BlokMotiv

A physical/digital tagging system that enables transparency and traceability through aggregated identity and shared truth

Packages used

Download these packages before you run the code.

• Node JS (https://nodejs.org/en/)
• Express JS (https://expressjs.com/)
  • npm install express --save
• Serialport JS (https://www.npmjs.com/package/serialport, v4.0.7) <-- Make sure to install v4.0.7, and NOT the latest version, v5.0
  • npm install serialport@v4.0.7
• Socket I/O (https://socket.io/)
  • npm install socket.io
• Merkle Tools JS (https://github.com/Tierion/merkle-tools)
  • npm install merkle-tools --save

Other code references used:

• Sparkfun Simultaneous RFID Tag Reader Library (for Arduino: https://github.com/sparkfun/SparkFun_Simultaneous_RFID_Tag_Reader_Library)
• Tierion Data API (https://tierion.com/docs/dataapi)

How to Run Code

1. Upload 'Manufacture' code into 1 Arduino

   • File name: arduino.ino
   • Set line 87 to "Serial.println('w')"
   • Upload file to Arduino

2. Upload 'Install' code into another Arduino

   • File name: arduino.ino
   • Set line 87 to "Serial.println('r')"
   • Upload file to Arduino

3. Connect Arduino (w/ RFID readers attached) to computer

4. Go to ./finalAssets/

5. Run server

   • In terminal, run "node server.js"
   • Currently, server is running on localhost:8000

6. Open index.html in browser

Bill of Materials

1. Arduino Uno - R3 (https://www.sparkfun.com/products/11021)

   • Part: DEV-11021
   • Quantity: 2

2. SparkFun Simultaneous RFID Reader - M6E Nano (https://www.sparkfun.com/products/14066)

   • Part: SEN-14066
   • Quantity: 2

3. Arduino Stackable Header Kit (https://www.sparkfun.com/products/10007)

   • Part: PRT-10007
   • Quantity: 2

4. UHF RFID Tag - Adhesive (Set of 5) (https://www.sparkfun.com/products/14151)

   • Part: WRL-14151
   • Quantity: 2

5. Cable A to B - 6 Foot (https://www.sparkfun.com/products/512)

   • Part: CAB-00512
   • Quantity: 2

6. Wall Adapter Power Supply - 5V DC 2A (Barrel Jack) (https://www.sparkfun.com/products/12889)

   • Part: TOL-12889
   • Quantity: 2

Hardware Assembly Instructions

1. Carefully solder pins from Arduino Stackable Header Kit onto the SparkFun Simultaneous RFID Reader - M6E Nano board

   • For detailed information on the SparkFun Simultaneous RFID Reader - M6E Nano including how to interface with it, check out this guide
   • Please note that the most important pins on the SparkFun Simultaneous RFID Reader - M6E Nano board are as follows:
     • RX (Digital 0), TX (Digital 1), Digital 2, Digital 3 - communication
     • Digital 9, Digital 10 - buzzer
     • 5V + GND - power

2. Gently mount the SparkFun Simultaneous RFID Reader - M6E Nano shield to the Arduino

   • Pins tend to bend easily, so ensure careful alignment

3. Plug the cables

   • Connect the Cable A to B - 6 Foot USB cable to the computer and then the Arduino
   • Next plug the Wall Adapter Power Supply - 5V DC 2A (Barrel Jack) into the Arduino

4. In the Arduino IDE, open the “Read_EPC” example sketch (File → Examples → Sparkfun Simultaneous RFID Tag Reader Library → Example2_Read_EPC)

   • Upload “Read_EPC”
   • Test with the Arduino Serial Monitor

5. Open our custom software (“arduino.ino”)

   • Upload
   • Test with the Arduino Serial Monitor
   • Follow the "How To Run" section

Demo Setup Instructions

1. If you would like to clear the local database, clear it by deleting finalAssets/db.json. The server script automatically creates an empty db.json file if none exists in the main folder.

2. When you have an empty db.json, scan all 6 permutations of any particular airbag assembly into the Manufacture Arduino (labelled A). Since each bag has 3 tag, you do so by scanning each tag sequentially, for all possible sequences.

• This stores the IDs of all possible scan orders into the database.

3. Do not scan the airbag labelled B on the Manufacture Arduino - or it will record it as a legitimately manufactured airbag.