Project Documentation

Arduino UNO and ADS1115-Based Current Monitoring System with Toggle and Push Switches

Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO, an ADS1115 ADC, an ACS712 current sensor, a potentiometer, toggle switches, a push button, and a power supply. The circuit is designed to read current values, potentiometer settings, and switch states, and then send this data to a serial monitor for further processing.

Component List

ADS1115
- Description: 16-bit Analog-to-Digital Converter (ADC)
- Pins: VDD, GND, SCL, SDA, ADDR, ALRT, A0, A1, A2, A3
Toggle Switch
- Description: Simple on/off switch
- Pins: Vcc, Sig, Gnd
Arduino UNO
- Description: Microcontroller board based on the ATmega328P
- Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0
ACS712 Current Sensor 5A 20A 30A
- Description: Current sensor module
- Pins: 1, 2, GND, OUT, VCC
Potentiometer
- Description: Variable resistor
- Pins: GND, Output, VCC
2Pin Push Switch
- Description: Simple push button switch
- Pins: Input +, Output +
POWER SUPPLY 5V 5AMP
- Description: Power supply unit
- Pins: 220V Positive Pole (AC), 220V Negative Pole (AC), GND, GND (DC), 12V-24V Output (DC)

Wiring Details

ADS1115

VDD connected to 5V of Arduino UNO
GND connected to:
- GND of Arduino UNO
- Input + of 2Pin Push Switch
- GND of ACS712 Current Sensor
- Sig of Toggle Switch 1
- Sig of Toggle Switch 2
- GND of Potentiometer
SCL connected to A5 of Arduino UNO
SDA connected to A4 of Arduino UNO
A0 connected to OUT of ACS712 Current Sensor
A1 connected to Output of Potentiometer

Toggle Switch 1

Vcc connected to D6 of Arduino UNO
Sig connected to GND of Arduino UNO
Gnd connected to D5 of Arduino UNO

Toggle Switch 2

Vcc connected to D4 of Arduino UNO
Sig connected to GND of Arduino UNO
Gnd connected to D3 of Arduino UNO

Arduino UNO

5V connected to VDD of ADS1115
GND connected to:
- GND of ADS1115
- Input + of 2Pin Push Switch
- GND of ACS712 Current Sensor
- Sig of Toggle Switch 1
- Sig of Toggle Switch 2
- GND of Potentiometer
A5 connected to SCL of ADS1115
A4 connected to SDA of ADS1115
A1 connected to Output of Potentiometer
D7 connected to Output + of 2Pin Push Switch
D6 connected to Vcc of Toggle Switch 1
D5 connected to Gnd of Toggle Switch 1
D4 connected to Vcc of Toggle Switch 2
D3 connected to Gnd of Toggle Switch 2

ACS712 Current Sensor

1 connected to 220V Negative Pole (AC) of POWER SUPPLY 5V 5AMP
2 connected to 220V Positive Pole (AC) of POWER SUPPLY 5V 5AMP
GND connected to GND of Arduino UNO
OUT connected to A0 of ADS1115
VCC connected to 5V of Arduino UNO

Potentiometer

GND connected to GND of Arduino UNO
Output connected to A1 of ADS1115
VCC connected to 5V of Arduino UNO

2Pin Push Switch

Input + connected to GND of Arduino UNO
Output + connected to D7 of Arduino UNO

POWER SUPPLY 5V 5AMP

220V Positive Pole (AC) connected to 2 of ACS712 Current Sensor
220V Negative Pole (AC) connected to 1 of ACS712 Current Sensor

Code Documentation

#include <Adafruit_ADS1X15.h>
#include <Wire.h>

Adafruit_ADS1115 ads;  // Create an instance of the ADS1115

// Pin Definitions
const int potPin = A1;           // Pin for potentiometer
const int toggleSwitch1Pin = 3;  // Pin for toggle switch 1 (corrected)
const int toggleSwitch2Pin = 4;  // Pin for toggle switch 2 (corrected)
const int pushSwitchPin = 7;     // Pin for push button (corrected)

// Variables to store values
int toggleSwitch1State = 0;      // Variable for toggle switch 1 state
int toggleSwitch2State = 0;      // Variable for toggle switch 2 state
int pushSwitchState = 0;         // Variable for push button state
float currentSetting = 0;        // Variable for potentiometer value

void setup() {
  // put your setup code here, to run once:

  Serial.begin(9600);  // Start Serial communication for debugging
  
  ads.begin();  // Initialize the ADS1115 ADC

  // Configure pins for switches
  pinMode(toggleSwitch1Pin, INPUT);    // Set toggle switch 1 pin as input
  pinMode(toggleSwitch2Pin, INPUT);    // Set toggle switch 2 pin as input
  pinMode(pushSwitchPin, INPUT_PULLUP); // Set push button pin as input with internal pull-up
}

void loop() {
  // put your main code here, to run repeatedly:

  // Read the current from ACS712 via ADS1115
  int16_t rawADC = ads.readADC_SingleEnded(0);  // Read from A0 of ADS1115
  float voltage = rawADC * (4.096 / 32767.0);   // Convert raw ADC value to voltage
  float current = (voltage - 2.5) / 0.185;      // Convert voltage to current based on ACS712 (adjust based on your model)

  // Read the potentiometer value
  currentSetting = analogRead(potPin);          // Read potentiometer value from A1
  float knobValue = map(currentSetting, 0, 1023, 0, 100);  // Map to 0-100 range (adjust as needed)

  // Read the toggle switch states
  toggleSwitch1State = digitalRead(toggleSwitch1Pin);  // Read toggle switch 1 state
  toggleSwitch2State = digitalRead(toggleSwitch2Pin);  // Read toggle switch 2 state

  // Read the push button state
  pushSwitchState = digitalRead(pushSwitchPin); // Read push button state (LOW when pressed)

  // Send data to Serial for your custom software
  Serial.print("Current: ");
  Serial.print(current, 3);                     // Print current in Amps
  Serial.print(" A, Knob Value: ");
  Serial.print(knobValue);                      // Print potentiometer value as a percentage
  Serial.print(" %, Toggle Switch 1: ");
  Serial.print(toggleSwitch1State == HIGH ? "OFF" : "ON");  // Print toggle switch 1 state
  Serial.print(", Toggle Switch 2: ");
  Serial.print(toggleSwitch2State == HIGH ? "OFF" : "ON");  // Print toggle switch 2 state
  Serial.print(", Push Button: ");
  Serial.println(pushSwitchState == HIGH ? "Released" : "Pressed");  // Print push button state

  // Add a small delay to avoid spamming Serial
  delay(500);  // Adjust the delay as needed
}

This code initializes the ADS1115 ADC, reads current values from the ACS712 current sensor, potentiometer values, and switch states, and then sends this data to the serial monitor for further processing.