https://github.com/foo-git/gm60_micropython

Driver for GM60 barcode scanner with MicroPython and ESP32
https://github.com/foo-git/gm60_micropython

barcode-scanner esp32 gm60 grocy micropython micropython-esp32

Last synced: 3 months ago
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Driver for GM60 barcode scanner with MicroPython and ESP32

• Host: GitHub
• URL: https://github.com/foo-git/gm60_micropython
• Owner: foo-git
• Created: 2024-06-28T17:26:00.000Z (6 months ago)
• Default Branch: main
• Last Pushed: 2024-07-20T07:53:14.000Z (5 months ago)
• Last Synced: 2024-10-01T05:03:20.142Z (3 months ago)
• Topics: barcode-scanner, esp32, gm60, grocy, micropython, micropython-esp32
• Language: Python
• Homepage:
• Size: 1.83 MB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# GM60 barcode scanner driver for MicroPython and ESP32

## Background

To make the GM60 barcode scanner work with an ESP32 using MicroPython, a driver is needed to handle the input/output to the scanner. The `driver` folder contains this driver, further development resources are located in the `docs` folder.

This driver is used in another project for inventory handling using [Grocy](https://grocy.info/), a great software project.

## Features

* Comfortable I/O commands make working with the datasheet easier

* CRC support for incoming and outgoing packets

## Example usage

See `example.py` for runnable commands.

```

# Load driver

>>> from gm60_micropython import GM60_Driver

# Initialize UART connection to GM60 barcode scanner

    # UART port/naming hint:

    # GM60 RX (green cable) needs to be connected to ESP32 TX (e.g. here pin 25)

    # GM60 TX (yellow cable) needs to be connected to ESP32 RX (e.g. here pin 26)

>>> scanner = GM60_Driver(rx=26, tx=25)

# Prints hardware and software version information

>>> scanner.get_version()

{'hardware': 1.0, 'software_date': '2021-09-16', 'software': 1.08}

# Resets scanner back to factory settings

>>> scanner.reset_to_factory_defaults()

# Prints register settings in hexadecimal and binary format for easier development

>>> scanner.get_register_settings(0x0000)

(['0x8e'], ['0b10001110'])

# Set LED always on

>>> scanner.set_register_settings(0x0000, 0b10001110)

# Set LED to maximum brightness

>>> scanner.set_register_settings(0x0015, 0x63)

# Read barcode from sensor

>>> scanner.read_barcode()

'4066447241358'

```

![Circuit diagram for GM60 and ESP32](https://github.com/foo-git/gm60_micropython/blob/main/docs/circuit.png?raw=true)

![Photo of GM60 and ESP32 proof-of-concept build](https://github.com/foo-git/gm60_micropython/blob/main/docs/poc.jpg?raw=true)

## References

See `docs/references.md` for other projects using the GM60 barcode scanner. Linked there also is the GM60 datasheet for future reference.