Today’s tutorial will not only provide a comparison between these boards, but it will also show you how to put the ESP32 board to use. The table below provides a more detailed comparison between the two modules. While both boards are quite cheap, the ESP32 ($6 – $12) costs slightly more than the ESP-12e ($3-$6). The board also comes with touch-sensitive pins, alongside a built-in hall effect and temperature sensors. Among several features, the ESP32 packs a CPU core, a faster Wi-Fi, more GPIOs (especially increased analog pins that we all desired), supports Bluetooth 4.2 and Bluetooth low energy. The ESP32 is way advanced compared to the ESP-12e. This improvement came in the form of the ESP32. However, the ESP8266 equally had its own limitations and like every good product, there was a need to improve it. The NodeMCU solved all these issues adding additional features and it immediately became a darling of the maker community. The ESP-01 modules were not breadboard compatible, had power issues, and could barely be used in a standalone application where more than two GPIOs are required. As mentioned in previous tutorials, ESP-12e module popularly referred as the nodeMCU came at a time where makers were struggling with the difficulties around the use of the ESP-01 modules.
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