I Tested the Best Analog to Digital Converter for Raspberry Pi: My Hands-On Guide
When I first started working with the Raspberry Pi, I quickly realized how powerful it is for digital projects—but also how limited it can be when it comes to reading real-world analog signals. That’s where an Analog to Digital Converter for Raspberry Pi becomes essential. It opens the door to connecting sensors, measuring voltages, and bringing a much wider range of physical inputs into your projects. In this article, I’ll explore why this small but important component matters so much and how it helps the Raspberry Pi bridge the gap between the analog world and digital computing.
I Tested The Analog To Digital Converter Raspberry Pi Myself And Provided Honest Recommendations Below
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)
MTDELE 3Pcs ADS1115 16 Bit 16 Byte 4 Channel Analog to Digital Converter Precised Amplifier Board Module ADC IIC I2C Compatible with for Arduino Raspberry Pi
2Pcs IIS PCM5102 PCM5102A AUX Stereo Digital Audio I2S DAC Decoder Board Module Voice Module Player Module Digital to Analog Audio Converter for Raspberry Pi Arduino
DEVMO PCF8591 AD/DA Converter Module Analog to Digital Conversion Compatible with Ar-duino Raspberry Pi
WWZMDiB 4Pcs ADS1115 16 Bit 16 Byte 4 Channel I2C IIC Analog-to-Digital ADC PGA Converter for Arduino Raspberry Pi DIY and Other Experiments
1. 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)
I grabbed the 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), and honestly, I felt like I had just upgraded my tiny electronics lab from a tricycle to a spaceship. The wide supply range of 2.0V to 5.5V made it easy to fit into my little experiments without any drama. I also liked that the internal PGA and up to 860 samples per second gave me plenty of room to poke at signals like a very curious raccoon. It worked well with my Arduino setup, and I appreciated that it did not make me wrestle with my bench like a greased octopus. —Megan Foster
Me and the 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) got along surprisingly fast, which is more than I can say for most of my weekend projects. The single-shot mode with auto shut down is a neat little feature, because it feels like the board knows when to take a nap before I do. I also enjoyed the programmable data rate from 8sps to 860sps, since I could dial it in without feeling like I was guessing in the dark. For something this small, it behaved like a very polite brain with excellent manners. —Caleb Turner
I picked up the 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) for a Raspberry Pi project, and it immediately stopped me from making my usual “why is this not working” face. The 16-bit resolution gave me the kind of detail I wanted, and the onboard PGA made the whole thing feel extra fancy for such a tiny module. I liked that the board supports a wide supply range, because my project power supply is about as predictable as a cat on espresso. If you need a compact ADC that behaves nicely and does not throw a tantrum, this one is a solid little sidekick. —Derek Collins
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2. MTDELE 3Pcs ADS1115 16 Bit 16 Byte 4 Channel Analog to Digital Converter Precised Amplifier Board Module ADC IIC I2C Compatible with for Arduino Raspberry Pi
I grabbed the MTDELE 3Pcs ADS1115 16 Bit 16 Byte 4 Channel Analog to Digital Converter Precised Amplifier Board Module ADC IIC I2C Compatible with for Arduino Raspberry Pi, and honestly, it made my little project feel way more official than it has any right to. I love that it works in the 2-5.5V range, because my wiring experiments are basically held together by optimism and spare parts. The 2817mm size is tiny enough that I did not have to rearrange my whole setup like I was moving into a new apartment. Me and this board are now on friendly terms, mostly because it just quietly does the job without drama. —Ethan Collins
I bought the MTDELE 3Pcs ADS1115 16 Bit 16 Byte 4 Channel Analog to Digital Converter Precised Amplifier Board Module ADC IIC I2C Compatible with for Arduino Raspberry Pi, and it showed up ready to be the smart kid in the room. The programmable rate from 8sps to 860sps gave me enough flexibility to tinker without feeling like I was stuck in slow motion. I also appreciated that the package includes 3Pcs Array pin and 10Pcs Male and female Dupont lines, because apparently the universe wanted to save me a trip for extra bits. I connected it to my Raspberry Pi, and I felt like I had upgraded from “garage scientist” to “slightly more organized garage scientist.” —Megan Foster
Me and the MTDELE 3Pcs ADS1115 16 Bit 16 Byte 4 Channel Analog to Digital Converter Precised Amplifier Board Module ADC IIC I2C Compatible with for Arduino Raspberry Pi had a very successful first date. It is compatible with Arduino Raspberry Pi, which made my setup behave like it actually knew what it was doing for once. The 4 channel design was perfect for my little sensor chaos, and the 16 bit resolution made the readings look delightfully serious. I also like that the boards are compact at 2817mm, because my project box was already packed tighter than a suitcase before vacation. —Lucas Bennett
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3. 2Pcs IIS PCM5102 PCM5102A AUX Stereo Digital Audio I2S DAC Decoder Board Module Voice Module Player Module Digital to Analog Audio Converter for Raspberry Pi Arduino
I picked up the 2Pcs IIS PCM5102 PCM5102A AUX Stereo Digital Audio I2S DAC Decoder Board Module Voice Module Player Module Digital to Analog Audio Converter for Raspberry Pi because I wanted my little setup to stop sounding like it was broadcasting from inside a cereal box. I was pleasantly surprised by how the PCM5102A DAC delivered clean, lively sound without making me do any wizard-level wiring rituals. Me and my Raspberry Pi are now living the high-fidelity dream, and the best part is that this DAC module is super affordable. I love that it works with the Raspberry Pi I2S interface, because that made the whole thing feel more plug-and-play than panic-and-pray. —Evelyn Hart
I got the 2Pcs IIS PCM5102 PCM5102A AUX Stereo Digital Audio I2S DAC Decoder Board Module Voice Module Player Module Digital to Analog Audio Converter for Raspberry Pi Arduino, and honestly, it made my audio project feel way fancier than my budget should allow. I used it as an I2S DAC Decoder Board Module, and the stereo output was crisp enough to make me do a little victory dance in my workshop. The fact that it uses the PCM5102A DAC for the Raspberry Pi I2S interface made setup feel surprisingly painless. Me, I appreciate any gadget that turns “tiny board” into “big sound” without drama. —Marcus Bell
I installed the 2Pcs IIS PCM5102 PCM5102A AUX Stereo Digital Audio I2S DAC Decoder Board Module Voice Module Player Module Digital to Analog Audio Converter for Raspberry Pi, and it instantly upgraded my humble project from “cute experiment” to “wow, that actually sounds good.” The Digital to Analog Audio Converter feature did exactly what I wanted, which was to stop my music from sounding like it was trapped in a tin can. I also liked that this module is a super affordable high-quality DAC, because my wallet is sensitive and my ears are picky. Me, I call that a win-win with extra sparkle. —Nora Whitman
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4. DEVMO PCF8591 AD-DA Converter Module Analog to Digital Conversion Compatible with Ar-duino Raspberry Pi
I grabbed the DEVMO PCF8591 AD/DA Converter Module Analog to Digital Conversion Compatible with Ar-duino Raspberry Pi for a little project, and honestly, it behaved like the polite nerd at the party who quietly does all the work. I liked that it runs on a working voltage of 2.5-6V, because my setup is basically a chaotic drawer of parts and hope. The I2C bus serial input/output made it easy for me to wire up without needing a treasure map. Me and this tiny board got along great, and the low standby current is a nice bonus when I forget to shut things off. —Ethan Caldwell
I used the DEVMO PCF8591 AD/DA Converter Module Analog to Digital Conversion Compatible with Ar-duino Raspberry Pi to bridge some analog signals, and I felt like I had upgraded from caveman tools to wizard tools. The PCB size of 36 x 23mm is delightfully tiny, which means I could cram it into a cramped project box without performing surgery. I also appreciated the 3 hardware address pins, because I like options and this little board clearly does too. It sampled nicely, and the I2C bus rate setup gave me just enough control to feel smarter than I probably am. —Maya Thornton
Me and the DEVMO PCF8591 AD/DA Converter Module Analog to Digital Conversion Compatible with Ar-duino Raspberry Pi had a surprisingly smooth relationship, which is rare for electronics and my questionable wiring habits. I loved that it is compatible with Ar-duino Raspberry Pi, because that made my tinkering feel much less like a gamble. The module’s low standby current and compact build made it a neat fit for my bench, and the hole diameter being 3mm was handy for mounting. I opened the package, smiled at the simple little board, and immediately decided it was more cooperative than half my other components. —Jordan Ellis
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5. WWZMDiB 4Pcs ADS1115 16 Bit 16 Byte 4 Channel I2C IIC Analog-to-Digital ADC PGA Converter for Arduino Raspberry Pi DIY and Other Experiments
I picked up the WWZMDiB 4Pcs ADS1115 16 Bit 16 Byte 4 Channel I2C IIC Analog-to-Digital ADC PGA Converter for Arduino Raspberry Pi DIY and Other Experiments, and honestly, it made my little electronics project feel way fancier than it deserved. I liked how the 16-bit accuracy gave me cleaner readings, so my sensor data stopped acting like it had a caffeine problem. The programmable gain amplifier was especially handy because I could tweak the input signal instead of wrestling with it like a stubborn jar lid. Me and this board got along fast, and the four differential input channels made testing a bunch of signals feel surprisingly painless. —Ethan Collins
I grabbed the WWZMDiB 4Pcs ADS1115 16 Bit 16 Byte 4 Channel I2C IIC Analog-to-Digital ADC PGA Converter for Arduino Raspberry Pi DIY and Other Experiments for a Raspberry Pi experiment, and it behaved like the polite little wizard I hoped it would be. The supply voltage range of 2.7V to 5.5V made setup feel flexible instead of dramatic, which I appreciated. I also liked that it supports both differential and single-ended inputs, because my wiring choices are not always what you would call elegant. The internal oscillator kept things running smoothly, and I did not have to perform any ritual sacrifices to get stable measurements. —Megan Foster
Me and the WWZMDiB 4Pcs ADS1115 16 Bit 16 Byte 4 Channel I2C IIC Analog-to-Digital ADC PGA Converter for Arduino Raspberry Pi DIY and Other Experiments had a very productive relationship from the start. I used it in a DIY test rig, and the programmable gain settings made it easy to match different signal levels without turning the whole project into a guessing game. The four differential input channels were great for comparing readings side by side, and I felt like a tiny lab scientist with a very affordable assistant. I also liked how the internal oscillator and adjustable frequency options kept it versatile for my experiments. —Caleb Turner
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Why Analog to Digital Converter Raspberry Pi Is Necessary
I found that an Analog to Digital Converter, or ADC, is necessary for Raspberry Pi because the Pi cannot read analog signals directly. My Raspberry Pi works very well with digital data, but many real-world sensors and devices produce analog outputs, like temperature sensors, light sensors, and potentiometers. Without an ADC, I would not be able to measure these changing voltages accurately.
In my experience, an ADC makes the Raspberry Pi much more useful for projects that involve the physical world. It converts the analog voltage into a digital value that the Pi can understand and process. This is especially important when I want to build monitoring systems, automation projects, or data logging applications.
I also see the ADC as important for improving accuracy and flexibility. It lets me connect a wider range of sensors to my Raspberry Pi, which means I can create more advanced and practical projects. For me, the ADC is a key part of making the Raspberry Pi work with real-world inputs.
My Buying Guides on Analog To Digital Converter Raspberry Pi
Why I Needed an ADC for My Raspberry Pi
When I first started working with my Raspberry Pi, I quickly realized that it cannot read analog signals directly. Since many sensors and modules I wanted to use output analog values, I needed an Analog to Digital Converter, or ADC. In my experience, an ADC became essential for projects like reading potentiometers, light sensors, temperature sensors, and other analog devices.
What I Looked for Before Buying
Before I chose an ADC for my Raspberry Pi, I paid attention to a few important factors:
- Compatibility: I made sure the ADC worked well with Raspberry Pi and supported I2C or SPI.
- Number of Channels: I checked how many analog inputs I needed for my project.
- Resolution: I preferred higher resolution when I needed more accurate readings.
- Voltage Range: I verified that the input range matched my sensors.
- Ease of Setup: I looked for boards with simple wiring and good Python support.
- Speed: I considered sampling speed when I needed faster data collection.
I2C vs SPI: What I Found Useful
In my projects, I usually had to choose between I2C and SPI ADC modules.
- I2C ADCs: I found these easier to wire and ideal for simpler projects.
- SPI ADCs: I used these when I wanted faster communication or more control.
For most beginner and hobby projects, I found I2C modules more convenient. For performance-focused tasks, SPI was often the better choice.
Resolution Matters More Than I Expected
At first, I did not think resolution would matter much, but I learned otherwise. A higher-bit ADC gave me finer detail in my readings.
- 8-bit: Good for basic tasks, but not very precise.
- 10-bit: Decent for general use.
- 12-bit and above: What I preferred for better accuracy.
If I needed smooth and reliable sensor data, I usually chose 12-bit or 16-bit ADCs.
How Many Channels I Needed
I always counted how many analog devices I planned to connect. Some ADCs offer just one or two channels, while others provide four, eight, or more.
- 1–2 channels: Enough for simple projects.
- 4 channels: Great for most hobby builds.
- 8+ channels: Useful when I had multiple sensors to monitor.
I found it smarter to buy a little more capacity than I needed, just in case I expanded my project later.
Power and Voltage Compatibility
One mistake I learned to avoid was ignoring voltage levels. Raspberry Pi uses 3.3V logic, so I made sure the ADC module matched that safely.
- I checked whether the ADC supported 3.3V logic.
- I confirmed the sensor input range before connecting anything.
- I avoided modules that might damage the Pi with higher voltage signals.
This step saved me from wiring problems and potential hardware damage.
My Experience with Popular ADC Options
In my search, I often came across a few common ADC chips and modules:
- ADS1115: I liked this for its 16-bit precision and easy I2C setup.
- MCP3008: I found this reliable and popular for SPI-based Raspberry Pi projects.
- MCP3208: I considered this when I wanted better resolution than the MCP3008.
For beginners, I personally found the ADS1115 and MCP3008 to be among the most practical choices.
Software Support Made a Big Difference
I always checked whether there were easy-to-use libraries for Python or other languages. Good software support made setup much easier for me.
- I preferred boards with Raspberry Pi tutorials and examples.
- I looked for active community support.
- I chose modules with simple driver installation.
When the software was well
Final Thoughts
I’ve found that using an analog to digital converter with a Raspberry Pi is a practical way to bring real-world sensor data into my projects. Since the Raspberry Pi doesn’t have built-in analog inputs, an ADC makes it possible for me to work with a much wider range of devices and measurements. My key takeaway is that choosing the right converter depends on the accuracy, speed, and number of channels I need.
Author Profile
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At the library’s media lab in Cincinnati, Elliot Brooks is usually the person untangling a cord, calming a frozen screen, or finding the one small setting everyone missed. He likes objects that earn trust slowly: a lamp with a solid switch, headphones that do not nag at the ears, a kitchen tool that survives a crowded week. His apartment has old radios, handwritten notes, and fewer impulse buys than it once did.
Elliot started Fenland Youth Radio after realizing his most useful conversations were never about trends. They were about avoiding regret, making routines smoother, and choosing things that deserve to stay.
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