3PCS ESP32 ESP32-DevKitC ESP32-WROOM-32U Development Board Kits, 38 Pin CP2012 Micro USB WiFi + Bluetooth Dual Cores Microprocessor Interface SPI I2C I2S Suitable for Arduino WiFi

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Another reviewer complained about the ad being misleading - USB-C vs. Micro-USB, and the need for an external antenna - perhaps the listing has been updated, but I saw nothing misleading about it - the photos clearly show a micro-usb connector, an antenna connector, and no on-board antenna (things pretty obvious if you've used a board with onboard wireless before). So while that reviewer is correct - the boards DO require an external antenna, and a micro-USB cable, they are exactly as advertised. At about $5 each, these are a good deal - that's a great price for a dual-core ESP32, or for any board of comparable features WITH onboard wifi/bluetooth. These are a great choice for hobbyists looking to upgrade from ATMEGA-based boards, like the Uno.

These are great development boards, but I don't like this model because, 1) It uses micro USB versus USBC, 2) I have to hold the boot button while powering up to program it (unlike the USB C version which just programs when I send it a new upload). This one does have a port for an external 2.4 GHz WiFi antenna which I do like in some applications where the USB C version that I reference just has a cheesy build in WiFi antenna.

This is defiantly one of those, if you know you know. These are a pretty standard ESP32 board. I had no issues programing and using them with WLED. One thing to note, as many have already stated, is that you need an external wifi antenna for any kind of range. I have a bunch of old laptops laying around, so I scavenged a few of them for antenna. Other than that, these are a great price for what seem to be good quality boards.

If you are a DIY or tech enthusiast, you are likely already familiar with the ESP32. These things are awesome, as there is literally no limit to the number of things you can do with them. They're easily programmable, and the Bluetooth/WiFi connectivity makes them perfect for lots of applications. Personally, I'm using these to make some smart sensors that can integrate into HomeAssistant, and at 3 for just over $5 a piece you can't go wrong.

These seems to work just fine, but I was disappointed to realize that it uses a micro-USB interface. From the images, I thought these had a USB-C interface, which would have been much more convenient. I would have preferred USB-C so I could use the same cables and adapters I already carry for my phone to interface and power these boards. While the kit performs well, the outdated micro-USB port is a bit of a letdown. If you don’t mind the older connection, it’s a solid kit, but USB-C would have made it much better.

These boards are great for small electronics projects especially doing quick sensors around your home and integrating them with things like Tuya. All in all, the headers were clean, the boards were readable and each one of them worked as described.

The board was easy to setup using ESPHome. It programmed sketches easily with the Arduino IDE. It is pretty hard to beat this price for some very adaptable boards. A great addition for your DIY home automation system. Would buy again.