The Classic ESP32 Microcontroller Sets New Standards And Comes As WROOM and WROVER

The original (classic) ESP32 was launched in 2016 and called WROOM. A variant with extra PSRAM was called WROVER. There are dev boards with a built-in PCB antenna, and boards with an IPX connector to connect a real external antenna for more reach.


When you purchase ESP32 dev boards, look for the fine print in the type:

  • WROOM-32: First version of ESP32
  • WROOM-32D: Revised version of ESP32 with PCB antenna
  • WROOM-32E: Same as WROOM-32D but with an IPX antenna jack for connecting an external antenna
  • WROVER: Same as WROOM-32 but with additional 4/8 MB pSRAM
  • WROVER-B: Same as WROOM-32D but with additional 8MB pSRAM
  • WROVER-IB: Same as WROVER-B but with an IPX antenna jack instead of a built-in PCB antenna


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(content created Mar 23, 2024 - last updated May 16, 2024)