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Grow GM78 Barcode Scanner Module - 4mil CMOS Sensor, USB/UART Interface

₹3,649.00 (Inclusive of all taxes)
Out of Stock

The Grow GM78 is a compact, high-resolution CMOS barcode scanner module designed for embedded integration. It reads 1D and 2D codes down to 4mil resolution via USB 2.0 or UART serial interface, operating from a standard 5V DC supply for compatibility with POS systems, industrial automation, and custom electronics projects.

Features

  • High-resolution 640×480 CMOS sensor reads 1D/2D barcodes down to 4mil.
  • Dual interface support: USB 2.0 (HID/CDC) and UART TTL serial for flexible system integration.
  • Compact embedded module measuring 48(W) x 27.5(D) x 14(H) mm.
  • Wide symbology support including EAN, UPC, Code 128, QR Code, Data Matrix, and PDF417.
  • Low-power operation at 5V DC with a typical current draw of 180mA.

Out of stock

Description

The Grow GM78 Barcode Scanner utilizes a high-performance 640×480 pixel CMOS image sensor for precise optical capture of 1D linear and 2D Matrix barcodes. Its imaging engine achieves a minimum element width (MEW) resolution of 4mil, enabling reliable reading of high-density and damaged codes. The module outputs decoded data via a selectable USB 2.0 (emulating HID keyboard or virtual COM port) or UART TTL serial interface, providing plug-and-play compatibility with PCs, microcontrollers (Arduino, Raspberry Pi, ESP32), and industrial PLCs.

Engineered for embedded applications, the GM78 features a compact, board-level form factor ideal for integration into kiosks, vending machines, inventory tracking systems, and portable data terminals. Its robust decoding algorithm supports an extensive library of symbologies, ensuring versatility across retail, logistics, and manufacturing environments. The scanner operates within a typical reading distance range of 25mm to 200mm, balancing field of view with depth of field for consistent performance.

Key Features

  • High-resolution CMOS imaging sensor for accurate 1D and 2D barcode reading.
  • Dual-interface flexibility with USB 2.0 (HID/CDC) and UART TTL serial communication.
  • Compact and lightweight embedded module design for space-constrained installations.
  • Extensive symbology support covering major retail, industrial, and postal standards.
  • Optimized optical system for a reading distance range of 25mm to 200mm.
  • Low-power consumption design, operating from a single 5V DC power source.
  • Durable construction suitable for integration into commercial and industrial equipment.

Applications

  • Embedded integration into Point-of-Sale (POS) systems and self-service kiosks.
  • Inventory management and asset tracking in warehouse and logistics automation.
  • Product identification and sorting in manufacturing and assembly line control.
  • Portable data collection devices and handheld terminal builds.
  • Library management systems and document tracking applications.

Technical Specifications

Sensor Type640 x 480 Pixel CMOS
Barcode Types1D & 2D
Minimum Element Width (Resolution)4mil
Supported InterfacesUSB 2.0, UART TTL
Operating Voltage5 V DC
Typical Operating Current180 mA
Reading Distance Range25 - 200 mm
Dimensions (W x D x H)48 x 27.5 x 14 mm
DPM (Direct Part Marking) SupportNo
Primary ApplicationsEmbedded Systems, POS, Industrial Automation

Frequently Asked Questions

What interfaces does the GM78 barcode scanner support and how do I select them?

The GM78 module supports both USB 2.0 and UART TTL serial interfaces. The interface is typically selected via a configuration command sent over the UART or through a dedicated mode-setting pin, depending on the firmware version. For USB operation, it can emulate a HID keyboard or a virtual COM port (CDC). For UART, it communicates using standard TTL logic levels (0V/5V).

What is the power requirement for the GM78 scanner module?

The module requires a stable 5V DC power supply and draws a typical operating current of 180mA. It is designed to be powered directly from a USB host port or from a regulated 5V source on your main board. Ensure your power supply can provide adequate current, especially during the illumination and imaging burst.

Can this scanner read barcodes printed on curved surfaces or directly marked parts (DPM)?

The GM78 is optimized for reading barcodes printed on labels or paper substrates. Its specification sheet indicates no dedicated support for Direct Part Marking (DPM). For reading codes etched, laser-marked, or dot-peened onto metal, plastic, or glass surfaces, a scanner specifically designed with DPM algorithms and different lighting would be required.

How do I connect the GM78 to an Arduino or Raspberry Pi?

For Arduino or Raspberry Pi (using GPIO), use the UART TTL interface. Connect the module's TX pin to your microcontroller's RX pin, RX to TX, GND to GND, and provide 5V to the VCC pin. You will need to send serial commands to trigger scans and receive the decoded data string. For Raspberry Pi, note that its GPIO uses 3.3V logic; a level shifter may be necessary if the module's UART pins are not 3.3V tolerant.

Package Includes

  • 1 x GM78 Barcode Scanner Module
  • 1 x 15cm 6-Pin Serial Cable (UART)

Additional Information

Weight 0.2 kg
Dimensions 2.75 × 4.8 × 1.4 cm