Everyone loves tiny microcontroller boards, and the ESP32-C3 Super Mini boards are no exception. However, if you try to buy a batch, you might end up disappointed. As pointed out by a video from Hacker University, some versions of the ESP32-C3 lack built-in Flash for storing programs.
The key point to note is that not all ESP32-C3 boards are created equal. The ESP32-C3 datasheet from Espressif clearly lists different versions. For example, the FN4 variant is already end-of-life, while the FH4AZ is not recommended for new designs. On the flip side, the FH4 and FH4X versions are the latest and preferable options. The letter “F” in these names indicates built-in Flash memory, so always look out for that.
Finding specific information about these boards online can be tricky. Sellers may not always provide the details you need, and identifying which version you have often requires looking closely at chip markings. This information is usually found on the third row of the chip. If you mistakenly get a board without Flash, you can connect an external Flash chip, but that’s likely not what you want.
Interestingly, the growing interest in microcontrollers is reflected in recent trends. A 2022 survey revealed that 45% of developers are now using microcontrollers in their projects, highlighting their importance in modern tech. This shift indicates that more people are exploring DIY electronics and IoT (Internet of Things) projects, making it crucial to understand what you’re buying.
So, whether you’re creating a smart gadget or exploring programming, knowing the differences among ESP32-C3 variants will help you make better choices. With so many projects relying on microcontrollers, having the right one can make all the difference in your work.
As always, buyer beware!
