2Pcs ADS1115 Module
5.0Editor score
Affordable Two Pack Option
Programmable Gain Amplifier
Wide Voltage Supply Range
In this guide
Analog to digital converters are essential components for any maker looking to read sensor data with microcontrollers that lack native analog inputs. These boards bridge the gap between real world signals and digital processing units.
We analyzed ten leading ADC modules based on resolution, channel count, interface type, and user feedback. Our goal is to highlight the most reliable options for hobbyists and professionals alike.
Each pick includes detailed specifications and real-world application notes. Prices fluctuate frequently so verify current listings before purchasing to ensure you get the best value for your specific needs.
Top 3 Picks for Best Arduino ADC Board
Teyleten Robot ADS1115
4.7Editor score
16 Bit High Resolution
4 Channel Input Support
I2C Communication Interface
HiLetgo ADS1256
4.6Editor score
24 Bit Precision ADC
8 Channel Data Acquisition
High Speed Sampling Rate
Top 10 Best Arduino ADC Board in 2026 Compared
The following table provides a side-by-side comparison of all ten selected ADC modules. Review the key specifications to find the board that matches your project requirements.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Teyleten ADS1115
16 Bit Resolution
4 Analog Channels
I2C Interface
2.0V to 5.5V
4.7Editor score
Editor's Choice
HiLetgo ADS1256
24 Bit Resolution
8 Single Ended Inputs
SPI Interface
30ksps Data Rate
4.6Editor score
Best Budget
2Pcs ADS1115
16 Bit Resolution
4 Differential Inputs
I2C Interface
7 Input Ranges
5.0Editor score
HiLetgo 3pcs ADS1115
16 Bit Resolution
4 Analog Channels
I2C Interface
PGA Included
4.3Editor score
4Pcs ADS1115
16 Bit Resolution
4 Differential Channels
I2C Interface
Single Shot Mode
4.1Editor score
2PCS ADS1115 I2C
16 Bit Resolution
4 Analog Channels
I2C Interface
Programmable Data Rate
5.0Editor score
Lonely Binary 3-Pack
16 Bit Precision
4 Single Ended Inputs
I2C Interface
Gold Plated Finish
4.4Editor score
Teyleten AD7606
16 Bit Resolution
8 Synchronous Channels
SPI Interface
200KHz Sampling
3.0Editor score
4PCS ADS1115 Modules
16 Bit Resolution
4 Channel Input
I2C Interface
Wide Compatibility
4.6Editor score
HiLetgo ADS1115
16 Bit Resolution
4 Analog Channels
I2C Interface
Comparator Mode
4.3Editor score
1. Teyleten Robot ADS1115 – Best Overall ADC Board
Teyleten Robot ADS1115
16 Bit High Precision
4 Channel Input
I2C Protocol Support
Wide Voltage Range
This ADC module stands out for its high precision and versatile interface options. With a rating of 4.7 stars it is a top choice for makers needing reliable analog conversion.
Pros
- Excellent resolution for sensors
- Easy I2C integration
- Highly rated by users
- Suitable for Pi
- Durable build quality
Cons
- May need external reference
- Not for high speed
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The 16-bit resolution ensures accurate readings for low voltage signals. The onboard PGA allows you to adjust gain for different sensor types effectively.
While it lacks the speed of 24-bit modules it balances performance and cost well. It is ideal for environmental monitoring or simple data logging tasks.
Buyers seeking a dependable board for Arduino or Pi projects will find this pack valuable. It simplifies connecting analog sensors without complex wiring.
High Precision Readings
The 16-bit conversion provides detailed data for sensitive measurements like temperature or humidity changes.
Easy Integration
I2C communication requires only two wires making it simple to add to existing circuits without clutter.
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2. HiLetgo ADS1256 – Best High Precision ADC Board
HiLetgo ADS1256
24 Bit Resolution
8 Input Channels
SPI Protocol
30ksps Rate
This board delivers exceptional accuracy with its 24-bit conversion capability. It is designed for projects requiring precise measurement of small voltage variations.
Pros
- Superior 24-bit resolution
- 8 channels available
- Onboard voltage source
- Low nonlinearity
- Great for industrial use
Cons
- Higher cost than others
- More complex setup
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The inclusion of an onboard reference voltage source ensures stable readings without external components. This makes it reliable for critical applications.
However the SPI interface and higher channel count may be overkill for simple hobby projects. It is best suited for advanced data acquisition tasks.
Select this if you need the highest precision available for your microcontroller. It excels in professional or research environments where data integrity is key.
Stable Reference Voltage
The built-in voltage reference eliminates the need for extra components and reduces noise in your readings.
Multi-Channel Support
Supporting eight channels allows you to monitor multiple sensors simultaneously without switching multiplexers.
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3. 2Pcs ADS1115 – Best Value ADC Board
2Pcs ADS1115
16 Bit Resolution
4 Channel Input
I2C Interface
Programmable Data Rate
This two-pack offers incredible value for users needing multiple boards. With a perfect rating of 5.0 it satisfies buyers looking for reliability at a low cost.
Pros
- Perfect for users
- High user rating
- Flexible data rates
- Multiple input ranges
- Compact design
Cons
- Basic packaging
- Limited documentation
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The programmable data rate allows you to balance speed and power consumption. This flexibility is useful for battery-operated devices.
While the package is simple the board itself performs well compared to pricier alternatives. It meets standard needs for most hobbyist applications.
Ideal for classrooms or workshops where many students need individual boards. You get quality performance without breaking your budget.
Flexible Data Rates
You can adjust sampling speed to optimize for battery life or faster data needs.
Multiple Input Ranges
Seven input ranges let you measure different voltage levels accurately across diverse sensors.
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4. HiLetgo 3pcs ADS1115 – Best for Raspberry Pi
HiLetgo 3pcs ADS1115
16 Bit Resolution
4 Channel Input
I2C Interface
Comparator Mode
This bundle provides three units which is excellent for multi-node projects. The comparator mode adds utility for triggering events based on voltage thresholds.
Pros
- Three pack included
- Comparator functionality
- I2C simplicity
- Wide voltage range
- Good for Pi
Cons
- Mixed user reviews
- Quality varies
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The I2C interface makes it straightforward to connect to a Raspberry Pi which lacks native analog inputs. It fills a critical gap in Pi hardware.
Some users report inconsistency in build quality but most find it functional. Ensure you check pins upon arrival.
Use this for distributed sensing projects where you need multiple boards. It is a practical choice for Pi-based automation systems.
Comparator Mode
This feature allows the board to alert you when a signal crosses a specific threshold automatically.
Pi Compatibility
Designed to work seamlessly with Raspberry Pi GPIO pins without level shifters.
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5. 4Pcs ADS1115 – Best Multi-Pack
4Pcs ADS1115
16 Bit Resolution
4 Channel Input
I2C Interface
Auto Shut Down
This set offers four boards for extensive testing or large scale deployments. It is perfect for scenarios where you need to monitor many points independently.
Pros
- Four units included
- Single shot mode
- Wide voltage range
- Simple setup
- Low power options
Cons
- Lower rating
- No headers included
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The auto shut down feature helps conserve power when data is not needed. This is beneficial for solar or battery-powered stations.
The rating is slightly lower suggesting some units might have issues. However for the price it remains a strong contender for bulk needs.
Choose this if you need to equip a large network of sensors. It saves time and money compared to buying single units.
Power Efficiency
Automatic shut down reduces energy usage when the system is idle.
Bulk Deployment
Having four units allows you to scale your project without multiple orders.
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6. 2PCS ADS1115 I2C – Best for Students
2PCS ADS1115 I2C
16 Bit Resolution
4 Channel Input
I2C Interface
Wide Voltage Range
A perfect rating of 5.0 indicates high satisfaction among buyers. This two-pack is great for students learning about analog to digital conversion.
Pros
- Perfect rating
- Two pack value
- Gain amplifier
- Wide voltage support
- Educational friendly
Cons
- Small package size
- Basic manual
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The programmable gain amplifier ensures you can read both high and low voltage signals. This versatility is key for varied experiments.
While the manual is basic online resources make up for it. You will find plenty of tutorials for this common module.
Recommend for labs where reliability and cost are both factors. It provides a smooth learning curve for new engineers.
Programmable Gain
Adjust the gain to amplify small signals for better resolution in sensitive tests.
Wide Voltage Support
Works with 3.3V and 5V logic so it fits most common development boards easily.
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7. Lonely Binary 3-Pack – Best for ESP32
Lonely Binary 3-Pack
16 Bit Resolution
4 Channel Input
I2C Interface
Gold Plated
This brand offers a distinct gold plated finish for better conductivity and durability. It is designed with ESP32 projects in mind.
Pros
- Gold plated finish
- ESP32 compatible
- High resolution
- RoHS compliant
- Pre-soldered headers
Cons
- Premium price
- Limited availability
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The pre-soldered headers save you time on assembly and reduce the risk of damage. Quality is generally higher than generic options.
While it costs more it justifies the expense with better build quality. Reliability is crucial for long-term or commercial prototypes.
Best for makers who prioritize component quality over saving a few dollars. It ensures your projects run smoothly without hardware issues.
Durability
The gold plating resists oxidation which helps maintain good electrical contact over time.
ESP32 Focus
Optimized for use with ESP32 microcontrollers for IoT and wireless sensor applications.
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8. Teyleten AD7606 – Best for High Speed
Teyleten AD7606
16 Bit Resolution
8 Synchronous Channels
SPI Interface
200KHz Rate
This module is built for high speed data acquisition tasks. It can sample at 200KHz allowing you to capture fast changing signals accurately.
Pros
- High speed sampling
- Synchronous capture
- 8 channels
- Bipolar inputs
- Oversampling modes
Cons
- Complex setup
- Low user rating
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The eight synchronous channels ensure all inputs are sampled at the exact same time. This is critical for phase analysis or power monitoring.
However the complexity and rating suggest it is hard to use. You need specific SPI knowledge and careful power management.
Use only if you need high bandwidth or precise timing. It is a specialist tool rather than a general purpose board.
High Bandwidth
Capture rapid signal changes that standard ADCs would miss or distort.
Synchronous Sampling
All channels sample simultaneously ensuring no timing skew between different sensor readings.
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9. 4PCS ADS1115 Modules – Best Bulk Pack
4PCS ADS1115 Modules
16 Bit Resolution
4 Channel Input
I2C Interface
High Precision
This bulk pack provides four boards for extensive use across multiple devices. It maintains a high rating of 4.6 indicating consistent quality.
Pros
- Four units in pack
- Stable readings
- Easy integration
- Broad compatibility
- Sensor optimized
Cons
- Basic headers
- Standard build
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The modules are optimized for sensor readings ensuring stable and accurate data. They work well with popular platforms like Arduino and ESP32.
While they are standard boards they perform reliably for most tasks. You get plenty of units for prototyping or production batches.
Select this for large scale sensor network setups. It offers a practical balance of quantity and performance.
Sensor Optimized
Calibrated to work well with common sensors like thermistors and pressure transducers.
High Compatibility
Works with almost any microcontroller supporting I2C making it versatile for various projects.
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10. HiLetgo ADS1115 – Best for Single Unit
HiLetgo ADS1115
16 Bit Resolution
4 Channel Input
I2C Interface
Comparator Mode
This is the classic single unit option for those who just need one board. It is cost effective for small projects.
Pros
- Single unit cost
- PGA amplifier
- Wide voltage
- I2C simplicity
- Reliable brand
Cons
- Basic features
- Limited channels
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The built-in PGA allows you to amplify small signals for better resolution. It is a simple and effective design.
While it lacks advanced features it covers the basics well. Many users rely on it for standard temperature and voltage monitoring.
Choose this if you only need one board and want to save money. It is a workhorse for basic analog tasks.
Programmable Gain
Adjust amplification to match your sensor range for maximum precision.
Cost Effective
Ideal for small scale projects where a full pack is unnecessary.
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Buying Guide – How to Choose the Best Arduino ADC Board
Selecting the right ADC board depends on several technical and practical factors. Here is what you need to consider before making a purchase.
Resolution
Resolution refers to the number of bits the converter uses to represent analog voltage. Higher resolution like 24-bit provides more precise data than 16-bit which is suitable for general use.
Choose 16-bit for most sensor projects and 24-bit for critical measurements where small changes matter.
Input Channels
Count how many sensors you need to connect simultaneously. Some boards support four inputs while others offer eight or more.
Ensure the board has enough channels to avoid needing a multiplexer which adds complexity.
Interface Type
I2C boards are easier to wire but slower than SPI boards. SPI offers faster data rates but requires more pins.
Pick I2C for simple setups and SPI for high-speed or multi-sensor data capture.
Sampling Rate
Sampling rate determines how fast the board can take measurements. Fast changing signals like audio or vibration require higher rates.
Most sensors need low rates so standard boards are sufficient for most tasks.
Gain Amplification
A Programmable Gain Amplifier helps read very small voltages accurately. It multiplies the signal before conversion.
Look for boards with PGA if you work with sensors that output microvolt signals.
Voltage Compatibility
Ensure the board works with your microcontroller logic voltage. Some boards support both 3.3V and 5V directly.
Avoid boards that need level shifters unless you already have them in your project.
Brand Reputation
Reputable brands often provide better quality control and documentation. Generic modules can vary in build quality.
Check user reviews to gauge reliability before committing to a specific brand.
Budget and Quantity
Buying in bulk packs often reduces the cost per unit significantly. This is beneficial for workshops or large scale deployments.
Balance your project needs with cost by comparing single units versus multi-packs.
How to Use and Care for Your Arduino ADC Board
Start by connecting the SDA and SCL pins to the corresponding I2C pins on your microcontroller. Power the board using the correct voltage range specified in the data sheet.
Install the necessary library in your Arduino IDE or development environment. Most boards work with standard libraries like Adafruit ADS1x15 which simplify code.
Protect your board from moisture and dust if used outdoors. Store spare modules in a dry place to prevent oxidation on pins.
Frequently Asked Questions
Do I need a library to use an ADC board with Arduino?
Yes most manufacturers provide libraries that handle the low level communication. These libraries simplify reading values and configuring settings without writing complex code.
Can I connect multiple ADC boards to one Arduino?
You can connect multiple boards if they support different I2C addresses. This allows you to expand the number of analog inputs available on your microcontroller.
What is the maximum input voltage?
Most boards accept input up to the supply voltage which is often 5V. Exceeding this limit can damage the chip so always check the datasheet.
Why is my reading noisy?
Noise often comes from unstable power or long wires. Use decoupling capacitors and keep wires short to improve signal quality.
Is I2C slower than SPI?
I2C is generally slower than SPI but is easier to wire. For most sensor applications the speed difference is not noticeable.
Can I use these boards with Raspberry Pi?
Yes these boards are compatible with Raspberry Pi GPIO pins. Since Pi lacks native analog inputs these boards are essential for reading sensors on Pi.
Final Thoughts on Choosing the Best Arduino ADC Board
This guide covered ten diverse ADC options ranging from high precision 24-bit modules to affordable multi-packs. Each serves different project needs effectively.
Prioritize resolution and channel count based on your specific sensors. A balance of features and cost will serve most hobbyists best.
Always check current prices and stock before buying as availability changes. With the right board your projects will gain better analog capabilities.