A system made with Arduino and Visual Basic. You have to generate a new username and the program will generate a new password to make it work twice.
Upload the CommuArd file to the Arduino PLC and connect a serial port to your OS. Close the CommuArd window after uploading. Add the rest of the files to the VB application or form compiler. Run the VB program and set the COM port.
Create a new user. The program will generate a new password for you. IMPORTANT: Remember your user and password, else you won't run the last part of the process or recover it until you close the main form. When you accept the msgbox of the new acc, the engine will work once for a few seconds. Finally, re-insert your credentials and make it work twice and repeat.