Teyleten Robot ESP32S ESP32 Development Board 2.4GHz Dual-Core WiFi +Bluetooth 2 Function Microcontroller for Arduino (ESP32 38P, 3PCS)

So far, I have no complains. It is a solid construction, well packed, run as well as other ESP32 I use and the code is no problem. Happy with it!

All 3 MCU's showed up in excelent condition. After installing the silicon labs update, all 3 MCU's were detectable on my PC. After selecting the ESP32 Dev Module and the proper com port in the Arduino IDE, all 3 MCU's were able to have sketches uploaded to them. Mine did not require the boot button to be pressed during uploading. I have tested both WiFi and BLE, both work without any issues. With the proper libraries OAT updates work reliably. The only cons to these boards is that they are not very (standard) bread board friendly, due to their width. It would be nice if the board could be narrowed up by one pin, so both side of the board can be accessed. Custom bread board can be used to access both sides. But, usually i side of the board is sufficient. More memory and usb-c would be great too. The cons are very small issues. These boards are an excelent value and I give these MCU's 5 stars. I would definatly buy these again.

I recently purchased a set of three ESP32 WROOM-32 modules, and I must say, I am thoroughly impressed with their performance and capabilities. These modules are a game-changer for anyone involved in IoT projects, offering a wide array of features and impressive specifications.Let's dive into some of the key specs of the ESP32 WROOM-32:- Dual-core Xtensa 32-bit LX6 microprocessor, running at up to 240 MHz- 520 KB of SRAM and 448 KB of ROM- 4 MB of flash memory for storing code and data- 802.11 b/g/n WiFi and Bluetooth 4.2 (BLE) connectivity- 34 GPIO pins, supporting various interfaces like SPI, I2C, UART, and more- 12-bit ADC and 8-bit DAC for analog signal processing- Cryptographic hardware acceleration for secure communicationThese specifications make the ESP32 WROOM-32 a powerhouse in the world of IoT. The dual-core processor enables efficient multitasking and high-speed execution, while the ample memory allows for complex applications and data storage. The built-in WiFi and Bluetooth connectivity make it easy to integrate these modules into wireless networks and communicate with other devices seamlessly.Upon receiving the modules, I ran a comprehensive health check on each one, testing various aspects such as chip information, memory, flash memory, WiFi connectivity, and internet connectivity. I'm thrilled to report that all three modules passed the tests with outstanding results, demonstrating their reliability and performance.Setting up the ESP32 WROOM-32 modules with the Arduino IDE is a breeze, even for beginners. Simply follow these steps:1. Install the Arduino IDE on your computer.2. Add the ESP32 board package URL to the Arduino IDE preferences.3. Install the ESP32 board package through the Boards Manager.4. Select the "NodeMCU-32S" board from the "Tools" menu.5. Connect your ESP32 module to your computer via USB.6. Select the appropriate port from the "Tools" menu.7. Start programming and uploading your sketches to the ESP32 module.With its impressive specifications and ease of use, the ESP32 WROOM-32 opens up a world of possibilities for IoT projects. Whether you're building smart home devices, wearable sensors, industrial control systems, or anything in between, these modules provide the necessary computing power, connectivity, and flexibility to bring your ideas to fruition.In conclusion, I wholeheartedly recommend the ESP32 WROOM-32 modules to anyone embarking on IoT projects. Their powerful specs, reliable performance, and compatibility with the Arduino IDE make them an excellent choice for both beginners and experienced developers. These modules are a must-have for anyone serious about IoT development.

Works awesome but on one of the three boards I got the micro USB port is kind of defective. The USB plug doesn't stay plugged in very tight. It makes enough contact though to connect to the board.

Works as expected. Im using mine for a temperature sensor for my wood stove i attached a screen shot of the spi pinout to try and save others from lots of googling

Good boards for little money. what I learned the hard way when testing code is that the boards REQUIRE 5V on VIN, not 3.3v minimum as suggested the the website description.

Good bang for the buck. I'm using these as remote temperature sensors via ESPHome and so far, so good. You don't get any documentation with these but if you've worked with any of the other ESP32 devices like the WROVER, you'll feel right at home ('cept for this one has 30 pins - you can buy them with 38 pins, I wanted the smaller form factor). Working on making them battery powered so I don't have to keep them plugged in - I'll update this review if i run into any issues there but I don't expect any. Arduino IDE or Thonny, seems to work just fine.Pic is a test of a cheapo sensor, going to use better ones that will require some soldering, final version gets soldered to a PCB board then 3D print an enclosure for it all and test with and without a battery.

Using these for wled and they perform great!