ESP-WROOM-32 ESP32 ESP-32S Development Board 2.4GHz Dual-Mode WiFi + Bluetooth Dual Cores Microcontroller Processor Integrated with Antenna RF AMP Filter AP STA Compatible with Arduino IDE (3PCS)

Great ESP32 device and though there's no documentation. Anyone who know what these are don't need any instructions. Was able to flash a custom firmware to use on a small build and everything works. All 3 module accepted the flash with no issues and was very easy to use and flash. So far it's working and I'm able to stream my audio from the phone to another Bluetooth device. Great little module for the money and there are endless features you can do with these ESP32 modules.

I used these for ESPHOME bluetooth proxy to extend a weak bluetooth signal. At first I thought there was an issue with these boards because they would lose signal every so often. After further testing I realized that the micro usb cable powering the chip would lose voltage when the wifi would increase power. I switched from a cable that was a foot to a cable that was 6 inches and all the problems disappeared. I hope this helps other people with similar issues.

I bought this ESP32 for a digital seismograph I'm working on. The functionality of this thing is amazing. I was able to hook it up to my ADC without any problems, alongside a micro SD card reader. Not only that but I was able to run a local webserver in which I could see my graph. It's pretty fast too, I haven't had any delays with processing data at all. It's small size and very little required power source makes this great too. It's versatility will allow you to pretty much use any type of electrical component with it, and I have not runed into any compatibility issues so far with any of my parts. Only thing I would consider a con would be that you'll have to learn C++ in order to program it. Overall, I would recommend this board for any type of low power project you may need.

I was investigating how to enable bluetooth with my Homeassistant installation and found documentation on creating a bluetooth proxy. This item was linked directly on the ESPHome website, which also includes a web-based firmware flasher. Encouraged by how easy this could be, I made the purchase. The competing option was a M5Stack Atom Lite, which looked quite promising as it comes within a case already. After weighing the shipping times, I went with this product. The two are essentially the same price if you factor in a separate case for the ESP-WROOM-32. Sifting through the reviews here, I found that manually installing drivers for the board would be required. If you just plug in the device, Win10 shows a popup but it does not actually install the needed drivers. You will need the easy to google CP210x USB to UART Bridge VCP Drivers, CP210x_Universal_Windows_Driver.zip available from Silicon Labs. After that, the web app flasher was easy to run. It wrote the FW needed and then lets you specify your wifi network. I had read many reviews that were disappointed with horrible wifi range. I am 1 floor below my router and it shows -71dB signal. Not great, but still functional. Maybe that's not bad considering there's no antennae. Other wifi devices in the same room were about -65-70dB. Immediately after connecting to wifi, Homeassistant recognized the device and it was easy to add it as an ESPHome device. It easily found the 3 bluetooth thermometers I wanted to connect (Thermopro TP357). I haven't had any notable dropouts for this first week but will continue to monitor. As the last step I am purchasing a case for the board. There are some generic plastic boxes available on Amazon, but I decided to go with Etsy for a custom 3D printed one.

These were the first ESP32s I ever bought, so I didn't really know what I was looking at or for, but they ended up working very well. As I learned more, I realized there are many different types, and it was hard to know what type this was. As someone else mentioned, I ended up using esptool command line tool. Here is what I got in hopes it makes someone's else's journey a little easier. Based on documentation, best I can tell this is the original ESP32 Series, not the S series. Here is what esptool tells me about mine: Chip type: ESP32-D0WD-V3 (revision v3.1) Features: Wi-Fi, BT, Dual Core + LP Core, 240MHz, Vref calibration in eFuse, Coding Scheme None Crystal frequency: 40MHz That confusion aside, they worked great for what I needed, they came package well, with Styrofoam pads protecting the pins and all 3 were in working order. Deducted 1 star for the confusion around knowing exactly what you are getting.

Let me tell you about this **AItrip 1PCS Type, C ESP32 ESP, WROOM, 32 Development Board, it's honestly amazing. I’ve become quite the tech enthusiast lately, and this little device has seriously made my projects so much easier and more enjoyable. What I love the most is the WiFi and Bluetooth capability, which means I can set up various projects without any hassle. The dual, core microcontroller really enhances the performance, making it perfect for everything from simple tasks to more complex applications. The best part is that it’s durable enough to handle the usual wear and tear in our busy household, which is always a plus for me. At the end of the day, I'm really happy with this **AItrip 1PCS Type, C ESP32 ESP, WROOM, 32 Development Board.

Two of the three I ordered no longer connect to WiFi after a month. They drop the connection even when right next to my router. Happens intermittently for a few minutes, then drops off the network entirely unless rebooted. After several power cycles, I’m lucky to get them reconnected for a minute or two. One even stopped connecting via serial port to my computer. I have several others from other manufacturers being used in the same fashion, and I’m only having issues with this bunch. It’s a minor financial loss, but I’ve spent hours prototyping devices and projects that I eventually soldered before installing them, and now I’ve spent many more hours troubleshooting only to realize that it’s not me, it’s the hardware. Consider purchasing from another seller and manufacturer, even if they cost a few dollars more. Thankfully I should be able to desolder and swap in some more reliable boards.

Like another reviewer mentioned, only 2 out of 3 could be programmed. The third one just says "A fatal error occurred: Failed to connect to Espressif device: Wrong boot mode detected (0x3)! The chip needs to be in download mode." from esptool no matter what I do. I tried via USB as well as via pins with a serial programmer. It just won't work.

Really useful microcontroller

I had a few old Chinese addresses able rgb strips that just had a very basically controller and crappy power supplies. Install WLED on this board and now all the strips are smart light strips and they perform better than some of the other branded RGB led strips.

Am able to connect sensors and host a server on it!

Ok

Ok