1, 2, 3, 4, 5, 6. Independent weight scales. Each consists of the load cell and Load cell - Modbus converter (PCB w/o housing)
7. DIN enclosure with Raspberry PI3 B+ inside.
8. IOTON PI-FACE (my interface for Raspberry PI with RS485, RTC, UPS, power controller, WATCHDOG, GPIO connector for modules e.t.c.) 
9. IOTON DIO4.1 (my universal isolated I/O module)
10. OMRON E3S-X3CE4 (photoelectric switch)
11. LED traffic light for the driver.
12. IP camera for the license plate recognition.
13. Truck model (I need to add one more axle)
14. Interchangeable license plate model.