easy-scale-serial

Easy Scale Plugin for CapacitorJS

Install

npm install easy-scale-serial
npx cap sync

Quick intro

This plugin was developed for Android App with CapacitorJS. The plugin's main feature is connecting Android devices with digital scales, such as TORREY; this plugin allows request weight from a digital scale.

📋️ Requirements

• capacitor/android 7.x.x
• capacitor/core 7.x.x
• Open android/build.gradle file and add repositories before building the app.

allprojects {
    repositories {
        google()
        mavenCentral()
        maven { url 'https://jitpack.io' } // required for usb-serial-for-android
    }
}

• Open android/app/build.gradle file and add the dependency before building the app.

dependencies {
    implementation 'com.github.mik3y:usb-serial-for-android:3.9.0'
}

• Open android/app/src/main/AndroidManifest.xml file and add feature before building the app.

<uses-feature android:name="android.hardware.usb.host" android:required="false" />

💻️ Quick example

The best way to add the plugin to CapacitorJS app (ex: Angular) is creating a service, the following example is a suggestion of application and logic.

import { Injectable, NgZone } from '@angular/core';
import { ScaleSerial } from 'easy-scale-serial';

@Injectable({
  providedIn: 'root'
})
export class ScaleService {

    constructor(private zone: NgZone){}

    // Just call the func.
    scanWeight(){
        this.zone.run(async () => {
            try {
                // In this example Torrey Scale request command is: P
                const res = await ScaleSerial.requestWeight({ command: 'P'});
                console.log('Weight: ', res.weight);
            } catch (err) {
                console.error('Error', err);
            }
        });
    }
}

API

• requestWeight(...)

requestWeight(...)

requestWeight(options: { command: string; }) => Promise<{ weight: string; }>

| Param | Type | | ------------- | --------------------------------- | | options | { command: string; } |

Returns: Promise<{ weight: string; }>

Contact, Reports or Bugs

Thanks for checking out the project. You can take a peek about my work by visiting my website.

🌍 Website: Visit