HiLetgo ADS1256 5V 8 Channel 24 Bit ADC Data Acquisition Board Module High Precision AD Collecting Data Acquisition Card
4.6Editor score
24-bit high resolution
Eight input channels
SPI communication protocol
In this guide
Analog to digital converters are essential for reading sensors with microcontrollers. They turn voltage signals into numbers your Arduino can process for projects.
We compared ten top rated boards based on resolution, channel count, and interface type. Our list includes verified user feedback and detailed technical specs.
Each pick shows key strengths and ideal use cases for makers. Prices change frequently so check current listings before buying your next development board.
Top 3 Picks for Best Arduino ADC Board
Teyleten Robot ADS1115 16 Bits 4 Channel Analog-to-Digital Converter Precised Develop Board Module Amplifier Board ADC I2C IIC for Arduino Raspberry Pi (Pack of 3pcs)
4.7Editor score
16-bit resolution for precision
Four analog input channels
I2C interface compatibility
2Pcs ADS1115 16 Bit I2C Module Precision ADC 4 Channel Analog-to-Digital Converter Development Board Pro Gain Amplifier for Arduino Raspberry Pi ADC Module
5.0Editor score
Affordable multi-pack option
Programmable gain amplifier
Wide voltage supply range
Top 10 Best Arduino ADC Board in 2026 Compared
This side-by-side table compares all ten selected boards. Look at resolution, channels, and interface to find the right fit for your sensor needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Teyleten ADS1115 Pack of 3
16-bit resolution
4 channels
I2C interface
2.0-5.5V
4.7Editor score
Editor's Choice
HiLetgo ADS1256
24-bit resolution
8 channels
SPI interface
30ksps rate
4.6Editor score
Best Budget
2Pcs ADS1115 Module
16-bit resolution
4 channels
I2C interface
8sps-860sps
5.0Editor score
HiLetgo 3pcs ADS1115
16-bit resolution
4 channels
I2C interface
PGA included
4.3Editor score
4Pcs ADS1115 Board
16-bit resolution
4 channels
I2C interface
Differential support
4.1Editor score
2PCS ADS1115 I2C
16-bit resolution
4 channels
I2C interface
7 input ranges
5.0Editor score
Lonely Binary 3-Pack
16-bit resolution
4 channels
I2C interface
ENIG plating
4.4Editor score
Teyleten AD7606
16-bit resolution
8 channels
SPI interface
Sync sampling
3.0Editor score
4PCS ADS1115 Modules
16-bit resolution
4 channels
I2C interface
Low voltage
4.6Editor score
HiLetgo ADS1115
16-bit resolution
4 channels
I2C interface
Comparator mode
4.3Editor score
1. Teyleten ADS1115 – Best Overall ADC Board
Teyleten ADS1115
16-bit precision
4 input channels
I2C interface
PGA gain amp
This ADS1115 module offers reliable 16-bit conversion with four channels. It is rated highly for accuracy and ease of use.
Pros
- High precision readings
- Wide voltage range
- Multi-pack value
- I2C simplicity
- Good library support
Cons
- No SPI option
- Small footprint
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The programmable gain amplifier helps measure small signals. You can adjust ranges from ±0.256V to ±6.144V for better sensitivity.
Trade-offs include limited data rate and no SPI support. These are acceptable for most slow sensor projects.
Ideal for hobbyists needing multiple ADCs. Get this pack for scalable projects with consistent quality.
Precision Sensor Reads
High resolution ensures accurate voltage measurements for delicate sensors like thermocouples.
Easy Integration
I2C wiring keeps connections simple and reduces pin usage on your board.
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2. HiLetgo ADS1256 – Best Premium Data Acquisition
HiLetgo ADS1256
24-bit resolution
8 input channels
SPI interface
30ksps sampling
The ADS1256 brings 24-bit precision for high accuracy needs. It supports eight channels for complex setups.
Pros
- Highest resolution
- More channels
- Faster data rate
- Internal reference
- Low noise
Cons
- Complex wiring
- Higher cost
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SPI communication allows faster sampling than I2C. The onboard reference improves stability during readings.
Complexity increases with more pins and setup steps. This is fine for advanced users.
Perfect for lab-grade projects. Choose this if precision is your top priority.
High Fidelity Sampling
24-bit depth captures minute voltage changes often missed by standard ADCs.
Multi-Channel Flexibility
Eight inputs allow monitoring many sensors without adding extra modules.
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3. 2Pcs ADS1115 – Best Budget ADC Pack
2Pcs ADS1115
16-bit resolution
4 input channels
I2C interface
7 range options
This two-pack delivers full ADS1115 features at minimal cost. It holds a perfect rating from buyers.
Pros
- Low cost
- High rating
- Double quantity
- Full specs
- Wide range
Cons
- Solder headers
- No extras
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All key specs match pricier options including gain and ranges. The value is hard to beat.
Headers may need soldering before use. This small effort saves money.
Great for classrooms or bulk use. Start your project with these reliable boards.
Unbeatable Value
Two boards let you build redundant or multi-node systems affordably.
Versatile Ranges
Seven voltage ranges cover both tiny and larger sensor signals.
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4. HiLetgo 3pcs ADS1115 – Best Value Pack
HiLetgo 3pcs ADS1115
16-bit resolution
4 input channels
I2C interface
3 boards
This three-pack offers solid specs for the price. It includes gain and comparator features.
Pros
- Three boards
- PGA included
- Comparator mode
- Wide supply
- Easy use
Cons
- Lower rating
- Basic build
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Multiple units help expand channel capacity across multiple devices. Setup remains straightforward.
Quality varies slightly with user rating. Still useful for many projects.
Use for spare units or larger builds. Good backup option for makers.
Scalable Design
Three boards support distributing sensors across different locations easily.
Comparator Utility
Built-in comparator helps trigger alerts without extra code.
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5. 4Pcs ADS1115 – Best Bulk Option
4Pcs ADS1115
16-bit resolution
4 input channels
I2C interface
4 boards
This four-pack provides excellent scale for large sensor arrays. Specs match standard ADS1115 modules.
Pros
- Four boards
- PGA features
- Differential support
- Auto shut down
- Wide range
Cons
- Basic quality
- Solder needed
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Differential inputs improve noise rejection in harsh environments. Auto shut down saves power.
Build is basic but functional. Solder headers first for reliability.
Best for mass deployments or teaching. You get many units cheaply.
Noise Immunity
Differential mode filters noise for cleaner readings from long wires.
Power Efficiency
Auto shut down reduces current draw when idle.
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6. 2PCS ADS1115 I2C – Compact Two-Pack
2PCS ADS1115 I2C
16-bit resolution
4 input channels
I2C interface
7 ranges
Another highly rated two-pack with full ADS1115 specs. It offers flexibility and reliability.
Pros
- High rating
- Two boards
- Gain control
- Wide voltage
- Clear labels
Cons
- No extras
- Small size
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Programmable gain helps adapt to different signal levels. Ranges cover most needs.
Simple design keeps costs down. Ensure headers are secure.
Suitable for home automation. Use one per sensor node.
Adaptive Sensitivity
Gain lets you fine-tune sensitivity for specific sensors.
Voltage Flexibility
Wide supply range works with 3.3V or 5V systems.
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7. Lonely Binary 3-Pack – Best for ESP32
Lonely Binary 3-Pack
16-bit resolution
4 input channels
I2C interface
ENIG plating
This pack features quality ENIG plating for durability. It supports 3.3V logic well.
Pros
- ENIG finish
- 3 boards
- Logic tolerant
- Library support
- RoHS compliant
Cons
- Solder headers
- Specific focus
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Good library support for C++ and Python. Designed for ESP32 users.
Headers may require soldering. This ensures better contact.
Pick for ESP32 projects. The finish helps solder joints last.
Superior Solderability
Gold plating resists oxidation and makes soldering easier.
ESP32 Ready
Logic levels match 3.3V boards without extra shifters.
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8. Teyleten AD7606 – Best High-Speed Sync
Teyleten AD7606
16-bit resolution
8 input channels
SPI interface
Sync sampling
Unique for simultaneous 8-channel sampling at high rates. Uses SPI for speed.
Pros
- High speed
- 8 channels
- Sync capture
- Bipolar input
- Parallel mode
Cons
- Low rating
- Complex setup
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Sync feature captures multi-channel data at exact times. Good for audio or vibration.
Rating suggests setup challenges. Documentation may be thin.
Use for specialized audio or motor monitoring. Not for simple tasks.
Simultaneous Sampling
All channels sample at once to avoid timing errors.
High Frequency
200kHz allows capturing faster changing signals.
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9. 4PCS ADS1115 Modules – Large Quantity Pack
4PCS ADS1115 Modules
16-bit resolution
4 input channels
I2C interface
Low voltage
This four-pack has high ratings for stability. All units perform consistently.
Pros
- High rating
- 4 boards
- Standard specs
- Simple wiring
- Stable readings
Cons
- Solder headers
- No extras
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Simple wiring keeps project build easy. Four channels cover most sensors.
Headers likely need soldering. Prepare tools beforehand.
Ideal for workshops needing spares. Use for sensor networks.
Consistent Performance
Multiple units work alike for uniform data collection.
Stable Readings
Low noise design ensures reliable sensor values.
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10. HiLetgo ADS1115 – Standard Single Board
HiLetgo ADS1115
16-bit resolution
4 input channels
I2C interface
Comparator mode
A single standard board with good features. It works well for small projects.
Pros
- Single unit
- PGA gain
- Comparator mode
- Wide supply
- Good support
Cons
- Only one
- Basic
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Comparator mode allows simple triggers. Full gain control is included.
Only one unit limits expansion. Good for initial testing.
Get for prototyping. Add more boards as needed.
Simple Triggers
Comparator outputs digital signals when thresholds are met.
Prototyping Friendly
Easy to try basic ADC functions without bulk.
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Buying Guide – How to Choose the Best Arduino ADC Board
Choosing the right ADC requires knowing resolution, channels, and interface needs.
Resolution Requirements
Resolution determines how precisely voltage is converted to digital. 16-bit is standard for many sensors. 24-bit offers higher precision for tiny signals.
Select higher resolution if you need extreme accuracy in measurements.
Channel Count
Count how many analog sensors you need at once. Most boards have 4 channels. Some offer 8 for complex setups.
Ensure the board covers all inputs you plan to use simultaneously.
Interface Type
I2C uses fewer pins and is easier to wire. SPI is faster but uses more pins. Match your microcontroller options.
Choose I2C for simplicity or SPI for speed needs.
Gain Amplification
Programmable Gain Amplifiers let you adjust voltage ranges. This helps measure very small voltages. Some boards include this feature.
Look for PGA if you use low-voltage sensors.
Voltage Range
Ensure the ADC supports your board voltage. Many work from 3.3V to 5V. Avoid mismatches to prevent damage.
Check supply range matches your Arduino or ESP32 voltage.
Build Quality
Quality affects reliability. Better boards have clean traces and clear labels. Some offer gold plating for durability.
Opt for better finishes if soldering repeatedly.
Software Support
Libraries simplify coding. Look for C++ or Python options. Community support helps debug issues.
Prefer boards with active library communities.
Pack Options
Buying packs reduces cost per unit. This helps for multi-node projects. Consider single units for initial tests.
Packs are better for large scale deployment.
How to Use and Care for Your Arduino ADC Board
Connect VCC and GND to your microcontroller power. Use logic levels matching your board.
Wire SDA and SCL pins for I2C. Add pull-up resistors if needed for stable signals.
Keep boards away from heat and moisture. Store in static-safe bags when not using.
Frequently Asked Questions
What is the main purpose of an ADC board for Arduino?
Arduino lacks analog inputs. An ADC board converts analog signals to digital. This lets your project read sensors like temperature or light. It bridges voltage values to code.
Is 16-bit resolution enough for most projects?
Yes, 16-bit resolution is sufficient for most sensor tasks. It captures fine voltage changes accurately. Use 24-bit only for ultra-fine needs.
Can I use these boards with ESP32?
Most work with ESP32. Ensure voltage levels match. Some boards include logic tolerance. Check specs for compatibility.
Do these boards support differential inputs?
Some models like ADS1115 support differential inputs. This helps reduce noise. Others offer single-ended only.
How do I install libraries for ADS1115?
Use the Arduino Library Manager. Search for ADS1115 and install. Many popular libraries are available. Follow examples to start.
Can I daisy-chain multiple ADC boards?
Yes, I2C boards can share the bus. Use different addresses. This allows expanding channels. Limit is usually four per bus.
Final Thoughts on Choosing the Best Arduino ADC Board
This guide reviewed ten top ADC boards. Each offers unique features for makers. Pick based on your channel needs.
Prioritize resolution and gain if precision matters. Simpler boards suit basic projects.
Prices change often. Verify current listings and specs before buying.