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1  Community / Local Groups / Arduino Central PA - Bloomsburg Area on: April 06, 2014, 04:33:25 pm
Just putting something on the radar to see if there's anyone else out there that would like to get together sometime. I'm in Central PA, just outside of Bloomsburg.

Here's a few of my projects...

http://www.shivasongster.com/category/writings/arduino/

Many more things on the way, including some GPRS stuff, and more work with sensors. My dad is also doing some projects with Arduino and Picaxe.


2  Community / Local Groups / Re: Need a consultant for my project on: April 06, 2014, 04:30:03 pm
Are you still looking for help?
3  Using Arduino / Sensors / SensorMote - working from Distributed Network Data book on: March 30, 2013, 10:38:09 pm
I'd like to share my experience with a project from Distributed Network Data – From hardware to data to visualization (a book by Alasdair Allan and Kipp Bradford). My project isn't finished, but I've made quite a bit of progress and would like to know if others are working from the same book.

http://www.shivasongster.com/2013/03/arduino-sensormote-project/

My next step is the wireless piece, hopefully next week after parts arrive.
4  Using Arduino / Audio / Re: Seeed Music Audio Shield on: March 29, 2013, 09:00:23 am
Yeah, I don't know what's up with the zip file, particularly on PC. I thought it was something weird with my config, but if others are having the download/extract problem, then something else is up. I actually had to unzip it on my Mac, then transport the files over my network to my PC. Ridiculous.

I have to be honest, I've all but given up on the Seeed board. It wasted so much time. I spent several hours trying to get it to work from my MacBook. All I ever got was MP3 playback. Then another several hours on my PC - hoping that a completely new Arduino IDE environment would help. I followed all of their instructions (as best I could - they are terribly written). I could still get nothing more than the MP3 playback, no reliable WAV. But experience with some other boards - like Rugged Shield - shows that my WAVs may have some meta data that these shields don't like, so I might go back to that.

http://www.shivasongster.com/2013/03/rugged-audio-shield/

If you like I can send you what I have for the Seeed via Dropbox.
5  Using Arduino / Audio / Artemis Audio Shields on: February 28, 2013, 04:35:05 pm
Has anyone had a chance to work with the Artemis audio shields that recently became available?

ARTEMIS - Wave Sound Shield Module V1.0 -Arduino Compatible - can play up to 14KHz/16bit WAV audio files and 32KHz/16bit AD4 audio files of any length.

ARTEMIS - USB-SD MP3 Shield With 64Mbit Flash And Audio Amplifier - FAT16/FAT32 file system - no other specs - Support 16K~320Kbps MP3 files and 8K~44.1KHz sampling rate WAV files (SPI-FLASH only supports MP3 format)

ARTEMIS High Quality WAV Sound Broadcast Kits - no specs

Why don't companies list full specs for these?
6  Using Arduino / Audio / Re: WavePro Shield - Beta Testers wanted on: February 28, 2013, 04:33:27 pm
Looking forward to this shield. Any updates on production availability? Also, will it definitely do WAV 44.1 Khz, 16-bit or higher?

Please avoid the problems of the Seeed audio shield!

http://www.shivasongster.com/2013/02/arduino-seeed-studio-music-shield-v1-0/

Also interested to know if anyone has played with the Artemis shields that came out recently.

7  Community / Products and Services / Re: Arduino Music Player Shield - Just Plug and Play on: February 28, 2013, 04:03:55 pm
What are the sample rates and bit depths of this shield?
8  Using Arduino / Audio / Re: Seeed Music Audio Shield on: February 27, 2013, 04:14:41 pm
The first time I worked with this board, I was running the Arduino IDE from my MacBook. The original source code from Seeed was very convoluted, and neither of their demos worked. Only after finding corrected code on GitHub did I get the shield working… to some extent. MP3 playback, volume and track forward/backward were fine. WAV playback was not crystal clear, and when playing WAVs, track volume and navigation were also compromised. The selling point of 44.1 Khz, 16-bit WAV playback was the whole reason I purchased this board!

Seeed support was useless and requests for help on Arduino.cc did not result in any groundbreaking tips.

In order to start fresh – and retrace my steps – I came back to the original demos using the Arduino IDE 1.0.3 on my PC. That way I knew I was starting with clean libraries, and could more easily control the testing scenarios without botching other projects.

The first problem I ran into was that the ZIP files for the demos would not download onto a PC running XP with Firefox. So I actually had to download the files onto my MacBook first, then transfer the files to the PC via thumb drive.

The second problem I ran into was that the Seeed sketches were referring to WProgram.h, not Arduino.h. I also had to overcome incompatibilities in the New Serial libraries – help for which is easily found from a number of places by searching on the error codes. I even changed the pins library, even though this was only recommended for Linux users.

Over the course of about 2 hrs, I did some troubleshooting for the 1.4 and 1.7 demo examples. Both tests were performed separately – with only the libraries for the specific test installed at once (because Seeed tells you that the libraries can’t coexist). SD card was freshly formatted, with files in correct format and naming structure.

The first demo (1.4) failed miserably. The sketches compiled, and uploaded, but none of them resulted in playback – MP3 or WAV.

Demo 2 (1.7) eventually worked for MP3s, but WAVs were still played back with extra static and noise, similar to my other experiences with the GitHub code. At times it just sounds like the device is choking on the WAV data, which would make sense since there’s more data to process. No difference running via battery, USB or 9V adapter.

I can only conclude that a) this board is defective, or b) there is a user-definable codec setting somewhere in the Arduino code/library that is simply set incorrectly. Unfortunately, if the problem is a codec setting, I am not experienced enough to track that down. I tried to explore the code/libraries with my basic understanding, hoping there would be some obvious setting, but I didn’t find any. I could be looking for something that doesn’t exist.

For now I have a glorified MP3 player, which I guess is something. Other people have not even gotten this far with this board, but I appear to be the only one who has experienced the WAV issue. I will send a free CD out of my catalog (visit www.shivasongster.com) to anyone who can help me figure this out.

Why do I need WAV playback?
Hi-res MP3 is very good, and in most cases playback from this shield will not happen on a system with suitable 20 Hz-20 Khz speakers for full 44.1 Khz playback. My problem with using MP3 in this case is more about time than it is audio quality. MP3 requires a step for conversion. I’d like to be able to drag/drop WAV content directly from my writing/recording platforms, without the extra step of compressing the files.
9  Using Arduino / Audio / Re: Seeed Music Audio Shield on: January 14, 2013, 06:07:39 pm
Yes, I used the code here to get my Seed Music Shield working:

https://github.com/amperka/music-shield

I had lots of trouble with the stock code supplied, as did many other people from what I could see online. Part of the problem may have been getting all the libraries together. I am not sure. I am not a coder. I needed something that "just works". At the very least an encouraging example that helps me move forward. Seeed is not that type of board, and I am not the only one who said they had trouble. Their instructions are vague and incomplete.

So I have MP3s that play now, but it doesn't play WAVs reliably. I was hoping to get full stereo WAV at 44.1 as advertised.

In my travels I also found a Russian site with some tips:

http://wiki.amperka.ru/звук:mp3-music-shield

In the mean time, I have explored the Sparkfun MP3 trigger, which does not do WAV, but is MUCH easier to work with. You don't technically need an Arduino to run it either. And it has 18 trigger points already set up. I am gradually going through all audio boards available and will post results back here. Appreciate anyone's help.
10  Using Arduino / Audio / Seeed Music Audio Shield on: January 10, 2013, 09:17:55 pm
I'd be interested to hear of any recent (Dec 2012/Jan 2013) experience with the Seeed Music Shield.

Finally (after much web research) I playback for MP3s just fine using code from GitHub. WAV files play, but they are filled with static.

Original files are fine on my computer - 44.1 khz 16 bit WAV.

Anyone else have issues with WAV playback specifically and if so, suggestions on solutions? Seems like a sample rate issue or something, but I am not a programmer and not a coder so I need help getting this to work. Support from company is terrible. I tried increasing the baud rate at the top of my program, but that didn't make a difference.

I've also used the Adafruit shield, which is great, but I need something higher quality and stereo. Currently trying the Sparkfun MP3 trigger v2, ut it only goes up to 192 khz.
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