For me, this was a 20 hour learning curve. I used this with the LILYGO T-Display-S3 LCD, which is an ESP32 device with a VDD of 3.3 volts. I didn't realize the display has a tiny I2C connector near the end (pins 43,44). Most ADS1115 examples do not allow or explain how to specify the I2C pins. I don't have the tiny I2C connector, so I needed to specify my own pins. I found the ADS1X15 library by Adafruit (on Arduino IDE) was the easiest and best library to use. I used 3.3K pullup resistors for both the SDA and SCL pins to pull them up to 3.3v. Doing this allows the I2C bus to run at a faster speed. Example code:
#include <Adafruit_ADS1X15.h>
Adafruit_ADS1115 ads; /* Use this for the 16-bit version */
// In Setup()
Wire.begin(I2C_SDA_Pin, I2C_SCL_Pin); // specify custom pins for I2C
ads.begin(ADS1115_I2C_Address,&Wire);
ads.setGain(GAIN_ONE); // 1x gain +/- 4.096V 1 bit = 0.125mV
ads.setDataRate(RATE_ADS1115_32SPS); // 32 samples per second, it takes 32 ms per sampling
// To read ADC values
int16_t adc0, adc1, adc2, adc3;
adc0 = ads.readADC_SingleEnded(0);
adc1 = ads.readADC_SingleEnded(1);
adc2 = ads.readADC_SingleEnded(2);
adc3 = ads.readADC_SingleEnded(3);
Note: the I2C address of this ADS1115 device is 0x48.
Be sure to connect something to all 4 pins (A0, A1, A2, A3). If any of these pins are unused, connect the unused pins to either VDD (best) or GND.
Check out Robert's Smorgasbord on Youtube for an explanation of ADS1115.
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This item: SHILLEHTEK, Pre-Soldered, ADS1115, 4 Channel, I2C, IIC, Analog-to-Digital, ADC, PGA, 16 Bit, 16 Byte Converter, Programmable Gain Amplifier, High Precision ADC Converter, Arduino, Raspberry Pi
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Product Description
Analog to Digital
High-precision ADC
The ADS1115 is a 16-bit ADC, which means it can convert an analog signal into a digital value with very high precision.
Low Power Consumption
The ADS1115 is designed to consume very little power, making it suitable for battery-powered applications where power efficiency is critical.
Multiple Input Channels
The ADS1115 can measure up to four analog input channels.
Universally Compatible
This sensor is easy to use with just about any microcontroller that has an I2C interface, such as all Raspberry Pi, Arduino, and ESP32 models
Pre-Soldered ADS1115
Powerful Capabilities
This product is ready to be plugged in. No soldering is needed. You do not have to worry about dealing with soldering if you do not have the equipment, want to save time, simply do not enjoy doing it, or do not want kids playing around with soldering irons which can be dangerous.
Additionally, our the ADS1115 boasts a precision 16-bit ADC with high accuracy, ensuring an enhancement of your analog measurements through its high-resolution capability, more accurate than many microcontrollers.
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It works with the Lilygo T-Display-S3 LCD
For me, this was a 20 hour learning curve. I used this with the LILYGO T-Display-S3 LCD, which is an ESP32 device with a VDD of 3.3 volts. I didn't realize the display has a tiny I2C connector near the end (pins 43,44). Most ADS1115 examples do not allow or explain how to specify the I2C pins. I don't have the tiny I2C connector, so I needed to specify my own pins. I found the ADS1X15 library by Adafruit (on Arduino IDE) was the easiest and best library to use. I used 3.3K pullup resistors for both the SDA and SCL pins to pull them up to 3.3v. Doing this allows the I2C bus to run at a faster speed. Example code: #include <Adafruit_ADS1X15.h> Adafruit_ADS1115 ads; /* Use this for the 16-bit version */ // In Setup() Wire.begin(I2C_SDA_Pin, I2C_SCL_Pin); // specify custom pins for I2C ads.begin(ADS1115_I2C_Address,&Wire); ads.setGain(GAIN_ONE); // 1x gain +/- 4.096V 1 bit = 0.125mV ads.setDataRate(RATE_ADS1115_32SPS); // 32 samples per second, it takes 32 ms per sampling // To read ADC values int16_t adc0, adc1, adc2, adc3; adc0 = ads.readADC_SingleEnded(0); adc1 = ads.readADC_SingleEnded(1); adc2 = ads.readADC_SingleEnded(2); adc3 = ads.readADC_SingleEnded(3); Note: the I2C address of this ADS1115 device is 0x48. Be sure to connect something to all 4 pins (A0, A1, A2, A3). If any of these pins are unused, connect the unused pins to either VDD (best) or GND. Check out Robert's Smorgasbord on Youtube for an explanation of ADS1115.
Top reviews from the United States
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- Reviewed in the United States on January 12, 2024
For me, this was a 20 hour learning curve. I used this with the LILYGO T-Display-S3 LCD, which is an ESP32 device with a VDD of 3.3 volts. I didn't realize the display has a tiny I2C connector near the end (pins 43,44). Most ADS1115 examples do not allow or explain how to specify the I2C pins. I don't have the tiny I2C connector, so I needed to specify my own pins. I found the ADS1X15 library by Adafruit (on Arduino IDE) was the easiest and best library to use. I used 3.3K pullup resistors for both the SDA and SCL pins to pull them up to 3.3v. Doing this allows the I2C bus to run at a faster speed. Example code:
It works with the Lilygo T-Display-S3 LCD
Reviewed in the United States on January 12, 2024
#include <Adafruit_ADS1X15.h>
Adafruit_ADS1115 ads; /* Use this for the 16-bit version */
// In Setup()
Wire.begin(I2C_SDA_Pin, I2C_SCL_Pin); // specify custom pins for I2C
ads.begin(ADS1115_I2C_Address,&Wire);
ads.setGain(GAIN_ONE); // 1x gain +/- 4.096V 1 bit = 0.125mV
ads.setDataRate(RATE_ADS1115_32SPS); // 32 samples per second, it takes 32 ms per sampling
// To read ADC values
int16_t adc0, adc1, adc2, adc3;
adc0 = ads.readADC_SingleEnded(0);
adc1 = ads.readADC_SingleEnded(1);
adc2 = ads.readADC_SingleEnded(2);
adc3 = ads.readADC_SingleEnded(3);
Note: the I2C address of this ADS1115 device is 0x48.
Be sure to connect something to all 4 pins (A0, A1, A2, A3). If any of these pins are unused, connect the unused pins to either VDD (best) or GND.
Check out Robert's Smorgasbord on Youtube for an explanation of ADS1115.
Images in this review
- Reviewed in the United States on June 5, 2023
The ADS1115 is an analog to digital converter (ADC) IC that has 16-bit resolution with 4 single-ended or 2-differential analog inputs and an onboard programmable amplifier (PGA). It may be used with microcontrollers like Arduino, Raspberry PI, ESP32, etc. The 16-bit resolution is much better than most microcontroller's built-in ADC's (if such are available), which often are 10-bit only.
If you are measuring small signals, such as from a Wheatstone bridge, the high resolution of this breakout board allows for enhanced accuracy.
I've shown photos of my basic test setup using an Arduino UNO microcontroller to control the ADS115 breakout board. I recommend the Arduino libraries from Adafruit for use with this board. They have free libraries for Arduino C++ and Circuit Python. The example code available from Adafruit is complete, free, and fully tested, as are the wiring diagrams for use with a variety of microcontrollers.
Images in this review
- Reviewed in the United States on June 6, 2023
I got this for my Arduino projects. It's a basic Texas Instruments ADS1115 analog-to-digital converter chip with I2C and ability to change the I2C address depending on whether the ADDR pin is connected to VDC or GND. Instructions for changing the address can be found on the ADS1115 data sheet. Example code is is widely available with an internet search.The board works as described, the soldering is neat and clean and it's a good but not great price.
Just a ADS1115 breakout board with pre-soldered pin header
Reviewed in the United States on June 6, 2023
Images in this review
- Reviewed in the United States on May 23, 2023
- Reviewed in the United States on April 11, 2023
Looks great and works as expected
Images in this review
