View source for R16-7B UHF RFID Reader

== Wiring Diagram ==

=== DC Jack ===

* center positive
* 7VDC - 12VDC input

=== RS-232 ===

{| class="wikitable"
! DE9 Pin
! Wire Color
! Function
! Direction
|-
| 2
| green
| RXD
| RFID &rarr; PC
|-
| 3
| white
| TXD
| RFID &larr; PC
|-
| 5
| black
| GND
| RFID &harr; PC
|}

=== Flying Leads ===

{| class="wikitable"
! Wire Color
! Function
! Direction
|-
| black
| GND
| RFID &harr; PC
|-
| red
| 7 - 12VDC
| RFID &larr; PC
|-
| green
| RS-232 RXD
| RFID &rarr; PC
|-
| white
| RS-232 TXD
| RFID &larr; PC
|-
| grey
| Wiegand D1
| RFID &rarr; PC
|-
| purple
| Wiegand D0
| RFID &rarr; PC
|}

== Software ==

There seems to be variants of two different pieces of "demo" software -- one written in C++ that can interact with the device over USB, and another written in Java.

TODO

== Protocol ==

=== USB ===

* USB HID device (claims to be a keyboard maybe?)
* VID:PID is <code>0xffff:0x0035</code>

=== RS-232 ===

TODO

=== Wiegand ===

[https://en.wikipedia.org/wiki/Wiegand_interface Wiegand interface - Wikipedia]

== Online Resources ==

[http://www.weisonrfid.com/index.php?m=home&c=View&a=index&aid=83 R16-7DB_响应式充电桩设备外贸网站模板]

[http://www.weisonrfid.com/index.php?spm=a2g0s.imconversation.0.0.68073e5fqoJpOA&m=home&c=Lists&a=index&tid=4 download_响应式充电桩设备外贸网站模板]

[https://www.sycreader.com/en/2768/ R16-7DB | SYCREADER]

[https://www.sycreader.com/en/services-support/sdk/ Software tool | SYCREADER]

[https://www.syntekrfid.com/rfid-reader/uhf-rfid-reader/r16-7db-uhf-rfid-reader.html China Customized R16-7DB UHF RFID Reader Manufacturers, Suppliers, Factory - Free Sample - SYNTEK]

[https://www.syntekrfid.com/rfid-reader/uhf-rfid-reader/long-range-uhf-rfid-reader.html China Customized Long Range UHF RFID Reader Manufacturers, Suppliers, Factory - Free Sample - SYNTEK]

[https://blog.ironsm4sh.nl/post/2023-06-01-Protocol-reverse-engneering/article/ Reverse engineering an USB protocol]

[https://ciko.io/posts/rfid/ Finding lost items with RFID - ciko]

[https://github.com/merbanan/rfid_app merbanan/rfid_app: Linux version for China 125kHz rfid reader/writer (RFID_APP_EN) | GitHub]