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Reading about SD cards reminds me of this idea I had. Is it possible at the moment to have a wifi or 4/5g transmitter small enough to fit into a chip within (or

Reading about SD cards reminds me of this idea I had. Is it possible at the moment to have a wifi or 4/5g transmitter small enough to fit into a chip within (or instead to bind to equivalent connectors of) sd cards to automatically upload sd card contents to a hub or router that can sync with the cloud? So that you can effectively have an unlimited capacity sd card? Anyone working on this?

jrockway 7y ago
This has actually been around for many years: http://eyefi.com/ http://eyefi.com/
- Fnoord 7y ago
  IIRC this requires SDIO. Back in the day when I was into this (around the time of the Nokia N810) this didn't work (well) on Linux.
  - kalleboo 7y ago
    Isn't SDIO for when you want the host to get access to the resource? These cards work by inspecting the FAT32 filesystem on the card and separately connecting to wifi uploading the files on their own (so they work with any typical point-and-shoot or DSLR camera)
- geerlingguy 7y ago
  The only difficulty being how the thing is managed and such; I believe for the EyeFi at least, the camera has to have some level of support for the card so it doesn't power it off in the middle of a transmission. Also, microSD's form factor is probably too small to effectively house a reliable antenna, much less the additional WiFi chip. SD is probably the smallest feasible form factor today, and CFExpress and other cards are larger and might afford a little more space.
deleted 7y ago
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dmitrygr 7y ago
Not only does it exist, but it runs linux too: https://www.amazon.com/Transcend-Wi-Fi-Class-Memory-TS32GWSDHC10/dp/B00A659ILQ https://www.amazon.com/Transcend-Wi-Fi-Class-Memory-TS32GWSD... You can run custom code on it: http://dmitry.gr/?r=05.Projects&proj=15.%20Transcend%20WiFiSD http://dmitry.gr/?r=05.Projects&proj=15.%20Transcend%20WiFiS...
- slowhand09 7y ago
  Love this: New (2) from $5,000.00 & FREE shipping. Personally, I used an Eye-Fi card when I needed wifi.
  - mynameisvlad 7y ago
    What do you expect? It's a discontinued, niche product that probably didn't sell a lot to begin with, so aftermarket prices are going to be insanely high.
  - verall 7y ago
    Looks like there are several competing options from other OEMs in the $30-$100 range. Toshiba FlashAir to name one.
  - dmitrygr 7y ago
    toshiba card is identical inside
- toxicFork 7y ago
  Awesome post, thank you!
yjftsjthsd-h 7y ago
You could also use some FUSE filesystem like sshfs to do the same thing in software.
- ohthehugemanate 7y ago
  A lot of the remote FUSE filesystems actually cache to disk and upload asynchronously to avoid noticable latency.
- darkpuma 7y ago
  NFS will give you better performance if you've got a trusted LAN.
gruez 7y ago
Wouldn't the read latency be insane? A quick search say the Q1D1 IOPS for sd cards is between 1000 and 2000. That's 0.5 to 1 ms of latency. A wifi/4g uplink's latency would be orders of magnitude higher, making it unusable.

jrockway 7y ago

This has actually been around for many years: http://eyefi.com/ http://eyefi.com/

Fnoord 7y ago
IIRC this requires SDIO. Back in the day when I was into this (around the time of the Nokia N810) this didn't work (well) on Linux.
- kalleboo 7y ago
  Isn't SDIO for when you want the host to get access to the resource? These cards work by inspecting the FAT32 filesystem on the card and separately connecting to wifi uploading the files on their own (so they work with any typical point-and-shoot or DSLR camera)
geerlingguy 7y ago
The only difficulty being how the thing is managed and such; I believe for the EyeFi at least, the camera has to have some level of support for the card so it doesn't power it off in the middle of a transmission. Also, microSD's form factor is probably too small to effectively house a reliable antenna, much less the additional WiFi chip. SD is probably the smallest feasible form factor today, and CFExpress and other cards are larger and might afford a little more space.

deleted 7y ago

[deleted]

dmitrygr 7y ago

Not only does it exist, but it runs linux too: https://www.amazon.com/Transcend-Wi-Fi-Class-Memory-TS32GWSDHC10/dp/B00A659ILQ https://www.amazon.com/Transcend-Wi-Fi-Class-Memory-TS32GWSD... You can run custom code on it: http://dmitry.gr/?r=05.Projects&proj=15.%20Transcend%20WiFiSD http://dmitry.gr/?r=05.Projects&proj=15.%20Transcend%20WiFiS...

slowhand09 7y ago
Love this: New (2) from $5,000.00 & FREE shipping. Personally, I used an Eye-Fi card when I needed wifi.
- mynameisvlad 7y ago
  What do you expect? It's a discontinued, niche product that probably didn't sell a lot to begin with, so aftermarket prices are going to be insanely high.
- verall 7y ago
  Looks like there are several competing options from other OEMs in the $30-$100 range. Toshiba FlashAir to name one.
- dmitrygr 7y ago
  toshiba card is identical inside
toxicFork 7y ago
Awesome post, thank you!

yjftsjthsd-h 7y ago

You could also use some FUSE filesystem like sshfs to do the same thing in software.

ohthehugemanate 7y ago
A lot of the remote FUSE filesystems actually cache to disk and upload asynchronously to avoid noticable latency.
darkpuma 7y ago
NFS will give you better performance if you've got a trusted LAN.

gruez 7y ago

Wouldn't the read latency be insane? A quick search say the Q1D1 IOPS for sd cards is between 1000 and 2000. That's 0.5 to 1 ms of latency. A wifi/4g uplink's latency would be orders of magnitude higher, making it unusable.