Description
A compact and reliable weigh scale system designed for Tamil Nadu ration shops and other retail applications. It features Bluetooth and TTL serial communication, a clear 6-digit display, high-precision ADC, and runs on a rechargeable Li-ion battery with 5V charging support.
Key Features
- ESP32 with Bluetooth and TTL UART output
- 24-bit ADC for accurate weight measurements
- Operates on 3.7V Li-ion battery
- 5V charging input DC/Solar
- Compact design for easy integration
Specifications
- Microcontroller: ESP32 (dual-core, Bluetooth enabled)
- Communication: Bluetooth (SPP or BLE), TTL UART (3.3V logic)
- ADC: 24-bit high-precision for load cell interface
- Display: 6-digit 7-segment LED using TM1637 driver
- Power: 3.7V single-cell Li-ion battery
- Charging: 5V input DC/Solar
- Current Consumption: Less than 100 mA during operation
- Dimensions: 56 mm x 52 mm (approximate)
Applications
- Ration shop weigh scale system
- Embedded digital weighing platforms
- POS-connected retail scales
- Battery-powered or portable weighing systems
