid SIMs as well as long as you tell the phone to connect to your network. For the phone numbers, you can just make them up and program them in. Real numbers only matter if you connect Asterisk to the phone network which I have done but not in these videos. I find it most helpful to use believable test data. Thanks for watching.
So looked over the posts and saw that you were using OpenBTS and used an "off the shelf" sim... where did you get that? lol, didn't even know those existed. Secondly, how did you get Asterisk to assign an almost "valid" looking phone number... is that some coding trickery? :-) BTW, seriously enjoyed this and your other vids... good, clean to the point info, love it!
@engtarkan Just turning the radio on with a valid SIM in it will cause it to associate with a network. You will get a notification when it associates. (as it does in the video) When an SMS arrives, (also demonstrated in the video) it gets stored on the SIM card. I also demonstrate how to read the message off of the SIM card and display it's text so you would have to use similar commands. Lastly you will want to delete the message from the SIM so it doesn't fill up and start refusing messages.
hi anders, i have order all the parts and now i'm ready to work with, i'm asking how can i start on programming this module using a 8051 micro-controller ?
can you please upload a full tutorial for setting up from scratch how to operat it and when a SMS is sent to it it sends a signal to the 8051 .. sorry , but really i need some help
hi anders, first i want to say that all your videos are so much interesting because you explain very well ! and i would like to thank you for sharing ! i have questions please : both the 2 GSM models are just to simulate a Mobile station ? right ? and you control this " mobile " by codes in computer ? right ? wich Network you use ? a personal one ? or the given by provider ? the sim card is given by provider of network or you programe it ?
@smawis I run my own network so the SIM is just off the shelf. It is an OpenBTS system that I demonstrate in the next episode. (episode 4)
The GSM modules act as mobile stations, yes. they function very similarly to standard cellphones (like the smartphone in the video) but don't have audio hardware set up. You could easily wire in a microphone / speaker though. These modules are really made for data applications like data collection or command and control.
ooh thank you sir, i will order the part today, you helped me alot thanks sir.. and i love these types of upload.. dont stop and good luck .. thanks again anders94
Engtarkan: you don't need the development board but it makes it far easier to get at and test the GSM module. If you didn't use it, you'd need some way to power / read data off of it. The critical component is the surface mounted header.
Yes it is possible to do what you are asking. I'd use the development board to do this if I were you.
What SIm card did you use? Do you know what networks this device is compatable with (Verizon, AT&T, etc.)?
tmid84 3 days ago
@tmid84 Technically this was my SIM on my own private GSM network but I did test this on public networks - AT&T and T-Mobile in the U.S. As far as I know Verizon doesn't operate a GSM network - they are CDMA so this wouldn't work with them.
anders94 3 days ago
I just bought these items, but can't get any respond from the module.
Is there some trick to initiate the connection?
digitwolfcom 4 months ago
@digitwolfcom After making sure the serial settings are correct and pressing the reset button, it usually comes up with some data. If not, I hit enter a few times. Try other serial software or another system if you suspect serial misconfiguration. I'm using Linux / minicom in the demo.
anders94 4 months ago
@anders94 I tryed Putty on windows 7, windows 2003, Hyper Terminal and minicom on ubuntu.
I presed enter and other keys hundreds of times, but the only result was a blinking TX led, but not the RX.
I have tryed all baud rates and now desparate, as sparkfun's support does not reply on my email.
digitwolfcom 4 months ago
@digitwolfcom Are you sure the USB serial port shows up in the operating systems you are trying? Make sure you are picking the correct port. I forget the baud rate (9600/ 57600?) but 8 bits, no hardware flow control and 1 stop bit should be the other settings.
anders94 4 months ago
I have a question. Is the modem sending an sms directly to the phone or via a GSM tower? Sorry for the noob question, still learning.
wookster77 4 months ago
@wookster77 The way SMS works, a tower must be involved. SMS messages can't go directly from one handset to another. In this case, I do go to a tower, but I happen to run that tower. See the video I did on OpenBTS - that is the "tower" I'm actually using in this video.
anders94 4 months ago
@wookster77 The way SMS works, a tower must be involved. SMS messages can't go directly from one handset to another. In this case, I do go to a tower, but I happen to run that tower. See the video I did on OpenBTS - that is the "tower" I'm actually using in this video.
anders94 4 months ago
does anybody know of any software that can be used with this thing that would allow you to do some kind of SMS/MMS gateway, maybe interfacing with an SQL database? I can hack all that kind of stuff, but i'm not really a coder at the level of writing drivers for this.. thanks!
whyteks 6 months ago
@whyteks smsqueue which is included in the distribution can easily be modified to use a database.
anders94 6 months ago
@Neolith100 I work for a telecommunications company so I have several hundred SIMs but you can use valid SIMs as well as long as you tell the phone to connect to your network. For the phone numbers, you can just make them up and program them in. Real numbers only matter if you connect Asterisk to the phone network which I have done but not in these videos. I find it most helpful to use believable test data. Thanks for watching.
anders94 7 months ago
So looked over the posts and saw that you were using OpenBTS and used an "off the shelf" sim... where did you get that? lol, didn't even know those existed. Secondly, how did you get Asterisk to assign an almost "valid" looking phone number... is that some coding trickery? :-) BTW, seriously enjoyed this and your other vids... good, clean to the point info, love it!
Neolith100 7 months ago
By any chance are you familiar with snmp? I am having a very hard time with it and I am desperately looking for help.
anoxxi 8 months ago
I just discovered they installed this into my home alarm system and charged me 900 dollars : ( great video by the way
anoxxi 8 months ago
thanks,yes it works with serial communication, my application is to use the microprocessor as a switch.
when a sms is sent to the GSM modem, i want the GSM to send a serial signal to the 8051 so that the 8051 set other pins high or low,
so my problem is how to start the GSM modem and how to set it to receive SMS messages from a cell phone and then send a serial signal ..
thanks again fro the help
engtarkan 10 months ago
@engtarkan Just turning the radio on with a valid SIM in it will cause it to associate with a network. You will get a notification when it associates. (as it does in the video) When an SMS arrives, (also demonstrated in the video) it gets stored on the SIM card. I also demonstrate how to read the message off of the SIM card and display it's text so you would have to use similar commands. Lastly you will want to delete the message from the SIM so it doesn't fill up and start refusing messages.
anders94 10 months ago
I'm not familiar with the 8051 platform but as long as you have serial I/O working I would think you could do an interface. What's your application?
anders94 10 months ago
@anders94 thank you Mr anders ..
engtarkan 9 months ago
hi anders, i have order all the parts and now i'm ready to work with, i'm asking how can i start on programming this module using a 8051 micro-controller ?
can you please upload a full tutorial for setting up from scratch how to operat it and when a SMS is sent to it it sends a signal to the 8051 .. sorry , but really i need some help
engtarkan 10 months ago
hi anders, first i want to say that all your videos are so much interesting because you explain very well ! and i would like to thank you for sharing ! i have questions please : both the 2 GSM models are just to simulate a Mobile station ? right ? and you control this " mobile " by codes in computer ? right ? wich Network you use ? a personal one ? or the given by provider ? the sim card is given by provider of network or you programe it ?
smawis 10 months ago
@smawis I run my own network so the SIM is just off the shelf. It is an OpenBTS system that I demonstrate in the next episode. (episode 4)
The GSM modules act as mobile stations, yes. they function very similarly to standard cellphones (like the smartphone in the video) but don't have audio hardware set up. You could easily wire in a microphone / speaker though. These modules are really made for data applications like data collection or command and control.
Thanks for watching.
anders94 10 months ago
ooh thank you sir, i will order the part today, you helped me alot thanks sir.. and i love these types of upload.. dont stop and good luck .. thanks again anders94
engtarkan 10 months ago
Engtarkan: you don't need the development board but it makes it far easier to get at and test the GSM module. If you didn't use it, you'd need some way to power / read data off of it. The critical component is the surface mounted header.
Yes it is possible to do what you are asking. I'd use the development board to do this if I were you.
anders94 10 months ago
hello sir, i need your help please, is this device has to come with the development board ? or there is no need for it ?
and i would like to ask, if i want to read a Text message and then send a signal to a microprocessors is it possible? please help
engtarkan 10 months ago
Anders, very good video! thanks for sharing :)
666korihor666 11 months ago