Atlas Scientific I2C - EZO Device Wrappers

This is collection of wrapper classes which handle working with EZO Devices over I2C in NodeJS.

Supported Devices

• pH
• Peristaltic Pump
• ORP
• EC
• DO

Any device that responds properly to the info command, but it not in the supported list, will be instantiated as a generic EZO device

These were the only devices I had on hand to test with.

Pull Requests to support other devices are welcome!

Install

This requires the PromisifiedBus class from i2c-bus

1. npm install i2c-bus
2. npm install atlas-scientific-i2c

Getting Started

const as_dev=require('atlas-scientific-i2c');
const i2c = require('i2c-bus');

async function Test(){
        //open the i2c bus
        const bus = await i2c.openPromisified(1);
        //find all EZO devices
        const devs=await as_dev.FindAllDevices(bus);
        //print out all detected devices
        console.log(devs);
        //Loop through the list, using 'instanceof' to find the pH chip, and pull a reading from it.
        devs.forEach(async item=>{
                if(item instanceof as_dev.pH){
                        const r = await item.GetReading();
                        console.log('pH reading:'+r);
                }else{
                        //for everything else, print out the device's class
                        console.log(item.constructor.name);
                }
        });
}

Test();

API

JSDoc