Show Posts
Pages: [1] 2 3 ... 234
1  Products / Arduino GSM Shield / Re: DIY Cellphone - dialing tones upon answering a call. on: November 21, 2013, 04:11:14 pm
It looks like it might be that the phone is seeing button presses (which generate tones so you can do things like navigate automated voice menus). Maybe try the button test program and see what output you get?
2  Products / Arduino GSM Shield / Re: Mellis DIY Cellphone on: November 21, 2013, 04:09:40 pm
Did you try the instructions on my site: ?
3  Products / Arduino GSM Shield / Re: Mellis DIY Cellphone = Testing Antenna Connectivity / GSM Debugging - Help on: November 06, 2013, 09:21:18 am
Hmm... the pwrkey line stays low for about 12 seconds (after you press the reset button), right?

If so, sounds like there's a problem with either:
* LED2 (or its connection to the GSM module)
* power and ground to the GSM module (I added a couple of new notes to the Flickr photo to show other ground pins:
* the GSM module itself
4  Products / Arduino GSM Shield / Re: Mellis DIY Cellphone = Testing Antenna Connectivity / GSM Debugging - Help on: November 05, 2013, 01:01:19 pm
You checked the soldering on LED2, too, right?

Do you the pwrkey line change voltage when you reset the microcontroller (with the reset button)? It's a slow pulse, I think, so you should be able to see it with a multimeter.
5  Products / Arduino GSM Shield / Re: Mellis DIY Cellphone = Testing Antenna Connectivity / GSM Debugging - Help on: November 05, 2013, 09:53:37 am
It sounds like the GSM module isn't turning on. You probably didn't fry it (or, at least, that's not the hypothesis I'd start with).  Try checking the solder joints on the GSM module and the microcontroller. I annotated the relevant pins on the image here:

In particular, pwrkey lets the microcontroller turn the GSM module on and off. TX1 and RX1 are used for communication between the microcontroller and the GSM module. And, of course, the GSM module needs power and ground.

Make sure the pins of the component are actually soldered to the board but also that they're not shorted to the pins next to them (except for when there are multiple of the same pin next to each other, as with ground and power).
6  Products / Arduino GSM Shield / Re: Mellis DIY Cellphone = Testing Antenna Connectivity / GSM Debugging - Help on: November 04, 2013, 10:39:14 am
The LED near the GSM module (LED2) should be on, indicating that the GSM module is on. (It should blink off briefly when it's reset from the program running on the microcontroller.)

What do you see in the serial monitor with the main Cellphone sketch uploaded?

Sometimes it takes a while to connect, especially (it seems) the first time. Try uploading the main cellphone sketch and leave the phone for a few minutes. Press the reset button and leave it again. Etc.
7  Development / Suggestions for the Arduino Project / Re: bug with relaxation on mega2560 on: January 02, 2013, 08:47:56 am
Here's a link to the issue for which we included the relax compiler argument:
8  Development / Other Software Development / Re: State of Arduino Ethernet Library on: January 02, 2013, 08:43:18 am
BTW, there are generic Client, Server, IPAddress classes in the core, that various implementations can inherit from to provide a common interface. It probably doesn't share as much as it could but it's something.
9  Using Arduino / Microcontrollers / Re: Arduino 1.0.2 & ATtiny 85 on: December 09, 2012, 10:38:13 am
Sorry, there was a change in 1.0.2 that is incompatible with processors that don't have hardware serial support (like the ATtiny). This will be fixed in 1.0.3.  See: For now, you can use 1.0.1 or change:

#error TXC0 not definable in HardwareSerial.h


#warning TXC0 not definable in HardwareSerial.h

in HardwareSerial.h.
10  Products / Arduino Due / Re: Arduino IDE 1.50 on Mac OS X on: October 23, 2012, 12:37:12 pm
In the Finder, you can right-click on the application and select open. I think there's a dialog box warning, but it has an option to open the application anyway.  From then on, you should be able to launch the application normally.

We're working on getting the application properly signed so that this won't be necessary.
11  Using Arduino / Installation & Troubleshooting / Re: Defective Mac IDE Install on: June 28, 2012, 07:18:48 am
And can you enable verbose output during compilation (in the Preferences dialog) and post the full output here?
12  Using Arduino / Installation & Troubleshooting / Re: Mega 2560 > Me. on: June 27, 2012, 07:36:28 am
Hmm, if blink isn't working there's definitely some issue.  What happens when you try to upload?  What operating system are you on?  Which version of the Arduino software are you using?
13  Using Arduino / Installation & Troubleshooting / Re: Issue installing leonardo drivers on: June 24, 2012, 12:42:57 am
Hmm... what do you see in the Device Manager for the Leonardo?  Is it an official Arduino Leonardo (others may have different USB IDs and require different driver files)? 
14  Using Arduino / Installation & Troubleshooting / Re: Problems with Windows and Arduino UNO rev3 on: June 23, 2012, 10:37:06 pm
You don't need the FTDI drivers because the Uno uses a different USB to serial chip.  Which directory are you indicating when trying to install the drivers?  Make sure it's the main "drivers" directory, not the FTDI sub-directory.
15  Using Arduino / Installation & Troubleshooting / Re: Problem with running Arduino v. 1.0.1 on: June 23, 2012, 10:34:16 pm
There's an issue with the Polish translation that stops the application from running.  See: for more information.
Pages: [1] 2 3 ... 234