“Long Range” Proxcard Reader

I recently purchased a Proxmark3 clone from GeZhi Electronic. Being able to duplicate a proxcard is very cool, but the requirement to have almost direct contact between the card and the antenna is a less than desirable situation during a real world penetration test.

This project was inspired by “HID Reader + Arduino = RFID Card Catcher” (http://colligomentis.com/2012/05/16/hid-reader-arduino-rfid-card-catcher/) and “ProxClone – Long Range Reader / Cloner” (http://www.proxclone.com/Long_Range_Cloner.html), while being frustrated by both.

Following the instructions from the former will result in a failed project and a burnt out MicroSD card, while the latter doesn’t provide enough details to recreate it.

Here’s the overview, I’ll post a step-by-step later.

Parts List

  1. HID 5375AGN00 MaxiProx (https://www.hidglobal.com/products/readers/hid-proximity/5375)
  2. 10pcs RFID 125KHz Writable Rewrite T5567 T5577 thick card (eBay)
  3. Proxmark3 (http://www.xfpga.com/html_products/proxmark3-20.html)
  4. Proxmark3 LF antenna (http://www.xfpga.com/html_products/proxmark3-lf-ant-22.html)
  5. Pro Micro – 3.3V/8MHz (https://www.sparkfun.com/products/10999)
  6. Breakout Board for microSD Transflash (https://www.sparkfun.com/products/544)
  7. Serial Enabled 16×2 LCD – White on Black 5V (https://www.sparkfun.com/products/9395)
  8. Breadboard Power Supply Stick 5V/3.3V (https://www.sparkfun.com/products/10804)
  9. JST Jumper 3 Wire Assembly (https://www.sparkfun.com/products/9915)
  10. Battery Holder – 4xAA Square x3 (https://www.sparkfun.com/products/552)
  11. Breadboard – Mini Modular x3 (https://www.sparkfun.com/products/11662)
  12. Break Away Headers – Straight (https://www.sparkfun.com/products/116)
  13. Supplies


  1. 192.57 from eBay
  2. 13.99 from eBay
  3. 188.00
  4. 15.00
  5. 19.95
  6. 9.95
  7. 24.95
  8. 14.95
  9. 1.50
  10. 5.85
  11. 11.85
  12. 1.50
  13. 1.00

Total: $501.06


BAT: Battery – 12 volts worth
HID: HID 5375AGN00 MaxiProx
LCD: Serial Enabled 16×2 LCD
PM: Pro Micro 3.3V/8MHz
PS: Breadboard Power Supply Stick 5V
SD: Breakout Board for microSD

BAT+          <>      HID TB1-1 (+DC/RED)
BAT-           <>      HID TB1-3 (GND/BLK)
PM Pin 2     <>      HID TB2-1 (DATA0/GREEN)
PM Pin 3     <>      HID TB2-2 (DATA1/WHITE)
PM RAW     <>      PS 5+
PM GND      <>      PS GND
SD CS         <>      PM Pin 10
SD DI          <>      PM Pin 16
SD VCC      <>      PM VCC
SD SCK      <>      PM Pin 15
SD GND      <>      PM GND
SD DO        <>      PM Pin 14
LCD RX       <>      PM Pin 4
LCD 5V       <>      PS 5V+
LCD GND    <>      PS GND


HID Sketch (http://wirefall.com/HID_sketch.txt)

Additional Details

I am still having tuning issues with the antenna and can only get about a 1-foot range.

The following pictures are from a bench power supply with a prototype breadboard.

Waiting for a card…


Card present…





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