Proxmark3 community

didyouexpectthat

Contributor

Registered: 2018-08-25

Posts: 4

[solved] RDV4: Did I buy a defective one?

Hi everyone,
I bought the RDV4 and after following the instructions, I notice that my LF Antenna @ 134.00 kHz is reporting an unrealistic voltage, and doesn't match examples from other PM3 users.

pm3 ~$ ./client/proxmark3.exe com8
Prox/RFID mark3 RFID instrument
 [ ARM ]
 bootrom: iceman/master/ice_v3.1.0-891-g6967fe66-dirty-unclean 2018-06-26 09:52:13
      os: iceman// 2018-06-26 09:54:28
 [ FPGA ]
 LF image built for 2s30vq100 on 2017/10/25 at 19:50:50
 HF image built for 2s30vq100 on 2017/11/10 at 19:24:16

uC: AT91SAM7S512 Rev B
Embedded Processor: ARM7TDMI
Nonvolatile Program Memory Size: 512K bytes. Used: 240510 bytes (46%). Free: 283778 bytes (54%).
Second Nonvolatile Program Memory Size: None
Internal SRAM Size: 64K bytes
Architecture Identifier: AT91SAM7Sxx Series
Nonvolatile Program Memory Type: Embedded Flash Memory
proxmark3> hw tune
hw tune

Measuring antenna characteristics, please wait...........
No response from Proxmark. Aborting...
proxmark3> hw tune
hw tune

Measuring antenna characteristics, please wait...
# LF antenna: 10.55 V @   125.00 kHz
# LF antenna: -3850108.93 V @   134.00 kHz
# LF optimal: 691535.87 V @   125.00 kHz
# HF antenna: 42.90 V @    13.56 MHz
Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.



proxmark3>

iceman

Administrator

Registered: 2013-04-25

Posts: 9,537

Website

Re: [solved] RDV4: Did I buy a defective one?

Possible sources of error

- mixing different firmware with different client.
- dodgy usb cable,  if you have another one laying at home,  test it.
- Did you take of the antenna and mounted it back the wrong way?
- MaxOS ppl seem to have problems with kext etc,  plenty of issues on GitHub.

Your snippet tells me you have iceman on device and running offical repo client.   Thats a no-no.
how about you compile/flash latest source from RRG repo or offical pm3 repo and test again?

If that doesn't help,

hw status
--
which OS do you run on?

didyouexpectthat

Contributor

Registered: 2018-08-25

Posts: 4

Re: [solved] RDV4: Did I buy a defective one?

Hi iceman.
Thanks for your response.

I am running on Windows 10. The original cable was the one included in-box. I tried another USB cable and received similar readings.
Those are out-of-box reading and I am running the out-of-box firmware. I then removed the antenna and put it back on to see if it would help, but it didn't.  The firmware on it looked recent.

proxmark3> hw status
hw status
#db# Memory
#db#   BIGBUF_SIZE.............40000
#db#   Available memory........40000
#db# Tracing
#db#   tracing ................1
#db#   traceLen ...............0
#db# Fpga
#db#   mode....................HF
#db# Flash memory
#db#   init....................OK
#db#   Memory size.............2 mbits / 256kb
#db#   Unique ID...............0xd567a882a7768d26
#db# Smart card module (ISO 7816)
#db# LF Sampling config:
#db#   [q] divisor.............95 (125 KHz)
#db#   [b] bps.................8
#db#   [d] decimation..........1
#db#   [a] averaging...........Yes
#db#   [t] trigger threshold...0
#db# USB Speed:
#db#   Sending USB packets to client...
#db#   Time elapsed............1500ms
#db#   Bytes transferred.......823808
#db#   USB Transfer Speed PM3 -> Client = 549205 Bytes/s
#db# Various
#db#   MF_DBGLEVEL.............1
#db#   ToSendMax...............-1
#db#   ToSendBit...............0
#db#   ToSend BUFFERSIZE.......2308
#db# Installed StandAlone Mods
#db#    LF HID26 standalone - aka SamyRun (Samy Kamkar)
proxmark3>

Let me try to compile from source and try again. Thanks.

Last edited by didyouexpectthat (2018-09-05 22:34:56)

didyouexpectthat

Contributor

Registered: 2018-08-25

Posts: 4

Re: [solved] RDV4: Did I buy a defective one?

I'm back.

pm3 ~$ ./client/proxmark3.exe com8
Prox/RFID mark3 RFID instrument
bootrom: /-suspect 2018-09-05 21:38:11
os: /-suspect 2018-09-05 21:38:08
fpga_lf.bit built for 2s30vq100 on 2015/03/06 at 07:38:04
fpga_hf.bit built for 2s30vq100 on 2018/08/13 at 21:22:51
uC: AT91SAM7S512 Rev B
Embedded Processor: ARM7TDMI
Nonvolatile Program Memory Size: 512K bytes. Used: 193654 bytes (37%). Free: 330634 bytes (63%).
Second Nonvolatile Program Memory Size: None
Internal SRAM Size: 64K bytes
Architecture Identifier: AT91SAM7Sxx Series
Nonvolatile Program Memory Type: Embedded Flash Memory
proxmark3> hw status
hw status
#db# Memory
#db#   BIGBUF_SIZE.............40000
#db#   Available memory........40000
#db# Tracing
#db#   tracing ................1
#db#   traceLen ...............0
#db# Currently loaded FPGA image:
#db#   fpga_lf.bit built for 2s30vq100 on 2015/03/06 at 07:38:04
#db# LF Sampling config:
#db#   [q] divisor:           95
#db#   [b] bps:               8
#db#   [d] decimation:        1
#db#   [a] averaging:         1
#db#   [t] trigger threshold: 0
#db# USB Speed:
#db#   Sending USB packets to client...
#db#   Time elapsed:      1500ms
#db#   Bytes transferred: 864768
#db#   USB Transfer Speed PM3 -> Client = 576512 Bytes/s
#db# Various
#db#   MF_DBGLEVEL........2
#db#   ToSendMax..........-937665551
#db#   ToSendBit..........0
proxmark3> hw tune
hw tune

Measuring antenna characteristics, please wait.........
# LF antenna: 69.30 V @   125.00 kHz
# LF antenna: 36.44 V @   134.00 kHz
# LF optimal: 69.30 V @   125.00 kHz
# HF antenna: 36.26 V @    13.56 MHz
Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.
proxmark3>

I compiled and flashed the code. Notice the lf is using an older version of fpga_lf.bit and a newer version of fpga_hf.bit. The readings look more realistic now and was actually able to use it. Thank you for the help.

Last edited by didyouexpectthat (2018-09-06 00:03:38)

iceman

Administrator

Registered: 2013-04-25

Posts: 9,537

Website

Re: [solved] RDV4: Did I buy a defective one?

I suggest you edit your first post and add the prefix  [solved] to your title.