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Hope I don't dissapoint saying this is Theory, not something I've done or will even attempt myself.
Surely it's possible to attach an a an extra peice of hardware to the Proxmark3 to make a simple serial port interface. Then using a peice of electronics like http://www.sparkfun.com/commerce/produc … cts_id=582 and programming a simple serial protocol for the Proxmark3 it could become wireless.
If so it'd make life pretty easy for using a Mobiles to access the hardware and read tags, etc.
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In theory all you'd have to do is attach one of the two serial ports (RS232) of the ARM to the BlueSMiRF module and write some software support to handle comms over serial instead of (as well as) USB.
In practice however the board wasn't designed with RS232 comms in mind and as such the possible pins (PA 6, 21, 22) for the RS232 have already been assigned to other functions so this wouldn't be possible without some circuit surgery. Or you'd have to use the existing spare pins but do the RS232 in software by bitbanging (ugly).
Perhaps in some new version of the board. Actually speaking of that, is anyone keen to start a collaborative project on a redesign? Is there even any demand for a new and improved platform? I know there have been some attempts (CynergySystems, BizonGod) but they are doing that on their own so there's no community input or discussion on the design, features, etc.
If there was a hardware project, I'd be keen to get involved and contribute. I can do electronic design (mainly digital, not so much analog/RF), even Eagle work (schematic/PCB, including library part creation), contribute with parts selection, trundle through datasheets, etc
Last edited by d18c7db (2009-04-16 02:10:06)
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I had the same idea 5 years later.
LOL: http://www.proxmark.org/forum/viewtopic … 918#p10918
My question is: How much is it complicated to allow the arm firmware to communicate on a simple serial protocol? I know that usb is a serial protocol but i suppose there is a software layer on the arm delegated for the usb driver.
about the pins: pin PA6 is not free (pck0) but pins PA21, PA22 (MUX hi and low) are free on my board (the board that i'm thinking to).
So how much is it complicated to implement on the arm firmware, the serial communication on these pins?
Could pin PA21 and PA22 be the 232 serial line TX and RX?
Is someone interested to write the firmware?
may be i can make some boards and send to the developer.
Last edited by gaucho (2014-04-19 22:20:54)
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I might be interested at a later stage - one idea though - afaik arm can comm via spi. If we would add some interface there we could eventually communicate via bt, wifi, whatever other module with spi we like. We just need some code and some üins to connect spi.
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this schematic show an evaluation board for the sam7s chip: https://www.olimex.com/Products/ARM/Atm … ematic.pdf
this schematic show how to connect the evaluation board to a bluetooth module: http://en.wikipedia.org/wiki/File:WillW … ematic.png
they used PA6/TXD0(pin34) as TX, while PA7/RTS0(pin32) is used as RX . Why they didn't used the PA5/RXD0(pin35)? it's for sure a error in the schematic. For sure they must use the RXD0 since the RTS is an output, not an input.
since PA6 is used on our board,
could we use the PA22/TXD1(pin14) for the TX and the PA21/RXD1(pin 11) for RX ?
I think yes.
Could someone confirm?
@enio: for "at later stage" what do you mean?
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Im interested in connecting pm via bt but I want to do the hf sniff first.
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Im interested in connecting pm via bt but I want to do the hf sniff first.
good choice.
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moving the muxels to spare pins, and using 22/21 is fine. the wii bluetooth schematic is a typo. it is rxd0/tdx0
maybe the CC2540 ble?
Last edited by charliex (2014-04-24 23:35:42)
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looking at mouser.com i see that the cheap one is about 7€ (without antenna and oscillator)
the CC2540 is about 14€
This one for 10€ includes antenna, microcontroller, oscillator and antenna: http://media.digikey.com/pdf/Data%20She … Series.pdf
Something cheaper?
Last edited by gaucho (2014-04-25 14:34:42)
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http://www.newark.com/texas-instruments/cc2540f128rhat/ic-bluetooth-ble-soc-128kb-40/dp/12T2857?CMP=AFC-SF-T11
$3.75 at element14
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There is bluetooth dongle on amazon for 1.39 USD+free shipping. Maybe you can use it. See the teardown:
https://www.youtube.com/watch?v=_QArjsdfla0
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http://www.newark.com/texas-instruments/cc2540f128rhat/ic-bluetooth-ble-soc-128kb-40/dp/12T2857?CMP=AFC-SF-T11
$3.75 at element14
it requires external antenna (or pcb design for it) external components and crystal.
Everything can be designed, but i think that a easy inplementation could be made with a ready to use bluetooth module, like the one that i linked. It has few risks and you can decide if mount it on the pm3 or not. You could also leave the pins free, and manufacture the board without bluetooth module. adding it only if required by the customer.
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even with the jellybeans and xtal's it'll be under the price of the module, also its SPI and BLE so for my money, it's a better choice than a uart module with Bluetooth 2.1
but YMMV
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i never designed bluetooth circuit. bluetooth antenna.. if we can find an open source board with ready to use circuit and pcb design it could be easyer.
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TI provide all that information.
http://www.ti.com/product/cc2540
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If you want bluetooth connectivity, you might want to consider using the HC06/HC05 modules.
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Have a look at this low power chip EM9301.
Official PDFs including test board and xtal choice.
It can be found embedded in those modules.
I was not able to find the price, only inquiries.
There is also this kickstarter project: https://www.kickstarter.com/projects/gu … ref=search that will end in 6 days.
THIS also seems to be a good project (firmware source code - Android app source code).
Last edited by asper (2014-04-26 08:24:41)
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TI provide all that information.
http://www.ti.com/product/cc2540
it seems to me that it's needed a study.
A ready to use PCB project on Eagle or Altium could be better. We could save the learning curve of bluetooth circuit design.
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If you want bluetooth connectivity, you might want to consider using the HC06/HC05 modules.
I agree with you. this seems to me a good solution:
http://www.ebay.com/itm/30ft-Wireless-B … 4853f51786
i'ts less than 4€ shipment included
it interfaces with AT commands, if i well understood from here: http://makezineblog.files.wordpress.com … etooth.pdf
Last edited by gaucho (2014-04-26 11:15:57)
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Have a look at this low power chip EM9301.
Official PDFs including test board and xtal choice.
It can be found embedded in those modules.I was not able to find the price, only inquiries.
Me too, i can't find it ready to sell. (may be the module it could be better than the chip)
There is also this kickstarter project: https://www.kickstarter.com/projects/gu … ref=search that will end in 6 days.
it's expensive. what chip they use?
THIS also seems to be a good project (firmware source code - Android app source code).
It is the module that i linked on this thread. i found it for about 10€ http://www.ebay.it/itm/BTM-182-Bluetoot … 3a8f6c3dee
the good thing is that there is the FW to interface it with our arm. the problem is the price. no way.
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charliex wrote:TI provide all that information.
http://www.ti.com/product/cc2540
it seems to me that it's needed a study.
A ready to use PCB project on Eagle or Altium could be better. We could save the learning curve of bluetooth circuit design.
There are Gerbers, and design files for all the boards in that link.
There is also the TI wiki.
http://processors.wiki.ti.com/index.php/CC2541_Breakout_Board
no need to study....
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