POST#7 How To Make Key Scanner In 15 Minutes? (Step By Step)

Finally our build for raspberry is ready. We are super excited to share it with you. Take your raspberry and get to work. When you are done take picture of your project and post on instagram with @theiotproject mark.

stage 1: ON DESKTOP

Download balenaEtcher and the latest raspbian OS (without desktop)
Flash OS on SD card using balena.

After installation skip the validation process
Flash completed

stage 2: raspberry configuration

Now plug everything up to the raspberry pi: SD card, module & sensor, ethernet, keyboard, QR scanner, hdmi, and power cable.

If you are not sure about pins for the motion sensor and module (cause you are using a different raspberry) search the internet for the “pinout” of your device model.

When everything is plugged the raspberry will turn on automatically.

stage 3: raspbian setup

Choose your language and keyboard layout
Create a user and type a password

stage 4: commands

sudo su
passwd root (the system will ask you for a password)
update repositories using: apt update
Install dependencies using: apt install python3 python3-pip socat git mosquitto (the system may ask you for more updates. Type Y)
Install essential python modules: pip3 install rpi.gpio pyserial paho-mqtt
Copy our repository: git clone https://github.com/theiotproject/key-scanner
Enter cloned folder using: cd key-scanner
Install current release using: dpkg -i KeyScanner (press tab to autofill and enter)
Enable scanner service to start on boot: systemctl enable scanner
Start the service: systemctl start scanner
Wait 20 seconds before next step in order to properly start the app
Scan this configuration QR code using QR scanner(the code format is CONF:{your magic code},{your teamnumber},{your serial number};
For now, you can use this example code, but make sure to change it, if you are gonna use the lock. You can also create the config code in our mobile app Virtual-key.

stage 5: scanner config

Scan this QR code using QR scanner

In console:

Restart the scanner to apply configured data: systemctl restart scanner
You can check if the data got applied succesfully using: cat /etc/KeyScannerconf/magic.guid (rewrite on PC, everything to root or user name)

stage 6: qr code generator

Every lock is able to be opened using the MAGIC code, so make sure to make it as private as possible. You can chceck if the gate is working propperly by generatig the magic qr code.
Open https://en.qr-code-generator.com on your PC and type:
MAGIC:your_magic_guid; (rewrited data from previous step)
Generate QR

stage 7: working test

Scan this code and wait till the module on raspberry will turn on (red diode). It’s proof that everything is working well.

additional command

cat /var/log/syslog (it will show you the latest usage of lock: OPEN/LOCK)