RFID entry system

RFID entry system
Name	ESP RFID door controller
Zone	Infrastructure
Owner	i3Detroit
Make Model	ESP-RFID relay board
Part Number
Date Acquired
Storage Location	Mounted to the wall near the door
Authorization Required	No
Status	Running
Value
IP Address	a side: 10.13.107.15; b side: 10.13.107.167
MAC Address	A side: 58:BF:25:DB:82:7E; b side: 58:BF:25:DC:62:8E
Hostname	a-side-main, b-side-office
Documentation	code we are running programming script HOWTO Program a key
Other References

Intro

This is the door controller that controls access to the building It's an esp-rfid and a weigand 13.6 MHz rfid/keypad

Instructions

TO ENTER:

• Scan your key against the rectangular LED

Keypad on A-side main door

Scan location on A-side main door

Keypad on B-side office door

Scan location on B-side office door

• Type in your PIN
• Press enter
• On successful PIN entry, the door will unlock for 3s, then automatically lock
• No audible feedback is given at this time, just try the door as you type the last digit of your PIN
• If you have entry problems, please contact Mara Furland or Amelia Meyer

TO EXIT:

A-Side Main:

• Press the crashbar as normal

Exit crashbar on A-side main door

• The magnet will re-engage 3s after the bar has been pressed

B-Side Office:

• Press the green EXIT button

Exit button on B-side office door

• The magnet will re-engage 3s after the button has been pressed

Or just use the door handle

Maintenance Info

Door access log is at /var/log/mqtt-door.log but doesn't contain all door events

ToDo

Known esp rfid bugs (not reported to esp rfid because making test cases takes time)

• a user badging in can scan as the previous user occasionally, so it says bad pin
• doors crash a lot when reading the user list

Next steps

1. remove mqtt opendoor functionality
2. write script to open door via websocket
3. more error handling/timeout in the setting script so we can automatically retry in the future

Choices

1. medium term data source: make script to fetch from google, or update seltzer
   • make a script that can automagically pull the spreadsheet, but this is a google permissions issue and I think the best way is to create an account that only has read access to the spreadsheet and use credentials from that and I've been lazy.
   • Update CRM to replace slot with pin, and put all the keys back in the CRM.

Wiring Notes

Keypad connection

From the top of the esp-rfid board the order is

• D0
• D1
• WG (N/C)
• BUZ
• LED
• GND
• VIN
• F1 (N/C)
• F2 (N/C)

colour table

purpose	reader	extension
12V	red	brown
GND	black	brown/white
D0	green	green
D1	white	green/white
LED	blue	blue
beep	yellow	orange
???	grey(not populated on all keypads)	orange/wite
N/C	N/C	blue/white

non-keypad connections

• Button has a button
• Door Stat: not connected
• 12V
• RSW: Not connected, no idea
• RPDW: Connected to magnet coil

RFID Key Formats

There are three formats for the data in our flavour of RFID:

1. 1 26 bit decimal number, just a number, written on keyfobs
2. 2 16 bit decimal numbers, <5 digits>:<5 digits>, currently (2022-07-29) in the CRM and written on the cards.
3. the number but as hex It's what is in the spreadsheet right now.

Converting formats

• To go from hex to decimal: echo 0x05094D8 | perl -nle 'print hex'
  • 0x is optional
• To go from 2 16 bit to decimal: echo 80:38104 | perl -laF/:/ -e 'print (($F[0] << 16) + $F[1])'
• To go from decimal to 2 16 bit:echo 5280984 | perl -ne 'printf "%03d:%05d\n", $_ >> 16, $_ & 0xFFFF'
• Decimal to hex: echo 5280984 | perl -nle 'printf "0x%X\n", $_'

There is also ablog post and Google Sheet about this.