Circuit Documentation

Summary of the Circuit

This circuit is designed to read analog values from a potentiometer and convert them to digital using the Adafruit ADS1015 12Bit I2C ADC (Analog-to-Digital Converter). The ADC communicates with an Arduino UNO microcontroller over I2C. The potentiometer's output is connected to the ADC's input channel through a resistor. The circuit is powered by a 9V battery. The Arduino UNO reads the digital values from the ADC and outputs the readings to the serial monitor.

Component List

Adafruit ADS1015 12Bit I2C ADC

• Description: A precision, 12-bit, I2C-compatible analog-to-digital converter.
• Pins: VDD, GND, SCL, SDA, ADDR, ALERT, AIN0, AIN1, AIN2, AIN3

Arduino UNO

• Description: A 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

Potentiometer

• Description: A three-terminal resistor with a continuously adjustable tapping point controlled by rotation of a shaft or knob.
• Pins: GND, Output, VCC

9V Battery

• Description: A standard 9V battery used to provide power to the circuit.
• Pins: -, +

Resistor

• Description: A passive two-terminal electrical component that implements electrical resistance as a circuit element.
• Pins: pin1, pin2
• Properties: Resistance - 200 Ohms

Wiring Details

Adafruit ADS1015 12Bit I2C ADC

• VDD: Connected to 9V Battery (+)
• GND: Connected to 9V Battery (-)
• SCL: Connected to Arduino UNO SCL
• SDA: Connected to Arduino UNO SDA
• AIN0: Connected to Resistor (pin2)

Arduino UNO

• SCL: Connected to ADS1015 SCL
• SDA: Connected to ADS1015 SDA

Potentiometer

• VCC: Connected to 9V Battery (+)
• GND: Connected to 9V Battery (-)
• Output: Connected to Resistor (pin1)

9V Battery

• +: Connected to Potentiometer VCC and ADS1015 VDD
• -: Connected to Potentiometer GND and ADS1015 GND

Resistor

• pin1: Connected to Potentiometer Output
• pin2: Connected to ADS1015 AIN0

Documented Code

#include <Adafruit_ADS1X15.h>
/*
 * Arduino Sketch for a simple analog to digital converter test using a
 * potentiometer. The circuit uses an Adafruit ADS1015 12Bit I2C ADC to read
 * the analog values from the potentiometer and displays the values on the
 * serial monitor.
 *
 * Circuit Connections:
 * - ADS1015 VDD to 9V Battery +
 * - ADS1015 GND to 9V Battery -
 * - ADS1015 SCL to Arduino UNO SCL
 * - ADS1015 SDA to Arduino UNO SDA
 * - Potentiometer VCC to 9V Battery +
 * - Potentiometer GND to 9V Battery -
 * - Potentiometer Output to Resistor pin1
 * - Resistor pin2 to ADS1015 AIN0
 */

#include <Wire.h>

Adafruit_ADS1015 ads;  // Create an instance of the ADS1015

void setup() {
  Serial.begin(9600);  // Initialize serial communication
  ads.begin();         // Initialize the ADS1015
}

void loop() {
  int16_t adc0;
  adc0 = ads.readADC_SingleEnded(0);  // Read the analog value from AIN0
  Serial.print("AIN0: ");
  Serial.println(adc0);
  delay(1000);  // Wait for 1 second before the next reading
}

This code initializes the Adafruit ADS1015 and reads the analog value from the AIN0 channel, which is connected to the potentiometer through a resistor. The read value is then printed to the serial monitor every second.