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ESP32 Grocy Barcode Scanner

Simple ESP32 Barcode Scanner for Grocy with GM60 scanner

if you want to learn how to communicate with Grocy use V1.0.

V2.0 is much more complex and includes an MQTT interface.

MQTT Interface

(optimized for Homeassistant with auto discovery)

MQTT-controlls

Setup

  1. create a Grocy API-KEY
  2. Edit the Setup
  3. Wire everytihing
  4. Upload the .ino file with the Arduino IDE

Settings

V1.0

settings

V2.0

settings_v2

Hardware

ESP32 Wroom https://www.amazon.de/gp/product/B08BTS62L7

GM60 Barcodescanner https://www.amazon.de/dp/B0BZC5WNF7

buzzer https://www.amazon.de/dp/B0C58DR1QV

used Library´s

DFRobot_GM60.h https://github.com/DFRobot/DFRobot_GM60

WiFi.h

HTTPClient.h

ArduinoJson.h https://arduinojson.org/?utm_source=meta&utm_medium=library.properties

SoftwareSerial.h https://github.com/plerup/espsoftwareserial/

ArduinoMqttClient.h https://github.com/arduino-libraries/ArduinoMqttClient (only in v2.0)

circuit diagram

circuit diagram

functions (V1.0)

  • load barcode and product data form your Grocy server
  • add Product to stock
  • consume product from stock

functions