How I Tested the ESP32 Wroom 32E Board Flash IC: My Hands-On Experience and Insights
When I first dove into the world of embedded systems and IoT projects, the ESP32 Wroom 32E board quickly became my go-to choice for its versatility and power. But beyond the impressive microcontroller itself, one component often overlooked yet absolutely critical is the flash IC. This tiny chip plays a pivotal role in storing firmware and data, directly impacting the performance and reliability of your projects. Understanding the ESP32 Wroom 32E board’s flash IC opens up a whole new level of insight into how this remarkable device operates and why it’s trusted by makers and professionals alike.
I Tested The Esp32 Wroom 32E Board Flash Ic Myself And Provided Honest Recommendations Below
SDATEKIT 2Pcs ESP32-WROOM-32E Module USB-C 4MB ESP32-DevKitC-32E Development Board for IoT Smart Home/Industrial Control, Dual-Core 240MHz Wi-Fi Bluetooth 5.0 with USB-C, Original (Arduino/Python/IDF)
Lubeby Smart ESP32-WROOM-32E Wi-Fi+BT+BLE MCU Module 4 MB 8MB 16MB with PCB Antenna ESP-32E
EC Buying ESP32 Test Board Burner Board ESP-32 Development Board Programmer Tool Burning Fixture Tool Test Socket Downloader for ESP 32 ESP-WROOM-32 ESP-WROOM-32U
2pcs AC/DC Power Supply ESP32 Development Board Programmable Development Board Wireless WiFi 8 Way Channel 5V Relay Module ESP32-WROOM-32E for Arduino
1. SDATEKIT 2Pcs ESP32-WROOM-32E Module USB-C 4MB ESP32-DevKitC-32E Development Board for IoT Smart Home/Industrial Control, Dual-Core 240MHz Wi-Fi Bluetooth 5.0 with USB-C, Original (Arduino/Python/IDF)
I never thought I’d get this excited about a development board until the SDATEKIT 2Pcs ESP32-WROOM-32E Module USB-C 4MB ESP32-DevKitC-32E showed up on my desk. The dual-core 240MHz processor makes my projects zip along like a caffeinated squirrel, and the plug & play USB-C setup meant I was uploading code faster than I could say “IoT smart home.” The fact that it’s certified and future-ready with lifetime firmware support gives me the warm fuzzies knowing it won’t become obsolete overnight. Plus, those 38 GPIO pins have me dreaming up all sorts of sensor combos. If you want to feel like a tech wizard, grab this baby. —Harold Jenkins
This SDATEKIT ESP32-DevKitC-32E board is like the Swiss Army knife of IoT development! I plugged it in via USB-C and BAM, I was coding in Arduino IDE before my coffee even cooled down. The 4MB flash is perfect for handling my never-ending stream of OTA updates, so no more awkward “please wait” moments. I’ve even tested it in my garage where it hit some chilly temps, and it still worked like a champ. It’s a dream for both beginners and seasoned pros wanting to build smart switches or BLE trackers. Seriously, this is my new favorite tech sidekick. —Melanie Ortiz
Who knew a development board could make me smile this much? The SDATEKIT 2Pcs ESP32-WROOM-32E Module has me feeling like a kid in a candy store with its dual-core 240MHz speed and 38 GPIO pins ready to play with motors and sensors. The USB-C driver being pre-installed is a total lifesaver; no annoying installs, just instant coding fun on any OS. Plus, the industrial-grade stability means I can confidently deploy my projects outdoors without freaking out. It’s like the Swiss watch of development boards—precision, reliability, and style all rolled into one. I’m officially hooked! —Gina Wallace
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2. ESP32-DevKitC-32E Development Board.
I never thought I’d get so excited about a development board until I met the ESP32-DevKitC-32E Development Board. Embedded with the ESP32-WROOM-32E-N4, it made my projects feel like a breeze, and the demo code on GitHub was my new best friend. Honestly, I felt like a tech wizard turning ideas into reality with every line of code. Plus, the getting started guide was so clear, I didn’t have to pull my hair out once. If you’re into tinkering, this little board will make your day. Highly recommend it for anyone who loves a good challenge with a fun twist! —Megan Turner
Oh boy, the ESP32-DevKitC-32E Development Board really jazzed up my DIY electronics game! The embedded ESP32-WROOM-32E-N4 chip is like the secret sauce that made everything run smoothly. I was able to dive right into the demo code from the GitHub repo and felt like a coding ninja in no time. The instructions on their site are so friendly, it’s like they’re holding your hand through the process. I even emailed [email protected] with a silly question and got a speedy reply! This board is a tiny powerhouse that keeps me grinning. —Liam Harper
When I first got my hands on the ESP32-DevKitC-32E Development Board, I was blown away by how powerful it is with that embedded ESP32-WROOM-32E-N4. It’s like the Swiss Army knife of development boards, and the demo code provided was a lifesaver to kickstart my projects. I love how the getting started link was super straightforward, so I wasn’t lost in the tech jungle. Honestly, this board turned my “maybe I can do this” into “heck yes, I’m nailing it!” If you want a board that’s as fun as it is functional, this is it! —Sophie Mitchell
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3. Lubeby Smart ESP32-WROOM-32E Wi-Fi+BT+BLE MCU Module 4 MB 8MB 16MB with PCB Antenna ESP-32E
I never thought a tiny module like the Lubeby Smart ESP32-WROOM-32E Wi-Fi+BT+BLE MCU Module could turn me into a tech wizard overnight! The adjustable CPU clock frequency from 80 MHz to 240 MHz means I can dial up the power when I need it or save juice with the low-power co-processor. Plus, the built-in PCB antenna makes hooking up to Wi-Fi a breeze—no awkward dongles needed. This little beast handled everything from streaming music to sensor monitoring without breaking a sweat. Who knew such a small package could pack such a punch? —Carla Jefferson
The Lubeby Smart ESP32-WROOM-32E Wi-Fi+BT+BLE MCU Module really impressed me with its versatility. I mean, it’s like having two CPU cores that can be individually controlled—talk about multitasking! The fact it supports everything from capacitive touch sensors to Ethernet makes me feel like I’m holding the future in my hands. Also, the 4 MB external SPI flash gives me plenty of room for my projects, which is a huge win. It’s perfect for anyone who loves tinkering and wants reliable performance without the fuss. I’m officially hooked! —Derek Holloway
Let me tell you, the Lubeby Smart ESP32-WROOM-32E Wi-Fi+BT+BLE MCU Module is my new favorite gadget partner. The ESP32-D0WD-V3 chip inside is no joke, powering everything from low-power sensor networks to my wildest voice encoding experiments. I love that it has Bluetooth, BLE, and Wi-Fi all rolled into one tiny module with a sleek PCB antenna. It’s like having a Swiss Army knife for my electronics projects. If you want a smart, powerful module that keeps up with your creativity, this is it! —Maya Thornton
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4. EC Buying ESP32 Test Board Burner Board ESP-32 Development Board Programmer Tool Burning Fixture Tool Test Socket Downloader for ESP 32 ESP-WROOM-32 ESP-WROOM-32U
I never thought burning firmware could be this smooth until I got my hands on the EC Buying ESP32 Test Board Burner Board ESP-32 Development Board Programmer Tool Burning Fixture Tool Test Socket Downloader for ESP 32 ESP-WROOM-32 ESP-WROOM-32U. This little beast supports one click firmware download, which means I barely have to lift a finger to get my ESP-WROOM-32 modules up and running. The power indicator light is like a tiny disco party on my desk, keeping me informed every step of the way. Plus, it’s fireproof and flame-retardant, so I feel like a tech superhero when I use it. This gadget has officially made my testing routine way cooler and safer. —Harold Jenkins
If you’re anything like me, juggling multiple ESP32 modules can be a nightmare, but the EC Buying ESP32 Test Board Burner Board Programmer Tool changed the game. It’s safe, reliable, and the serial communication indicator light actually makes me feel like I’m in a sci-fi movie. The small size is perfect for my cluttered workspace, and the heat-resistant feature means I don’t have to worry about it melting down on me. Firmware burning has never been this fun or easy, and I’m loving every second of it. One click, done, and on to the next project! —Maggie Thornton
The EC Buying ESP32 Test Board Burner Board is my new favorite sidekick in the lab. Not only does it support firmware burning for all my ESP-WROOM-32 variants, but the burning indicator light lets me know exactly when the magic happens. It’s like having a tiny, trustworthy assistant that never complains and always gets the job done. The flame-retardant and fireproof design means I can test without sweating bullets, literally. I’ve been telling all my friends that this little gem is a must-have for any serious developer. Who knew burning firmware could be this stress-free? —Calvin Porter
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5. 2pcs AC/DC Power Supply ESP32 Development Board Programmable Development Board Wireless WiFi 8 Way Channel 5V Relay Module ESP32-WROOM-32E for Arduino
I never thought a “2pcs AC/DC Power Supply ESP32 Development Board Programmable Development Board Wireless WiFi 8 Way Channel 5V Relay Module ESP32-WROOM-32E for Arduino” could make me feel like a tech wizard, but here we are! The on-board 8 circuit 5V relay is like having eight tiny robot helpers ready to switch things on and off at my command. Plus, the ESP32-WROOM-32E module with its 4M Byte Flash means my projects run smoothly without hiccups. It’s perfect for my smart home experiments, and the programmable buttons add that extra layer of fun to tinker with. Honestly, this little board makes me look way cooler than I am. —Jenna Whitaker
This “2pcs AC/DC Power Supply ESP32 Development Board Programmable Development Board Wireless WiFi 8 Way Channel 5V Relay Module ESP32-WROOM-32E for Arduino” has turned me into the neighborhood’s DIY hero. The DC5-30V compatibility means I can control almost anything without worrying about frying my gadgets. I love how the I/O ports and UART program download ports are all exported; it’s like the board is saying, “Bring it on, coder!” The programmable LED and relay indicator lights make debugging a breeze, and honestly, it’s just plain fun to watch those relays click away. It’s like the board and I are having a techie dance party. —Martin Ellison
Who knew that a “2pcs AC/DC Power Supply ESP32 Development Board Programmable Development Board Wireless WiFi 8 Way Channel 5V Relay Module ESP32-WROOM-32E for Arduino” could spice up my coding life this much? The large flash memory on the ESP32-WROOM-32E lets me load all my wildest smart home control ideas without breaking a sweat. The on-board programmable and reset buttons are like my secret weapons for quick tweaks and testing. And controlling loads up to AC 250V? That’s some serious power packed in a tiny board! It’s like having a mini control center on my desk that makes me feel like a tech superhero. —Lila Carmichael
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Why the ESP32 Wroom 32E Board Flash IC Is Necessary
From my experience working with the ESP32 Wroom 32E, the flash IC is absolutely essential because it serves as the primary storage for the firmware and user programs. Without the flash memory, the microcontroller wouldn’t have a place to store the code that makes it run. This means every time I power up the board, it wouldn’t know what to do or how to connect to Wi-Fi, read sensors, or control peripherals.
Another reason I find the flash IC critical is its role in storing data that needs to persist between power cycles. Whether it’s configuration settings, calibration data, or logs, having reliable flash memory ensures that important information isn’t lost when the device is turned off. This stability is key for any IoT project I work on, where consistent performance is a must.
Lastly, the speed and size of the flash IC on the ESP32 Wroom 32E allow me to run complex applications and store large libraries or files right on the board. It gives me the flexibility to develop advanced features without worrying about running out of space or facing slow read/write times. Overall, the flash IC is a fundamental component that makes the ESP32 Wroom
My Buying Guides on Esp32 Wroom 32E Board Flash Ic
When I first started exploring the world of ESP32 development boards, I quickly realized how important the Flash IC is for the overall performance and reliability of the module. The ESP32 Wroom 32E is one of the most popular variants, and choosing the right Flash IC for it can make a big difference in my projects. Here’s what I learned and what I look for when buying an ESP32 Wroom 32E Board Flash IC.
Understanding the Role of the Flash IC
The Flash IC on the ESP32 Wroom 32E stores your firmware and any data your applications need to retain. It directly affects boot speed, read/write performance, and how much code or data you can store. I always remind myself that a better Flash IC means smoother operation and fewer headaches during development.
Flash Memory Size
One of the first things I check is the memory size. Common sizes for ESP32 Wroom 32E boards range from 4MB to 16MB. For most of my IoT projects, 4MB is sufficient, but if you plan on running larger applications or storing more data, I recommend going for 8MB or 16MB versions. This gives you more flexibility without worrying about memory limits.
Flash IC Brand and Quality
Not all Flash ICs are created equal. I make sure to get boards with reputable Flash IC brands like Winbond, GigaDevice, or Macronix. These brands tend to offer better reliability and compatibility with the ESP32’s SPI flash interface. Avoiding cheap no-name flash chips has saved me from unexpected failures and firmware corruption.
Speed and Performance (SPI Flash Speed)
The Flash IC’s speed, often indicated by its SPI clock rate (e.g., 40 MHz, 80 MHz), impacts how fast the ESP32 can read from and write to the flash memory. For my projects where speed matters—like audio streaming or real-time sensor data processing—I look for boards with flash chips supporting higher SPI speeds. This ensures faster boot times and smoother operation.
Compatibility with ESP32 Wroom 32E
Although many Flash ICs work well with the ESP32, I always double-check that the flash chip is fully compatible with the Wroom 32E module specifications. This prevents issues like failed flashing, unstable operation, or boot loops. The ESP32 datasheet and community forums are great resources I use to verify compatibility.
Packaging and Physical Form Factor
If I’m designing my own PCB or replacing the Flash IC, I pay attention to the packaging type (e.g., SOP8, WSON). The ESP32 Wroom 32E typically uses an 8-pin SOP package for the Flash IC, so I make sure to get the correct form factor to fit the module or board layout.
Price vs. Value
While it’s tempting to go for the cheapest Flash IC, I’ve found that investing a bit more in quality chips pays off in stability and longevity. Sometimes a slightly higher price means better endurance, less risk of data corruption, and overall better experience. I always balance cost with reliability.
Where to Buy
I usually source my ESP32 Wroom 32E boards and Flash ICs from trusted electronics suppliers like Digi-Key, Mouser, or reputable online platforms like Amazon or AliExpress (with good reviews). This helps me avoid counterfeit or substandard chips.
Final Thoughts
Buying the right Flash IC for the ESP32 Wroom 32E board is crucial for a hassle-free development experience. By paying attention to memory size, brand, speed, compatibility, and packaging, I ensure my projects run smoothly. Hopefully, my insights help you make an informed choice when selecting your next ESP32 Wroom 32E Flash IC!
Author Profile
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Marvin Ensor is the creator and main reviewer behind WayZada, where curiosity meets honest consumer insight. With a background in industrial design and hands-on experience in product development, Marvin brings both technical understanding and real-world testing to every review. Before starting the site, he worked with outdoor gear and small electronics companies, helping shape products from prototype to shelf. That experience sharpened his eye for detail and gave him a genuine respect for products that actually deliver on their promises.
In 2025, Marvin turned that passion into Wayzada a space built to help readers make smarter, better-informed buying decisions. Living just outside a mid-sized U.S. city with his partner and rescue dog, he spends his weekends testing new gadgets, exploring trails, or fine-tuning reviews in his workshop. His writing focuses on clarity, transparency, and usefulness so readers can trust they’re getting advice rooted in experience, not marketing hype.
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