i read the site. what exactly is the problem. There are some spelling mistakes in describing the circuit (like- sim holder is reffered as K15 instead of K4 ...).
Hopes that this is not your problem.
Hi
My problem is that i tried to start the modem and the led is off....now I am try to connect it by serial to my pc to use AT commands...
I think is better for me to understand in steps that whole project at once
I think also in that circuit the 2.75V pin is also wrong because in gm47 manual this is pin 34...
Are there some tests that I could make to be sure that I am not wrong?
Thank you
What i meant was did you designed all the circuit(except gsm module) and connected to the pc to send AT COMMANDS.
To check whether the program is right.
i have build a rs232 interface between modem and pc serial and a level adapter from 5v to 3.3
now i can comunicate with modem by pc on serial
i will start write a program for microcontroler soon ..
i don't know and will not lose time with that...it has many mistakes on that diagram....i decided to do my own and take it step by step
1. connect to pc
2. learn at commands
3. write my soft for microcontroller
etc....
Hi, I´m at Venezuela where I can´t get the GM-47 module. Can you recommend a reliable supplier?
please. Lucian says the diagram has errors; Did anyone get this working? I wouldn´t like to blow my module if the circuit is wrong.Thanks.
I can´t get it locally,but I suppose it would work. I´ll check, make sure which bands work here and come back.
What I need is to turn ON and OFF my pump by cell, with security ( only a few numbers should be received )
I´m checking this
Whichever module I use will have to be imported; I´m investigating the frecuencies our carriers use, try to hack an old cell phone and understand hackaday´s circuit in the meantime. Please let me know how you´re doing and thanks.
hi, how can i view the upload schematic diagram for this gsm project?
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hi, can i check if the schematic for TD and RD in this website is correct,**broken link removed**, thanks.
i have a circuit board with the exact connection,but to lpc1769, and i'm uable to receive any response in from the module despite sending the AT command. what should i do?