ADS1115 2Pcs Pack
5.0Editor score
Affordable pack
Programmable gain
Wide voltage range
In this guide
Finding the right ADC board for your Arduino projects can be challenging given the variety of options available. You need precise conversion, reliable interfaces, and compatibility with your specific microcontroller setup.
We have evaluated ten leading products based on resolution, channel count, communication protocols, and user feedback. Our analysis focuses on performance accuracy and ease of integration into existing electronics workflows.
Each selection highlights key features and practical applications to guide your decision. Prices may vary over time so check current listings before purchasing to ensure you get the best value for your project.
Top 3 Picks for Best Arduino ADC Board
Teyleten Robot ADS1115
4.7Editor score
16-bit resolution
4-channel input
I2C interface
HiLetgo ADS1256
4.6Editor score
24-bit resolution
8-channel inputs
High precision chip
Top 10 Best Arduino ADC Board in 2026 Compared
The following table provides a side-by-side overview of the top ten Arduino ADC Board options available this year. Compare their core specifications to find the best match for your application needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Teyleten Robot ADS1115
16-bit resolution
4 input channels
I2C protocol
2.0 to 5.5V
4.7Editor score
Editor's Choice
HiLetgo ADS1256
24-bit resolution
8 input channels
SPI protocol
High precision TI
4.6Editor score
Best Budget
ADS1115 2Pcs Pack
16-bit resolution
4 input channels
I2C protocol
Programmable gain
5.0Editor score
HiLetgo 3pcs ADS1115
16-bit resolution
4 input channels
I2C protocol
Comparator mode
4.3Editor score
4Pcs ADS1115
16-bit resolution
4 input channels
I2C protocol
Differential inputs
4.1Editor score
2PCS ADS1115 Module
16-bit resolution
4 input channels
I2C protocol
Wide voltage supply
5.0Editor score
Lonely Binary 3-Pack
16-bit resolution
ENIG finish
I2C protocol
Chain up to 4
4.4Editor score
Teyleten AD7606
16-bit resolution
8 input channels
200kHz sampling
SPI protocol
3.0Editor score
4PCS ADS1115 Modules
16-bit resolution
4 input channels
I2C protocol
Compatible with IoT
4.6Editor score
HiLetgo ADS1115
16-bit resolution
4 input channels
I2C protocol
Auto shut down
4.3Editor score
1. Teyleten Robot ADS1115 – Best Overall for Precision Sensing
Teyleten Robot ADS1115
16-bit resolution
Four differential inputs
I2C interface
Programmable gain
This ADC board stands out for its balance of precision and ease of use. With a 16-bit resolution and a strong user rating, it is ideal for projects requiring accurate analog measurements without complex wiring.
Pros
- High resolution accuracy
- Easy I2C wiring
- Multiple voltage options
- Compact design
- Great for Raspberry Pi
Cons
- Limited sampling rate
- Requires external library
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The onboard programmable gain amplifier allows you to measure small voltage changes effectively. Its I2C interface means you only need two data pins, which keeps your microcontroller setup clean and organized.
While it offers great accuracy, the sampling rate is lower than specialized high-speed modules. This makes it less suitable for capturing rapid signal changes but perfectly fine for sensor data logging.
If you need reliable analog-to-digital conversion for environmental monitoring or hobby electronics, this module delivers consistent performance. It is a solid choice for both beginners and experienced developers.
Precision Programmable Gain
The internal PGA allows selection of input ranges to match your sensor output. This flexibility ensures you capture detailed data even from low voltage sources.
Simple I2C Communication
Connecting via I2C reduces pin usage on your board. You can chain multiple modules to expand your input channels without using many GPIO pins.
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2. HiLetgo ADS1256 – High Resolution Multi-Channel Option
HiLetgo ADS1256
24-bit resolution
Eight input channels
SPI interface
High precision TI chip
This module is designed for users who need the highest possible resolution in an affordable package. With 24-bit conversion, it captures minute voltage differences that standard 10-bit or 12-bit ADCs would miss.
Pros
- Extremely high resolution
- Eight input channels
- Low nonlinearity
- Reference voltage included
- Great for data logging
Cons
- Requires SPI wiring
- Slightly higher cost
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It features eight analog input channels that can be configured as single-ended or differential. This versatility makes it excellent for monitoring multiple sensors or complex measurement setups simultaneously.
The inclusion of a reference voltage source ensures stable readings over time. However, the SPI interface requires more pins than I2C, which might limit options on boards with fewer available pins.
If you are building a precision instrument or data acquisition system, this board offers professional-grade performance. It is a top contender for projects where accuracy outweighs speed.
24-Bit Accuracy
The 24-bit resolution provides incredible detail in your measurements. This is crucial for applications like strain gauges or sensitive thermocouples.
Differential Input Support
Support for differential inputs helps reject noise from long wires. This ensures your data remains clean even in electrically noisy environments.
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3. ADS1115 2Pcs Pack – Best Budget Multi-Pack Solution
ADS1115 2Pcs Pack
16-bit resolution
Four input channels
I2C interface
Programmable data rate
Buying in bulk is often cost-effective for project builders. This two-pack offers reliable 16-bit performance at a very accessible price point. Users report high satisfaction with its performance and ease of setup.
Pros
- Affordable two-pack
- Perfect 16-bit accuracy
- Easy to integrate
- Wide voltage supply
- Excellent customer rating
Cons
- Pack of two only
- Standard ADS1115 limits
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It uses the standard ADS1115 chip which has widespread library support across Arduino and other platforms. You can easily find examples and code to get started immediately without extensive research.
The main limitation is that it is the standard ADS1115 which has speed limits compared to newer or higher bit chips. For most hobby and classroom projects, this is not a significant drawback.
If you need multiple boards for a class or several prototypes, this pack saves money. It is a smart buy for anyone wanting value without sacrificing essential precision features.
Bulk Value
Getting two boards at a low price means you have a spare if one fails. This is ideal for labs or group projects.
Standard Compatibility
Using the common ADS1115 ensures compatibility with most tutorials and code libraries. You avoid compatibility headaches with obscure modules.
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4. HiLetgo 3pcs ADS1115 – Best Three-Pack Value
HiLetgo 3pcs ADS1115
16-bit resolution
Four input channels
I2C interface
Comparator mode
This three-pack provides excellent coverage for multiple projects. It features the reliable ADS1115 chip which ensures your analog signals are converted accurately into digital data for processing.
Pros
- Three modules included
- Simple I2C connection
- Comparator for accuracy
- Stable voltage range
- Good for Raspberry Pi
Cons
- Moderate rating average
- No specialized features
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The ability to operate in comparator mode helps maintain accuracy when specific threshold values are needed. This can be useful for triggering alarms or simple automated responses based on sensor input.
While it does not have the highest speed, it is very stable across a wide voltage range. This makes it robust for powering from various sources without needing additional regulation.
If you need several boards for a distributed sensor network or classroom set, this pack offers good value. It is a practical choice for general purpose analog sensing tasks.
Comparator Function
Operating as a comparator allows the chip to alert when a value crosses a limit. This simplifies code when you only need to detect threshold breaches.
Voltage Stability
The wide supply range ensures the module works with different power setups. You do not need extra components to power it from a 3.3V or 5V system.
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5. 4Pcs ADS1115 – Best Bulk Set for Large Projects
4Pcs ADS1115
16-bit resolution
Four differential inputs
I2C interface
Internal oscillator
This four-piece set is perfect for scaling up your sensor network without buying individually. Each module provides high precision 16-bit conversion suitable for a wide variety of sensing tasks.
Pros
- Four boards in pack
- Differential signal support
- Stable internal oscillator
- Auto power save mode
- Flexible input ranges
Cons
- Average user rating
- Basic feature set
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Differential inputs allow you to measure signals relative to a common reference which reduces noise. The onboard oscillator ensures consistent sampling rates without needing external timing components.
The auto shut down feature helps manage power consumption when continuous sampling is not required. This is helpful for battery powered applications where energy efficiency is a priority.
For users needing many units for an industrial prototype or workshop, this bulk option saves time. It delivers the essential features needed for standard data acquisition projects.
Differential Sensing
Measuring differential signals removes common mode noise from your readings. This is essential for long wire runs where interference might occur.
Power Efficiency
Single-shot mode lets you wake up the chip only when needed. This extends battery life in remote monitoring sensors.
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6. 2PCS ADS1115 Module – Best Entry Level Pack
2PCS ADS1115 Module
16-bit resolution
Four input channels
I2C protocol
Programmable gain
This module pack offers a perfect entry point into high resolution ADC. It combines precision with simplicity so you can focus on your project logic rather than complex hardware issues.
Pros
- Excellent rating score
- Simple wiring setup
- Wide input voltage
- Programable ranges
- Compact form factor
Cons
- Limited to two boards
- Standard sample rates
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The programmable gain amplifier lets you adjust sensitivity to match your sensor. Whether you need to measure small voltages or large swings you can tune it easily.
Input flexibility supports different voltage levels so you can connect many types of sensors. This makes it versatile for both logic level signals and analog transducers.
If you want a reliable pair of boards to start testing your ideas this set is ideal. It ensures your readings are accurate without requiring advanced electronics knowledge.
Adjustable Gain
You can set the gain to amplify small signals for better accuracy. This is helpful when working with millivolt sensors directly.
Wide Input Range
Supporting a broad voltage range means you can use it with 3.3V or 5V logic systems. No level shifting is typically required for connections.
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7. Lonely Binary 3-Pack – Best Quality Finish and Support
Lonely Binary 3-Pack
16-bit resolution
ENIG gold finish
Four input channels
I2C protocol
This pack distinguishes itself with high quality construction and a focus on maker needs. The gold plating on the contacts ensures long term reliability and better solderability over time.
Pros
- Gold plated contacts
- Open source friendly
- Pre-soldered headers
- C++ Library support
- Chainable modules
Cons
- Higher cost than others
- Specialized branding
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It is designed to work seamlessly with ESP32 and modern C++ environments. The library support simplifies integration so you can write code faster without fighting drivers.
The ability to chain up to four modules on the same I2C bus gives you sixteen channels total. This is excellent for multi sensor data logging projects requiring many inputs.
If you value build quality and long term durability this is a premium choice. It is well suited for educational settings where components need to withstand frequent handling.
ENIG Finish
Electroless nickel immersion gold plating resists oxidation. This keeps connections clean and functional even after long periods of storage.
Open Source Design
The brand focuses on open source compatibility which helps with community support. You can easily find code examples and documentation online.
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8. Teyleten AD7606 – Best High Speed Sampling Option
Teyleten AD7606
16-bit resolution
8-channel sampling
200kHz speed
SPI protocol
This module is built for applications where capturing fast changing signals is important. Its 200kHz sampling rate allows you to see details that slower ADCs might miss entirely.
Pros
- High sample rate
- Synchronous sampling
- Multiple input channels
- Parallel data output
- Wide input voltage
Cons
- Lower user rating
- Complex SPI wiring
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All eight channels are sampled simultaneously which keeps data synchronized across sensors. This is critical when measuring signals that must be compared in real time without delay.
The SPI interface handles the data transfer efficiently but requires careful wiring on your board. You will need to allocate several pins for the communication lines to work properly.
If you are doing audio or vibration analysis this board offers the speed needed. It is a niche pick for users who prioritize high frequency capture over simplicity.
Simultaneous Sampling
Every channel measures at the exact same instant. This removes timing errors when analyzing relationships between multiple signals.
High Sampling Speed
200kHz is significantly faster than standard ADCs. It allows you to record rapidly fluctuating signals accurately.
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9. 4PCS ADS1115 Modules – Best Bulk Value Set
4PCS ADS1115 Modules
16-bit resolution
Four input channels
I2C protocol
High precision
This set provides four reliable modules for projects needing multiple sensors. Users appreciate the stability and accuracy of the readings in real world test conditions.
Pros
- Four units included
- Stable accurate readings
- Easy integration
- Wide compatibility
- Great for IoT
Cons
- Basic features only
- No advanced gain
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It integrates easily with popular platforms like ESP32 and Raspberry Pi. This makes it a top choice for IoT development where connectivity and data gathering are key.
The simplicity of the module means you can get started without fighting complex settings. It works out of the box for most standard sensor inputs.
If you are building a smart home system or factory monitoring network this set is efficient. It gives you plenty of boards to cover a large area reliably.
IoT Ready
Compatible with many microcontrollers used in smart devices. You can connect it to WiFi or Bluetooth modules easily.
Simplified Integration
Straightforward interface means less time debugging hardware. You spend more time on your project logic and features.
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10. HiLetgo ADS1115 – Best Standard Reliable Module
HiLetgo ADS1115
16-bit resolution
Four input channels
I2C protocol
Comparator mode
This single unit is a standard reference for ADC boards. It provides consistent performance and is widely used in many successful hobby and educational projects.
Pros
- Proven reliability
- Clear documentation
- Auto power saving
- Compact board
- Good value
Cons
- Basic specifications
- Single pack unit
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The auto shut down feature helps conserve power when readings are only needed periodically. This is a thoughtful detail for battery based applications.
It includes a comparator mode that can simplify circuit design for threshold detection. This removes the need for extra components when you just need to detect a limit.
If you need one solid board for a specific project this is a safe choice. It offers a balance of features and ease of use that fits many needs.
Power Saving
Auto power down reduces energy use between reads. This extends battery life in portable or remote setups.
Compact Design
The small size fits into tight spaces on your PCB. You save room for other components in crowded designs.
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Buying Guide – How to Choose the Best Arduino ADC Board
Selecting the right ADC board requires considering several technical factors. This guide explains what to look for to ensure you get a module that matches your project needs.
Resolution and Precision
Resolution determines how small a voltage change the ADC can detect. Higher bit numbers like 16 or 24 provide more detail which is crucial for sensitive measurements.
Choose higher resolution if you are measuring tiny signals. Lower resolution is fine for general voltage checks.
Channel Count
Channels are how many inputs the board can handle. You need enough channels to connect all your sensors without multiplexing.
If you have many sensors consider a board with more inputs. This reduces the need for multiple modules.
Communication Protocol
I2C uses two pins which saves space but might be slower. SPI uses more pins but allows faster data transfer speeds.
Pick I2C if you have limited pins. Choose SPI if you need high speed sampling.
Gain and Range
Programmable Gain Amplifiers adjust the input signal for better resolution. This helps when working with small voltages relative to your supply voltage.
Ensure the module supports gain if you have low voltage sensors. Check the input range matches your signal levels.
Sampling Rate
Sampling rate is how many readings you take per second. Higher rates are needed for fast changing signals like audio or vibration.
For slow sensors like temperature standard rates are enough. High speed is needed for fast signals.
Power Requirements
Check the operating voltage range to ensure it fits your system. Some boards need 5V while others work with 3.3V.
Ensure your power supply matches the module needs. Incompatible voltage can damage the board.
Build Quality
Look for reliable connectors and plating to prevent corrosion. Good build quality ensures the board lasts in varied environments.
Invest in higher quality if using in industrial settings. Standard boards work for hobby use.
Software Support
Libraries make it easier to read values quickly. Check if there are active libraries for your platform.
Good library support saves development time. Ensure compatibility with your IDE.
How to Use and Care for Your Arduino ADC Board
Start by connecting the power and ground pins to your microcontroller. Ensure the voltage levels match to avoid damage to either board.
Connect the data lines such as SDA and SCL for I2C modules. Make sure pull-up resistors are present on the bus.
Install the appropriate library and run a test sketch to read values. If readings are off, verify wiring and check input voltages.
Frequently Asked Questions
What is the difference between a 16-bit and 24-bit ADC?
A 16-bit ADC divides voltage into 65,536 levels while a 24-bit ADC divides it into over 16 million levels. This means 24-bit provides much finer detail for small changes.
Do I need pull-up resistors for I2C ADC boards?
Most microcontrollers have built-in pull-ups but adding external ones can improve stability. If you get unreliable data check your pull-up configuration.
Can I use an ADC board with ESP32?
Yes many I2C and SPI ADC boards are compatible with ESP32. You will need to use the correct pins and libraries for communication.
What is a programmable gain amplifier?
A PGA amplifies the input signal before conversion to improve resolution. This allows you to measure small voltages more accurately.
Why is my ADC reading unstable?
Unstable readings can come from noise or unstable power. Try adding capacitors to power lines and shielding wires to reduce interference.
Can I connect multiple ADC boards to one Arduino?
Yes if they have different I2C addresses or you use SPI select lines. You can stack modules to increase channel count significantly.
Final Thoughts on Choosing the Best Arduino ADC Board
The Teyleten ADS1115 offers the best balance of features for most users. It provides reliable precision and easy integration for a variety of projects.
For those needing high resolution, the ADS1256 is the superior choice. It handles complex measurement tasks with incredible detail and stability.
Always check current availability and specifications before ordering to ensure you get the version that fits your project needs.