ESP32 Development Board ESP-32S ESP-WROOM-32 mit 0.96 inch OLED Display 2.4GHz Dual-Mode Development Board Dual Cores Microcontroller 30 Pin Low Power Compatible with AR duino IDE Micro

This is essentially a standard ESP-WROOM-32 dev board with an 0.96" OLED glued onto it. Out of the box, it boots up with a neat demo program that shows off the display capabilities, which is nice for a quick verification. I used it to build a temperature logger (using a thermocouple), and electrically, it worked fine. However, there are two reasons I'm giving it 3 stars: Mechanical Quality: The OLED display on my unit was not attached squarely. It's noticeably crooked. For a breadboard project, this doesn't matter, but if you plan to mount this inside a 3D-printed case or behind a panel, the misalignment will be a headache. Confusing Pinout: The pins are not clearly marked with standard GPIO numbers. For example, if you need GPIO 17, you have to know that it is labeled "TX2" on the board. The silkscreen uses function names rather than the actual GPIO numbers required for coding, which makes setup tricky if you don't have the schematic handy. Verdict: It works for the price, but be prepared to check pinout diagrams online and don't expect the screen to be perfectly straight.