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)

All three ESP32s worked and the price was very reasonable.

I picked these up to make a cheap COB LED strip smart. It only came with an RF remote which is not sustainable. They arrived without documentation, but that isn't a problem for me. My will is stronger than that. They arrived sealed in antistatic bags and looked new. The onboard USB port is a micro USB. I used it to flash WLED and setup wifi. I powered the board and the LED strip from the same power source because they used the same voltage. Then, I used a GPIO pin to communicate with the light strip. It was easier than I thought it was going to be. A heat sink is not recommend because the ESP chip does not produce much heat. They do not include a display. The quality is fine for my purposes. If you are just getting started with something like this, read the WLED site or ESPHome. Step 1. The website will flash the firmware for you.

Worked so well for a Bluetooth proxy in Home Assistant that I need to order more

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.

Exactly as ordered. Easy to program. A bit old, will go for a newer model when these are used up.

Fun and easy to implement in your electronics projects!

I bought five of these to make as bluetooth proxies for my Home Assistant Green. It was fairly trivial. Go to the ESPHome website. Install the appropriate driver for your system (CP210x Universal Windows Driver X64 for Windows 11 in my case), plug in the device to a USB C (assuming you got the USB C version). Flash it, add your wifi credentials and add it to your Home Assistant. Maybe 5 minutes for my first one. Then you can just distribute them all over the house. Obviously this little computer can do a lot of other things, but I can guarantee this works for this without any difficulty at all. I'll have to figure out some kind of case, and I am adding POE to USBC adapters to each so I can just stick them up by my switches in various rooms.

So im using these esp32 boards to run wled for led lights. I have successfully ran 900 leds with it using wifi and the wled app from my phone and connected two pir sensors to it. That being said, I fried one board which may have been my fault since I was running 12v to it instead of the 3.3-5v. I'm now running 5v to it with a step down converter, but earlier today board 2 stopped working after an update to the wled app. The light on the board illuminates but I can't reflash it. Opened up board 3 and flashed just fine and all is working again. These lights have only been in my experimental development stage before I apply lighting to my stairs. So I've lost two boards. The first one may have been my fault since the extra voltage made the board heat up but I thought it could handle just fine. Board 2 is still a mystery to me why it stopped working the way it did. I will look for a way to reset it. Glad I bought the 3 pack. I would do it again. Fun project to learn about. Update: 4/14/24 if you have trouble with the wifi try pushing the EN button on the board. Third board suddenly dropped wifi and after turning off back on, unplugging, etc over a few days, I finally pushed the en button and the wifi turned back on. Not sure what happened but that solved my issue. Been fine again for past 3-4 days. Thought I would report. I even went from USB to soldering power and that didn't help.

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

Great for my daughters uni project