| Author |
Message |
gravi
Joined: 30 May 2006
Posts: 46
Location: Hyderabad, India
|
 15 Sep 2006 10:50 Re: Sim300 |
|
|
|
Hi everybody
Im transmitting data packets(nearly 500Bites) to host through GPRS, unfortunately some of my packets are missing.
Modem responds SEND OK after a packet is sent. Im not getting any responce for those missing packets. In data sheet it is mensioned that Modem responds either SEND OK/SEND FAIL or ERROR but Im not getting any kind of response for missed packets. I havent used flow control's. Is flow control manditory at 9600kbps baud rate.
According to my hardware RTS is pulled down and CTS and DTR are Not connect.
Thankyou
Ravi.
|
|
| Back to top |
|
 |
gravi
Joined: 30 May 2006
Posts: 46
Location: Hyderabad, India
|
| 02 Nov 2006 8:59 Re: Sim300 |
|
|
|
Hi everybody Good day
I have been partially satisfied working with Sim300 fine.
1. I would like to know is there any command to reset modem.
2. Is it manditory to switch On modem manually when modem Switches OFF due to low power (less than 3.4 V).
Thanking you
Ravi.
|
|
| Back to top |
|
|
ramho100
Joined: 16 Nov 2006
Posts: 5
|
| 24 Nov 2006 16:08 Sim300 |
|
|
|
Hi,
Iam also having the problem of no SIMVDD. although I am getting the poweron and LED blinking. Does it realyy related to the baudrate, what if I have not connected to PC at all
Added after 11 minutes:
Hi,
For Sim300, Does it really require the full rs 232 link or can i work only with Rx,Tx RTS and CTS for normal operation with at commands ( not considering the s/w upgradation)
Thanks,
Ramho
|
|
| Back to top |
|
|
MacroGroup
Joined: 22 May 2006
Posts: 5
|
| 29 Nov 2006 8:43 Re: Sim300 |
|
|
|
Hi Everybody!
Did anybody have sim300D modem datasheet?
thanks in advance
|
|
| Back to top |
|
|
imhell
Joined: 27 Apr 2007
Posts: 1
|
| 27 Apr 2007 12:50 Re: Sim300 |
|
|
|
| MacroGroup wrote: |
Hi Everybody!
Did anybody have sim300D modem datasheet?
thanks in advance |
hi guyz im also looking for the data sheet of this modem ....can anyone get it ...
greetz
|
|
| Back to top |
|
|
Balarama
Joined: 11 May 2007
Posts: 1
|
| 11 May 2007 11:40 Re: Sim300 |
|
|
|
Hello everybody,
I am very happy to be here to learn some useful information about SIM300.
I am working on SIM300 now also. And hope to join you in the feature.
Bala
Added after 10 minutes:
Hello
Added after 5 minutes:
Hello all,
Attached please find the data sheet of SIM300D.
Bala
|
|
| Back to top |
|
|
dscoolx
Joined: 31 May 2007
Posts: 4
|
| 12 Jun 2007 21:46 Sim300 |
|
|
|
Hi all, I have just purchased a SIM300 module for under $85 in Bnaglore, India.
I am unable to find any sort of documentation on it.
I am in desperate need of interfacing diagrams.
Please help!
|
|
| Back to top |
|
|
gravi
Joined: 30 May 2006
Posts: 46
Location: Hyderabad, India
|
| 13 Jun 2007 14:33 Re: Sim300 |
|
|
|
Hi
You can find all the datasheets required for SIM300 under the same POST and RX and Tx lines are sufficient to interface with your controller and you need to maintain same power supply for modem and Controller (same voltage).
Thanking you
Ravi
|
|
| Back to top |
|
|
zorz
Joined: 16 Jun 2007
Posts: 1
|
| 16 Jun 2007 13:24 Re: Sim300 |
|
|
|
Hi
I have SIM399-EVB_v2.02 board which works fine.
But know I placed the design on our board and conected it to ARM7 procesor, which for know I am not using full Modem interface( I connected DTR an RTS to 0 ) , and currently just configured RX and TX pins.
And I have the same problem as described before. I just receive 64ms and 800ms led blink periode.
could be UART reason for problems?
I am attaching v 1.06 design used for building my project
best regards
|
|
| Back to top |
|
|
gravi
Joined: 30 May 2006
Posts: 46
Location: Hyderabad, India
|
| 18 Jun 2007 6:19 Re: Sim300 |
|
|
|
Hi Zorz
Make your post clear
do not repeat sentencences with have the same problem as described before
You should find time to type your question in brief.
regards
Ravi
|
|
| Back to top |
|
|
carel101
Joined: 04 Jun 2007
Posts: 4
|
| 18 Jun 2007 14:15 Sim300 |
|
|
|
Hi All
Is anyone here using SIMCOM modules in quantity (more than 100). We want to use SIM300, but we are concerned about quality. If anyone can verify for us if these modules are working well and are dependable, I will be grateful..
regards
Carel
|
|
| Back to top |
|
|
Vinay1277
Joined: 22 Jan 2007
Posts: 3
Location: Kota
|
| 18 Jun 2007 19:26 Re: Sim300 |
|
|
|
I am having two sim300 module based modems loaded with two GPRS activated SIM from AIRTEL (indian cellular service provider) . Both these modems are connected to hyperterminal and responding to AT commands well . We have already exchanged SMS voice ,call through these modems . Now i intend to achieve three objectives with it first of all to transmit data using data call through these modems . Secondly to send and receive emails through modems . Third part is to transmit data through GPRS between these modules .I believe to achieve third objective we need to connect these modems to a web server and route data transfer through it . We are planning to host our own website and use database facility provided by BSNL ( Indian ISP) .If anybody from india can comment on it .
I believe this must be basic requirement for many a solution on these three issues will many a lot .I am looking forward for leads towards solution of these problem .
|
|
| Back to top |
|
|
kostbill
Joined: 07 Dec 2004
Posts: 52
|
| 21 Jun 2007 10:00 Re: Sim300 |
|
|
|
Hello everyone.
It seems that a lot of people is working with the SIM300/340 now. I think it is mainly because it is very cheap.
I have some of these too and I have a question.
Are they reliable? Since we are expected to have a professional product, we must be sure that this module does what it sais. Are any people here that have managed to work with the modules without any problems?
This is the most important part of the product design.
I wish it works good because it is very very cheap!
Thanks.
Bill
|
|
| Back to top |
|
|
pisoiu
Joined: 31 Dec 2002
Posts: 899
Helped: 24
Location: Romania
|
| 21 Jun 2007 23:22 Sim300 |
|
|
|
I've used over 1k so far, 300 and 300D models. I have some dead modules after some time, but well in an acceptable margin for losses (under 5 pcs. at this qty). The biggest problem at the beginning was with the development, there are a lot of situations when they need a certain way to handle them (low signal situations, in roaming, etc.). I am satisfied by them, and in the future I will go in the same way. Compared for example with Telit GM862, they are better (just my opinion).
/pisoiu
|
|
| Back to top |
|
|
tramp
Joined: 06 Aug 2005
Posts: 80
Helped: 1
Location: india
|
| 02 Jul 2007 19:26 Re: Sim300 |
|
|
|
Hi,
As per my observation smcom rovides lowe cost & small size modles cpare to others.But I dont find it relable.
Regards,
tramp
|
|
| Back to top |
|
|
ds18s20
Joined: 14 Jun 2006
Posts: 137
Helped: 2
Location: Bay Area
|
| 02 Jul 2007 19:35 Re: Sim300 |
|
|
|
| tramp wrote: |
Hi,
As per my observation smcom rovides lowe cost & small size modles cpare to others.But I dont find it relable. |
Is this based on RF reliability meaning signal stremght, etc or does the module "lock up" and so forth?
|
|
| Back to top |
|
|
pisoiu
Joined: 31 Dec 2002
Posts: 899
Helped: 24
Location: Romania
|
| 02 Jul 2007 23:53 Re: Sim300 |
|
|
|
| tramp wrote: |
Hi,
As per my observation smcom rovides lowe cost & small size modles cpare to others.But I dont find it relable.
Regards,
tramp |
Some arguments will be really helpful...
/pisoiu
|
|
| Back to top |
|
|
gravi
Joined: 30 May 2006
Posts: 46
Location: Hyderabad, India
|
| 10 Jul 2007 7:19 Re: Sim300 |
|
|
|
Hi
I would like to configure SIM300 as Server, Can any one upload datasheets to configure SIM300 as SERVER.
Thanking you,
Ravi
|
|
| Back to top |
|
|
CADiLO
Joined: 17 Feb 2006
Posts: 2
|
| 10 Jul 2007 12:15 Sim300 |
|
|
|
| In connection with an error in firmvare, Sim300c does not work in the mode SERVER.
|
|
| Back to top |
|
|
gravi
Joined: 30 May 2006
Posts: 46
Location: Hyderabad, India
|
| 14 Jul 2007 21:29 Re: Sim300 |
|
|
|
Hi
Is here any one who configured and used SIMCOM modems as server. Im trying to configure SIM300 as server but Im struck at IP address which received with response to CIICR command. I have referred TCP/IP application notes but I would like to conform is it mandatory to get static IP address for my sim card from the respective service provider?
with regards,
Ravi
|
|
| Back to top |
|
|
jwai85
Joined: 25 Jul 2007
Posts: 7
|
| 14 Aug 2007 9:39 Sim300 |
|
|
|
| Gravi, the PDF files you posted, is it all that i need to fabricate a SIM300 evb for basic data and sms ??
|
|
| Back to top |
|
|
brand
Joined: 09 Jun 2006
Posts: 3
|
| 14 Aug 2007 18:45 help for Sim300 |
|
|
|
I am using sim300_V7.02.
When it is powered on, I received RDY and CPIN: NOT INSERTTED
(Sim card not detected).
Anyone can help me?
|
|
| Back to top |
|
|
brand
Joined: 09 Jun 2006
Posts: 3
|
| 18 Aug 2007 12:40 Need help on Sim300 |
|
|
|
I am testing SIM300 module
When it powers on I receive:
RDY
CPIN: NOT INSERTED
CFUN:1
I have checked the Sim card wiring, I think it is corect.
I have tested with 2 cases: SIM PRESENCE signal wired to Vext (via 10K resistor) and grounded.
Any one can help me?
Brand
|
|
| Back to top |
|
|
planet69
Joined: 27 Jul 2006
Posts: 28
|
| 06 Sep 2007 5:47 Re: Sim300 |
|
|
|
From the SIM300 datasheet, i understand that transmit burst may cause voltage drop and current consumption reaching levels of 2A.
1) what is this transmit burst?
2) is sending AT commands that requests data from the network concerned, for example AT+CSQ? and AT+CREG? constitutes as transmit burst?
3) does constant periodocal sending of AT+CSQ? and AT+CREG? at intervals of 3 seconds each drains the power supplied to SIM300?
thank you
|
|
| Back to top |
|
|
Handsome Hero
Joined: 04 Aug 2004
Posts: 5
|
| 11 Sep 2007 9:44 Re: Sim300 |
|
|
|
I'm using Q24 from Wavecom it's look so good, www.wavecom.com, and Now I want to test my product with SIM300D,
I dontknow, can we connect 2 sim300D together without any Service supplier? it means, I have 2 SIM300D module, and I using them as Wireless transmitter, and receiver,
Can We transfer data between 2 SIM300D module, in local ?
Added after 1 hours 47 minutes:
where can i buy SIM module, anyone can let me know a store, I've visitted excelpoint, but so hard to buy a product,not same as DIY 
Added after 1 hours 28 minutes:
can I use SIM300 AT command for SIM300D ? Any want has SIM300D Instruction set, pls upload in this Thread, or send me an attack file forward my email tmacvu(at)yahoo.com
thanks in advance.
|
|
| Back to top |
|
|
masood786
Joined: 22 Sep 2007
Posts: 2
Location: Lodhran
|
| 30 Sep 2007 17:23 Re: Sim300 |
|
|
|
Yes SIM300 Commands can also used for SIM300D.
If you are in Pakistan, then I can help you for a SIM300 module,
|
|
| Back to top |
|
|
ychenfei
Joined: 29 Oct 2007
Posts: 1
|
| 29 Oct 2007 12:06 Sim300 |
|
|
|
| Any other information about sim548???
|
|
| Back to top |
|
|
romon_123
Joined: 18 Oct 2007
Posts: 2
|
| 06 Dec 2007 9:05 Re: Sim300 |
|
|
|
hi,
i am using SIM300 modem for GPRS connectivity.
i can configure SIM300 as client and can send & recieve data from my server.
now i like to configure this as server.
how many connections can be served by one modem?
how to setup as server?
it will be great for me, if anyone like to help me
thanks in advance
|
|
| Back to top |
|
|
sreekumar_sh
Joined: 27 Dec 2007
Posts: 2
|
| 27 Dec 2007 7:06 Re: Sim300 |
|
|
|
Hi,
I used SIM300 for GPRS Connectivity and I was able to communicate with my server .I am attaching the AT commands set which is useful in GPRS communication.
sreekumar
|
|
| Back to top |
|
|
romon_123
Joined: 18 Oct 2007
Posts: 2
|
| 27 Dec 2007 19:07 Re: Sim300 |
|
|
|
thanks for your reply..
but is attached at commands for sim300??
thanks
|
|
| Back to top |
|
|
