# Weighing Scale Data Logger

> Turns an existing RS232 scale into a connected station - weight and a scan together, shown on a jumbo display and published over Bluetooth LE.

- **Page** - https://iotready.com/hardware/weighing-scale
- **Family** - [Dimensioning, Weighing & Scanning](https://iotready.com/hardware/family/dimensioning)
- **Form factor** - Station
- **Datasheet** - https://iotready.com/downloads/weighing-scale-datasheet.pdf

## At a glance

- **20×4** Jumbo LCD display
- **8** RGB status LEDs
- **7–24 V DC** Supply range
- **4.2** Bluetooth LE

Sits between an existing weighbridge or bench scale and the application that
needs the number. It reads weight over RS232 from any scale with a text-based
protocol, pairs it with a scanned barcode or RFID tag, shows both on a jumbo
operator display, and publishes the result over Bluetooth LE. A site keeps the
scale it already owns and gets structured, operator-verified capture from it.

The link runs both ways. An application can push a supplier name and SKU to the
display, freeze a submitted weight on screen, set a software tare, drive the
PASS/FAIL LED array from an API response, and print a label, none of which needs
the operator to touch a keyboard.

## Specifications

| Parameter | Value |
| --- | --- |
| Compatible scales | Any desktop or floor-mounted scale with an RS232 port and a text-based protocol |
| Display | 20×4 jumbo LCD - line 0 scan, line 3 weight, lines 1-2 user controlled |
| RGB indicator | 8 RGB LEDs, PASS/FAIL indication driven from the host API |
| Bidirectional BLE | Weight and scan characteristics accept writes as well as reads - software tare, frozen display, label print |
| Identification add-ons | USB/RS232 QR & barcode scanner, or built-in RFID reader (EPC and TID) |
| Enclosure | ABS plastic, black; optional IP68 enclosure available |
| Power supply | 7 to 24 V DC |
| BLE version | 4.2, one simultaneous connection |
| Options | Keypad and powder-coated aluminium stand |

## Used by

- [Warehouse Management](https://iotready.com/solutions/warehouse-management.md): Warehouse, store, yard and shop-floor inventory, run as nine workflows that read identity and quantity off the item itself and validate it before the document posts.
- [Farm gate to dark store at BigBasket](https://iotready.com/case-studies/bigbasket-farm-to-fork.md): Eleven workflows on one platform, from a farmer selling leafy vegetables at a collection centre to a crate coming back from a customer's door.
- [Factory operations at GoDesi](https://iotready.com/case-studies/godesi-factory-operations.md): Raw material to finished goods across several snack factories, with the cooking process itself monitored and every transaction landing in ERPNext as it happens.
- [Raw material to finished goods at Vedanta](https://iotready.com/case-studies/vedanta-smelter-inventory.md): RFID across copper and aluminium smelters, with fixed readers tracking the yard-to-plant moves nobody has time to scan and handhelds covering everything else.