Seeed Studio XIAO ESP32 S3 Sense - 2.4GHz Wi-Fi, BLE 5.0, OV2640 Camera Sensor, Digital Microphone, 8MB PSRAM, 8MB Flash, Battery Charge Supported, Rich Interface, IoT, Embedded ML …

The Seeed Studio XIAO ESP32 S3 Sense is an excellent compact board packed with features. Built-in Wi-Fi and BLE 5.0 make connectivity seamless, and the OV2640 camera plus digital microphone open up lots of possibilities for vision and audio-based projects. Having both 8MB PSRAM and 8MB Flash is a huge advantage for running more complex applications, including embedded ML. I really like the small form factor—it’s easy to integrate into IoT projects—and the fact that it supports battery charging makes it super practical for portable solutions. The interfaces are rich and well-documented, so getting started was smooth. Overall, this is a very capable and affordable development board for IoT, AI, and edge ML experiments. Highly recommended for makers, hobbyists, and developers!

Great little boards and incredible value for the money. Perfect for ESPHome. Dead bug it or solder onto a protoboard with the castellated pads. I didn’t realize it had a built-in battery circuit, have not messed around with that but I intend to try it out sometime. No temp wire makes me nervous though. Can’t get easier to program and flash than ESPHome builder- Claude code can just spit out the yaml you need and you’re up and running in seconds. Comes with little WiFi antennas but I actually found the reception isn’t too bad without it.

These were something of a chore to flash, but once you figure it out, they function great. they are really small and battery life is outstanding. i would certainly rebuy these.

This review is for the Esp32-c6. It’s a good chip and I’ve had success with it. I bought due to small size, WiFi, Bluetooth and optional external antenna. Accidentally thought wled would work. But it is NOT compatible with WLED. So I had to program it myself. While a fun leaning experience I didn’t plan on it. Also been having problems with PlatformIO and Espressiv compatibility. I’ll find a library that wants platformio v-latest but only works with Espressiv v3. It’s been a nightmare. Espressiv is nice just different and its own world. The ws2812b led library required old expressive so I had to look up old Bluetooth coding style - and docs are always about current versions A good chip with vendor support. But not well supported in the open source world. Limiting and increased blood pressure. 😇

I grabbed a standard ESP32C6 and unlike the module with the camera, it doesn't have any heat issues. It works beautifully, is very affordable, and includes a built-in ceramic antenna so you don't need to attach an external. It's fast, responsive, and powerful. Very easy to use. It connects to my wifi with no issue. Admittedly, I haven't tried Bluetooth, but I'd imagine it works just as well.

Works well for small projects like wearables

Well, strap on your boots and listen up, 'cause I gotta share my excitement about the Seeed Studio XIAO ESP32C3. This little gizmo ain't just a dime a dozen – it's a real lifesaver, especially for a busy parent like me. Here's why it's gettin' five stars: Now, why am I so excited about this gizmo, you ask? Well, I'll tell ya – I'm usin' it for a door alarm to keep an eye on my rambunctious 4-year-old son. He's a handful, that one, always tryin' to sneak out and explore the great outdoors. But with this XIAO thingamajig, I'll know the moment he even thinks 'bout openin' them doors. It's peace of mind wrapped up in a tiny package.! Small but Mighty: Don't let its size fool ya, this thing's a powerhouse. With Wi-Fi and BLE packed in tighter than a can of sardines, it's ready to tackle any job. Efficient as a Well-Oiled Machine: When it comes to power, this board's as thrifty as a farmer at the market. It barely sips electricity, like it's takin' a leisurely sip of sweet tea on a lazy summer afternoon. Keeps my door alarm runnin' smooth and steady without guzzlin' down the juice. More Connections Than a Family Reunion: Despite bein' pint-sized, this XIAO fella's got more ports than my granddaddy's fishing boat. Perfect for hookin' up all them sensors and gadgets to keep my little ones safe. Charge Like a Tesla at a Supercharger: Picture this – it charges up faster than a Tesla at a supercharger station! Just plug 'er in and she's ready to roll quicker than a herd of cattle stampedin' down the range. Smart as a Whip: And here's the kicker – it's got tiny machine learnin'! That's right, it's like havin' a little brain in my door alarm. Keeps me in the loop faster than a telegraph wire. Yessir, if you're fixin' to wrangle up some IoT contraptions, this Seeed Studio XIAO ESP32C3 is the real deal. Whether you're a city slicker or a country bumpkin, it'll get the job done and then some. So, grab yourself one of these babies and get to tinkerin' – you won't regret it!

I bought this development board to incorporate into a wireless project utilizing both BLE and ESP-NOW. After unpacking the board and attaching the antenna, I connected it to my computer and attempted to upload my BLE sketch that I tested on another ESP32C3 DevBoard. When this failed, I uploaded the example BLE sketch for the Xiao. The sketch successfully uploaded but the board became almost too hot to touch while running the program. Furthermore, it did not show up when I scanned for it with my phone using the nRF Connect app. I then tried debugging. The example sketch was supposed to change the device name when D0 was pulled to ground by a button press. I attempted this to no avail. First I checked the Serial connection by uploading a Hello World sketch. That ran successfully. I then modified that code to print when the button pin was pulled to ground. It didn’t work. Connecting my multimeter to the button pin was floating at ~100mV even though INPUT_PULLUP was declared in the pinMode(). I repeated this for pins 1-3 and it failed everytime. That is where I gave up and tried to replace it. All Amazon offered was a return. I hope to try it again in the future. SUMMARY: The Bluetooth didn’t work, even with code known to work on another ESP32C3. The device runs very hot. The GPIOs do not function as inputs and remain floating even when INPUT_PULLUP is called. I might have received a rare defective board. Now at ~$17 I’m not willing to pay double the price I originally paid to find out.