Do Wi-Fi SD cards work inside DAPs without Wi-Fi hardware?
Apr 28, 2015 at 6:30 AM Thread Starter Post #1 of 1

seeteeyou

Living encyclopedia of product accessories.
Joined
Jun 13, 2012
Posts
1,727
Likes
341
I didn't purchase any Wi-Fi SD cards yet, that's why I'm really curious about their Linux operating system
 
https://lemoidului.wordpress.com/2013/03/18/linux-is-everywhere_pqi-aircard-partie-iv-flash-it/
http://fernjager.net/post/modifying-transcend-wifi-sd-card-firmware/
http://hackaday.com/2013/08/12/hacking-transcend-wifi-sd-cards/
 
Recently there are some micro SD adapters and they're Wi-Fi enabled
 

 
That should cost $35 or so
 
http://www.monoprice.com/Product?c_id=117&cp_id=11709&cs_id=1170901&p_id=11444
http://journal.nearbennett.com/2014/12/07/monoprice-wi-fi-microsd-adapter-review/
 
Another one from PQI
 
http://www.dpreview.com/articles/4573938986/pqi-air-microsd-to-sd-adapter-gets-reviewed-by-dcwatch
http://www.pqigroup.com/prod_in.aspx?mnuid=1286&modid=138&prodid=426
 

 

 
Some of the best sounding DAPs (e.g. Altmann Tera-Player and PAW Gold etc.) don't have Wi-Fi hardware to begin with.
 
However, are they compatible with Wi-Fi SD cards or not? I wasn't exactly sure because those cards should be designed for something like a digital camera.
 
Let's say Wi-Fi could be enabled while the DAP itself is also powered on, it would be mighty interesting to put some files on the 4GB micro SD card before we insert that into this
 
rOeFook.png

 
1_filler.wav
 
2_actual.wav
 
3_filler.wav
 
4_actual.wav
 
5_filler.wav
 
6_actual.wav
 
7_filler.wav
 
8_actual.wav

 

 
The ones with odd numbers are completely silent and obviously they're designed for a buffer. Those files won't be replaced by anything at all.
 
And then the ones with even numbers could be constantly replaced with real music via Wi-Fi connections, depending on what we'd like to play.
 
Let's say we're playing Hotel California, we could create an Android / iOS app to copy the first half via Wi-Fi
 
1_filler.wav = silent track (no changes)
 
2_actual.wav = "Hotel California"
 
3_filler.wav = silent track (no changes)
 
4_actual.wav = "New Kid in Town"
 
5_filler.wav = silent track (no changes)
 
6_actual.wav = "Life in the Fast Lane"
 
7_filler.wav = silent track (no changes)
 
8_actual.wav = "Wasted Time"


 
And then we wanna play the second half, that Android / iOS app could simply replace 2nd / 4th / 6th / 8th track as follows
 
1_filler.wav = silent track (no changes)
 
2_actual.wav = "Victim of Love"
 
3_filler.wav = silent track (no changes)
 
4_actual.wav = "Pretty Maids All in a Row"
 
5_filler.wav = silent track (no changes)
 
6_actual.wav = "Try and Love Again"
 
7_filler.wav = silent track (no changes)
 
8_actual.wav = "The Last Resort"


 

 
Of course we could also simplify that like this
 
1_filler.wav
 
2_actual.wav


 

 
Drawbacks are power consumption of Wi-Fi SD cards, and then no gapless playback anymore. 4GB micro SD cards should cost next to nothing these days, the wear and tear of overwriting files won't be a concern IMHO.
 
The greatest part is the ability to create playlist(s) for Tera-Player since it doesn't have a screen it the first place, we're essentially outsourcing that particular part if Wi-Fi SD cards were working.
 
Do you guys think it's relatively simple to design something like this? Maybe the challenge is looking for a developer who's willing to get the Android / iOS app done without asking for too much in return.
 

Users who are viewing this thread

Back
Top