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1  Using Arduino / Microcontrollers / Can the SPI pins on the Arduino Micro be used as regular digital I/O pins? on: July 18, 2014, 08:03:02 pm
And if so, what would they be? D14, D15, etc?
2  Using Arduino / Programming Questions / AT command to check messages on: September 08, 2013, 05:57:13 pm
I'm working with a GPRS shield and an Arduino, and I want a way to check and see if there are any messages being stored on the SIM card. I know I can do that with the AT command AT+CMGL, but then I need a way to check the output and see if there are messages there or not, using Software Serial. How would I do that?
3  Using Arduino / Programming Questions / Re: Extracting Data from SoftwareSerial on: September 02, 2013, 10:00:18 pm
mrbrunette: Unless I am mistaken, it seems as though that library is for Serial, not SoftwareSerial. Do you know of a similar library/commands for SoftwareSerial?
4  Using Arduino / Programming Questions / Re: Extracting Data from SoftwareSerial on: September 02, 2013, 09:45:28 pm
tigerbomb8:

To answer your question, I'm using two Arduinos, and each one has a GPRS shield. The first Arduino has an FSR (force-sensing resistor—basically a pressure sensor) attached to it, and I'm storing the values it produces when it's squeezed into an array. I then send the array of values to the other Arduino, using the SoftwareSerial library. I will need to parse those values so that I can map them to a servo and make the servo rotate a corresponding number of degrees.

Did all that make sense? If I wasn't clear, or you need more information, please tell me.

In terms of an output example, the values are between 125 and 250, and they are separated by a newline character, so they are all on separate lines. So an output example is always going to be a list of values between those two numbers, and it will never be more than 100 values, because I have the maximum value of the array set to 100.
5  Using Arduino / Programming Questions / Extracting Data from SoftwareSerial on: September 02, 2013, 06:39:19 pm
If I have an array of values being sent to me through the Software Serial library, and I want to extract the array so that I can use those values (i.e. for something such as mapping them to a servo), how would I go about doing that?
6  Using Arduino / Project Guidance / SoftwareSerial and Servo Library Conflict on: August 17, 2013, 07:06:34 pm
Hello,

I'm working on a project that requires use of both SoftwareSerial and Servo libraries. However, I've been learning that the two conflict with each other, since SoftwareSerial disables all interrupts, on which Servo relies heavily.

Has anybody here successfully found a workaround for this issue, and if so, what is it?
7  Using Arduino / Networking, Protocols, and Devices / Receiving SMS on SIM900 on: August 15, 2013, 09:24:26 pm
Hello,

I have a SeeedStudio GPRS module, which uses a SIM900 card. I have successfully gotten it to send messages, but now I need to get it to receive them. How can I do that? What AT commands do I need to use?
8  Using Arduino / Programming Questions / Receiving SMS on SIM900 on: August 15, 2013, 08:49:17 pm
Hello,

I have a SeeedStudio GPRS module, which uses a SIM900 card. I have successfully gotten it to send messages, but now I need to get it to receive them. How can I do that? What AT commands do I need to use?
9  Using Arduino / Programming Questions / USB Host Shield and Barcode Scanner on: August 12, 2013, 01:52:43 pm
Hello,

Has anyone here had any success getting the USB Host Shield (https://www.sparkfun.com/products/9947) to work with a barcode scanner? I'm trying my best, using the code examples on this website http://www.circuitsathome.com/mcu/connecting-barcode-scanner-arduino-usb-host-shield but to no avail. Anybody here have any tips? Thanks.
10  Using Arduino / Programming Questions / Re: USB Host Shield + Barcode Scanner on: August 08, 2013, 11:20:46 pm
Also, when I try to run the program USB_desc.pde from this library, the code won't compile: https://github.com/felis/USB_Host_Shield_2.0

It says "Error compiling" and:

"In file included from USB_desc.pde:5:
/Users/ahhreeyell/Documents/Arduino/libraries/Usb/Usb.h:41:21: error: message.h: No such file or directory"

What's going on?
11  Using Arduino / Programming Questions / Re: USB Host Shield + Barcode Scanner on: August 08, 2013, 10:44:24 pm
I just installed confdescparser.h, and I'm not quite sure how to acquire the other three, or if I already have them and I just don't know it. Still getting the exact same error. Thoughts?
12  Using Arduino / Programming Questions / Re: USB Host Shield + Barcode Scanner on: August 08, 2013, 10:16:44 pm
Never mind, I just noticed that I didn't download or install Arduino.h, inttypes.h, avr/pgmspace.h, or confdescparser.h. Gonna install those libraries and report back to y'all.
13  Using Arduino / Programming Questions / USB Host Shield + Barcode Scanner on: August 08, 2013, 10:07:45 pm
Hello all,

I just purchased this USB Host Shield: https://www.sparkfun.com/products/9947 and I've connected it to a barcode scanner (the Taotronics TT-BS003: http://www.amazon.com/electronics/dp/B006LVO56W).

I'm trying to run the code example from this tutorial on my Arduino, but it doesn't seem to be working: http://www.circuitsathome.com/mcu/connecting-barcode-scanner-arduino-usb-host-shield I keep getting the error message: "expected class name before '{' token," and it highlights Line #59. Anybody understand what's going on? I've installed all the libraries and copied them into the project folder, too.

Thanks!
14  Using Arduino / Motors, Mechanics, and Power / Actuators on: July 25, 2013, 03:50:23 pm
Hello everyone,

I'm working on a project involving these actuators:
http://www.firgelliauto.com/product_info.php?cPath=114&products_id=232
http://www.firgelliauto.com/product_info.php?cPath=110&products_id=286
http://www.firgelliauto.com/product_info.php?cPath=90&products_id=112

I need something to reverse their motion. Can I just use an H-bridge, or do you recommend using a motor shield for it instead, like the Monster Motor Shield on SparkFun? Also, how can I figure out whether it will conflict with the USB shield that I'm using?
15  Using Arduino / Networking, Protocols, and Devices / SeeedStudio GPRS Shield on: July 23, 2013, 10:15:20 am
Hello everyone,

I'm working with a SeeedStudio GPRS shield: http://www.seeedstudio.com/wiki/GPRS_Shield_V1.0

I've managed to get it to send SMSes and phone calls, but I haven't yet gotten it to receive any data. I've tried example code (it's on my home computer, I'll post it when I get home), and I tried changing the "#define _SS_MAX_RX_BUFF" line in the SoftwareSerial library from 64 to 128 bits, but to no avail. Anybody know how to get it to receive data? Thanks.
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