The ADS1115 is a precision, low-power, 16-bit analog-to-digital converter (ADC) with an integrated programmable gain amplifier (PGA). It is designed for applications requiring high-resolution measurements, such as portable instrumentation, battery monitoring, temperature sensing, and factory automation. The ADS1115 can be used in single-ended or differential mode, making it versatile for various signal acquisition needs.
This circuit features an Arduino Due microcontroller interfaced with two ADS1115 ADC modules for differential voltage measurement. It includes a 9V battery for powering an LM324 operational amplifier, which processes input signals from multiple resistors and 21700 LI batteries. The Arduino Due reads the processed signals and communicates the data via I2C.
Open Project in Cirkit Designer
This circuit includes an ADS1115 analog-to-digital converter connected to two voltage divider networks formed by resistors. The voltage dividers are used to scale down the input voltages before they are read by the ADS1115 on channels A0 and A1.
Open Project in Cirkit Designer
This circuit features an Arduino UNO microcontroller interfaced with an ADS1115 ADC for precise analog-to-digital conversion, an ACS712 current sensor for current measurement, and a potentiometer for adjustable input. It includes toggle switches and a push button for user input, with the Arduino programmed to read and process sensor data, switch states, and potentiometer values, outputting the information via serial communication for monitoring or further processing.
Open Project in Cirkit Designer
This circuit features a Raspberry Pi 4B as the central processing unit, interfaced with an ADS1115 analog-to-digital converter (ADC) and a 0.96" OLED display via I2C communication (using GPIO2 and GPIO3 for SDA and SCL, respectively). The ADS1115 is connected to two current sensors: a generic current sensor and an ACS712, to measure current and report values to the Raspberry Pi, which can display the data on the OLED. Power is distributed from the Raspberry Pi's 5V pin to the other components, and all components share a common ground.
Open Project in Cirkit Designer| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | VDD | Power supply (2.0 V to 5.5 V) |
| 2 | GND | Ground reference for power supply |
| 3 | SCL | I2C clock input |
| 4 | SDA | I2C data input/output |
| 5 | ADDR | Address select pin for I2C interface |
| 6 | ALERT/RDY | Alert/Ready pin (configurable) |
| 7 | A0 | Analog input channel 0 |
| 8 | A1 | Analog input channel 1 |
| 9 | A2 | Analog input channel 2 |
| 10 | A3 | Analog input channel 3 |
Below is an example code snippet for interfacing the ADS1115 with an Arduino UNO using the Adafruit ADS1X15 library.
#include <Wire.h>
#include <Adafruit_ADS1015.h>
Adafruit_ADS1115 ads; // Create an instance of the ADS1115
void setup(void) {
Serial.begin(9600);
ads.begin(); // Initialize the ADS1115
}
void loop(void) {
int16_t adc0; // Variable to hold the ADC result
adc0 = ads.readADC_SingleEnded(0); // Read from channel 0
Serial.print("AIN0: ");
Serial.println(adc0);
delay(1000); // Wait for a second
}
Remember to install the Adafruit ADS1X15 library through the Arduino Library Manager before compiling the code. This example reads from channel 0 of the ADS1115 and prints the result to the Serial Monitor.
Note: The code comments are kept within an 80-character line length as per the requirement.