Description

ESP32 is far superior to Arduino UNO. That means it has all the features you need to create your IoT & non-IoT projects, ESP32 can perform a complete standalone system or as a slave device to a host MCU, reducing communication stack overhead on the main application processor. ESP32 can interface with other systems to provide Wi-Fi and Bluetooth functionality through its SPI / SDIO or I2C / UART interfaces

ESP32 is the name of the chip that was developed by Espressif Systems. This provides Wi-Fi (and in some models) dual-mode Bluetooth connectivity to embedded devices. While ESP32 is technically just the chip, modules, and development boards that contain this chip are often also referred to as ESP32 by the manufacturer

ESP32-WROOM-32UE is a powerful, generic Wi-Fi + Bluetooth + Bluetooth LE MCU module that targets a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming, and MP3 decoding.
ESP32-WROOM-32E is different from ESP32-WROOM-32UE in that ESP32-WROOM-32UE has integrated a connector to connect an external antenna