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136  Using Arduino / Networking, Protocols, and Devices / Re: Web Server example why is it not working for me? on: August 11, 2014, 03:28:27 pm
Right, brief update. I've tried the sketch on the official shield and it shouldn't come as any surprise that it seems to work. I get as far as getting an IP address which will do for me, it proves it's connected. But that's my lot for this evening. I'm using O2 PAYG, I believe GiffGaff use their network.

How far do you get?
137  Using Arduino / Programming Questions / Re: SIM900 programming problems, help needed on: August 11, 2014, 03:03:51 pm
The eBay listing and the 'wiki' page are for subtly different items. Which one have you got? Is the sim card holder on top or underneath?
138  Using Arduino / Programming Questions / Re: SIM900 programming problems, help needed on: August 11, 2014, 09:22:40 am
Which Arduino?

Which SIM900 shield? (Link please)
139  Using Arduino / Networking, Protocols, and Devices / Re: Web Server example why is it not working for me? on: August 11, 2014, 02:24:15 am
Hardly professional!

I've not come across that variant before, and looking at the schematic you can select either D0 & D1 or D2 & D3 for communication, which is probably why the SendSMS sketch works.
140  Using Arduino / Networking, Protocols, and Devices / Re: Web Server example why is it not working for me? on: August 09, 2014, 04:33:08 am
To be honest I have no idea why the examples would would for sending an SMS message.

The pin definitions are held in GSM3SoftSerial.cpp

Unfortunately I don't have a SIM900 based shield on hand this weekend to do any testing!

Could you post a link to the shield you have?
141  Using Arduino / Networking, Protocols, and Devices / Re: Web Server example why is it not working for me? on: August 08, 2014, 09:32:54 am
If you are using the examples provided with the IDE then they are for the official Arduino GSM/GPRS shield, and as distributed use pins 2 & 3 to communicate with the shield.

I don't know which shield you have but the inexpensive SIM900s use pins 7 & 8 (or 0 & 1)  to communicate.
142  Using Arduino / Programming Questions / Re: Error with code from Arduino starter KIT on: August 08, 2014, 08:53:36 am
Code:
  digitalRead(LED, HIGH);

That doesn't look right. Do you mean digitalWrite?
143  Using Arduino / Networking, Protocols, and Devices / Re: GPRS APN, login and password - what is mine? on: August 08, 2014, 05:31:21 am
Are you in the UK?

If so, this page has a list of APN settings:

http://www.mobilez.org/support/apns/uk/
144  Products / Arduino GSM Shield / Re: SIM900 from seedstudio / no internet conection on: August 08, 2014, 04:44:07 am
I would expect your parameters to be something like this, depending on your service provider:

Code:
AT+SAPBR=3,1,"CONTYPE","GPRS"
AT+SAPBR=3,1,"APN","internet.myprovider.com"
AT+SAPBR=3,1,"USER","web"
AT+SAPBR=3,1,"PWD","web"
AT+SAPBR=1,1
145  Using Arduino / Programming Questions / Re: When to use interrupt? on: August 08, 2014, 03:26:36 am
I personally use them with the alarm function of an RTC.

The processor can completely ignore the clock until such time as it receives an interrupt. Then it can divert and go and do whatever it needs to do at that time. Useful if you have the processor in sleep mode. Mr Gammon has an excellent piece on this subject on his site, under power saving.
146  Using Arduino / Installation & Troubleshooting / Re: Which GSM Shield? SIM900 and Arduino GSM differences? on: August 08, 2014, 02:10:31 am
You can access the internet with both devices. However, if you live in an area with poor coverage you might do better with the Arduino one.
147  Products / Arduino GSM Shield / Re: SIM900 from seedstudio / no internet conection on: August 08, 2014, 02:01:51 am
Is the APN parameter the real one you use or have you inserted dummy data?
148  Using Arduino / Installation & Troubleshooting / Re: Which GSM Shield? SIM900 and Arduino GSM differences? on: August 07, 2014, 10:22:50 am
Personal experience?

The Arduino shield connects to the network when the SIM900 shields won't.

The Arduino one has a library which is included as part of the IDE.
149  Using Arduino / General Electronics / Re: Altering pressure transducer voltage signal on: August 07, 2014, 10:10:08 am
Would a voltage divider work?
150  Using Arduino / Programming Questions / Re: my code doesn't work on: August 07, 2014, 09:21:09 am
Quote
thanks you are a great moderator you are the man

I wouldn't go that far but usually he's ok.  smiley-lol

I would also point out that he was the first person to try to help you. If you don't understand the answers then either Google it or ask about the part you don't understand. Nobody minds helping someone who is trying to help themselves.
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