bt-sensors-plugin-sk/sensor_classes/LancolVoltageMeter.js

Bluetooth Sensors for Signalk -- support for Victron devices, RuuviTag, Xiaomi, ATC and Inkbird, Ultrasonic wind meters, Mopeka tank readers, Renogy Battery and Solar Controllers, Aranet4 environment sensors, SwitchBot temp and humidity sensors, Kilovault

const BTSensor = require("../BTSensor");

class LancolVoltageMeter extends BTSensor{

    static async  identify(device){

        const name = await this.getDeviceProp(device,"Name")
        const regex = /^Lancol *[0-9]{1,3}\.[0-9]{1,2}V/
 
        if (name && name.match(regex))  
            return this
        else
            return null
        
    }

    async init(){
        await super.init()
        this.addMetadatum('voltage','V', 'battery voltage')
    }

    getManufacturer(){
        return "Lancol"
    }
    async propertiesChanged(props){
        super.propertiesChanged(props)    
        
        if (props.Name) {
            const regex = /[+-]?([0-9]*[.])?[0-9]+/
            const r = this.valueIfVariant(props.Name).match(regex)
            if (r) {
                this.emit("voltage",parseFloat([...r][0]))
            } else {
                this.debug(`Unable to parse Name property for ${this.getName()}: ${props.Name}`)
            }
        }
   }                         
}
module.exports=LancolVoltageMeter