@iiot2k/ads1115

ads1115 analog to digital converter library

Installation

npm install @iiot2k/ads1115

or add in your package.json:

"dependencies": {
    "@iiot2k/ads1115": "latest"
},

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ads1115 16bit analog to digital converter

• 16bit Conversion Resolution.
• Four Analog Inputs.
• Each input can be selected Single-Ended, Differential.
• Internal Voltage Reference.
• Internal Oscillator.
• Programmable Data Rate 8 SPS to 860 SPS.
• The PGA offers input ranges from ±256 mV to ±6144 mV.
• I2C Interface with four pin-selectable addresses.

Usage

• This library works on Raspberry Pi with 32bit or 64bit OS.
• The output value is mV or adc raw data.
• Enable I2C with raspi-config.
• In this case i2c-1 is enabled (port=1).
• If you use i2c-0 port add
  dtparam=i2c_vc=on
  to /boot/config.txt,
  then Pin27=SDA, Pin28=SCK.
  
• For other ports add this to /boot/config.txt.

API

API functions are explained in documents API.md

C++ libraries and examples

Report any issues here

Address Pin Connection

I2C Address	ADDR Pin
48H	GND or open
49H	VCC
4AH	SDA
4BH	SCL

Example

Examples are on examples folder.

// example reads single adc input
"use strict";

const ads1115 = require("@iiot2k/ads1115");

ads1115.read(
    1, // i2c-1
    ads1115.ADR_48, // address 0x48
    ads1115.MUX_I0_GND, // AIN0 - GND
    ads1115.GAIN_4096, // 4096 mV
    ads1115.RATE_128, // 128 SPS
    false, // no rawdata
    function(data) {
        if (data === undefined)
            console.log(ads1115.error_text());
        else
            console.log(data, "mV");
    });