ROM: 448 KB (for booting and core functions).Processor: Tensilica Xtensa Dual-Core 32-bit LX6 microprocessor, running at 160 or 240 MHz.Bluetooth: BLE (Bluetooth Low Energy) and Bluetooth Classic.Wireless connectivity WiFi: 150.0 Mbps data rate with HT40.If you want to get a bit more technical and specific, you can take a look at the following detailed specifications of the ESP32 (source: )-for more details, check the datasheet): Compatible with MicroPython: you can program the ESP32 with MicroPython firmware, which is a re-implementation of Python 3 targeted for microcontrollers and embedded systems.Compatible with the Arduino “programming language”: those that are already familiar with programming the Arduino board, you’ll be happy to know that they can program the ESP32 in the Arduino style.Rich peripheral input/output interface-the ESP32 supports a wide variety of input (read data from the outside world) and output (to send commands/signals to the outside world) peripherals like capacitive touch, ADCs, DACs, UART, SPI, I2C, PWM, and much more.Dual-core: most ESP32 are dual-core- they come with 2 Xtensa 32-bit LX6 microprocessors: core 0 and core 1.Bluetooth: the ESP32 supports Bluetooth classic and Bluetooth Low Energy (BLE)-which is useful for a wide variety of IoT applications.Wi-Fi capabilities: the ESP32 can easily connect to a Wi-Fi network to connect to the internet (station mode), or create its own Wi-Fi wireless network ( access point mode) so other devices can connect to it-this is essential for IoT and Home Automation projects-you can have multiple devices communicating with each other using their Wi-Fi capabilities.Low-power: the ESP32 consumes very little power compared with other microcontrollers, and it supports low-power mode states like deep sleep to save power.Low-cost: you can get an ESP32 starting at $6, which makes it easily accessible to the general public.Why are they so popular? Mainly because of the following features:

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