Modifying Transcend WiFi SD Card Firmware
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Modifying Transcend WiFi SD Card Firmware
1–10 of 16 posts
Re: Modifying Transcend WiFi SD Card Firmware
#2Author here! It was quite a surprise to see one of my old posts on HackerNews.
For those interested in what happened next: I managed to build and run sqlite, rsync, and dropbear SSH on the SD card using buildroot: http://buildroot.uclibc.org/
I quickly moved onto other interests as I couldn't work out any practical applications at the time.
Feel free to reach out to if you have any ideas, or want to pick my brain on this project.
Re: Modifying Transcend WiFi SD Card Firmware
#3Author here! It was quite a surprise to see one of my old posts on HackerNews. For those interested in what happened next: I managed to build and run sqlite, rsync, and dropbear SSH on the SD card using buildroot: http://buildroot.uclibc.org/ I quickly moved onto other interests as I couldn't work out any practical applications at the time. Feel free to reach out to if you have any ideas, or want to pick my brain on…
Could you potentially still use the card in a camera, while it was running linux?
Re: Modifying Transcend WiFi SD Card Firmware
#4Author here! It was quite a surprise to see one of my old posts on HackerNews. For those interested in what happened next: I managed to build and run sqlite, rsync, and dropbear SSH on the SD card using buildroot: http://buildroot.uclibc.org/ I quickly moved onto other interests as I couldn't work out any practical applications at the time. Feel free to reach out to if you have any ideas, or want to pick my brain on…
Could you potentially still use the card in a camera, while it was running linux?
Yup! One of the advertised features for the SD card is being able to stream just-captured photos automatically to the mobile app.
The SD card has a script that monitors filesystem changes, and would push the images via curl to the client connected to it through WiFi.
Re: Modifying Transcend WiFi SD Card Firmware
#5Earlier quoted context omitted.
Could you potentially still use the card in a camera, while it was running linux?
Yup! One of the advertised features for the SD card is being able to stream just-captured photos automatically to the mobile app. The SD card has a script that monitors filesystem changes, and would push the images via curl to the client connected to it through WiFi.
Man, I thought that getting a "yes" back would lead to a Eureka moment for some awesome use case...but the best I've got is just how cool it would be to show off, haha. Amazing work!
Re: Modifying Transcend WiFi SD Card Firmware
#6The commercial WiFi power harvester I remembered would be the perfect partner for a WiFi Spy.
Despite the announcement that "on the CES floor, they were able to charge a BlackBerry from 30% to full in about 90 minutes, using nothing but ambient WiFi signals as a power source. " [1]
The device has never been turned into a commercial product. [2]
[1] http://www.ohgizmo.com/2010/01/09/ces2010-rca-airnergy-charg...
[2] http://www.ohgizmo.com/2011/01/07/ces-2011-hey-rca-hows-that...
Re: Modifying Transcend WiFi SD Card Firmware
#7Does anyone know if the currently available versions of the hardware ( http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3D... ) are still compatible with these modifications?
I ask because frequently identical outward appearance does not mean identical internal hardware, especially on low cost consumer devices.
Re: Modifying Transcend WiFi SD Card Firmware
#8The commercial WiFi power harvester I remembered would be the perfect partner for a WiFi Spy. Despite the announcement that "on the CES floor, they were able to charge a BlackBerry from 30% to full in about 90 minutes, using nothing but ambient WiFi signals as a power source. " [1] The device has never been turned into a commercial product. [2] [1] http://www.ohgizmo.com/2010/01/09/ces2010-rca-airnergy-charg... [2] h…
You can make a very simple GSM signal detector using a germanium diode, an LED, and a bit of wire. Tune the wire by cutting it to the right length (a square with sides of 7.5 cm is fine) and solder the diodes in series. Hold a phone near it and send a text message to the phone.
http://www.creative-science.org.uk/mobile_LED.html
Of course, that's a tiny amount of power but it's still there to be harvested.
Not sure what the legal situation is. In England an "artist" was asked to remove their installation of flourescent tubes in a field below power lines. They similarly harvested power. (I can't find that case using Google :-( but here are plenty of others https://www.google.co.uk/search?q=fluorescent+tubes+power+li... )
Re: Modifying Transcend WiFi SD Card Firmware
#9Author here! It was quite a surprise to see one of my old posts on HackerNews. For those interested in what happened next: I managed to build and run sqlite, rsync, and dropbear SSH on the SD card using buildroot: http://buildroot.uclibc.org/ I quickly moved onto other interests as I couldn't work out any practical applications at the time. Feel free to reach out to if you have any ideas, or want to pick my brain on…
Amazing work, I didn't know there was a complete linux system on this! I guess it's cheaper than having a custom hardware.
Potential use case: turn a simple printer equipped with an sd-card slot (to print photos directly on the printer) into a manual wifi printer. The job would be converted to, say, jpeg, sent on the sd-card and then you would have to print it manually.
Other use case: be able to send any file to this SD card, this way you could easily transfer pictures, videos and music to a non WiFi multimedia device, like a TV Tuner, MP3 Player, etc...
Re: Modifying Transcend WiFi SD Card Firmware
#10The commercial WiFi power harvester I remembered would be the perfect partner for a WiFi Spy. Despite the announcement that "on the CES floor, they were able to charge a BlackBerry from 30% to full in about 90 minutes, using nothing but ambient WiFi signals as a power source. " [1] The device has never been turned into a commercial product. [2] [1] http://www.ohgizmo.com/2010/01/09/ces2010-rca-airnergy-charg... [2] h…
You can make a very simple GSM signal detector using a germanium diode, an LED, and a bit of wire. Tune the wire by cutting it to the right length (a square with sides of 7.5 cm is fine) and solder the diodes in series. Hold a phone near it and send a text message to the phone. http://www.creative-science.org.uk/mobile_LED.html Of course, that's a tiny amount of power but it's still there to be harvested. Not sure wh…
I had a friend who was a phreaker here in the UK and was eventually arrested. At the time there was no Computer Misuse Act. They took hours to read out every "on this date did you make a call to the following number".
He just sat in silence. Eventually he was successfully prosecuted for "Theft of Electricity" from the places he had placed unauthorised phone calls through.