The Arduino microcontroller that most closely resembles the ESP32 in terms of functionality and pin configuration is the Arduino Due. Here are some key similarities and differences:
Similarities:
Processing Power:
- ESP32: Dual-core Tensilica LX6 microprocessor.
- Arduino Due: 32-bit ARM Cortex-M3 processor.
Operating Voltage:
- Both the ESP32 and Arduino Due operate at 3.3V logic level.
Digital I/O Pins:
- ESP32: Has up to 36 GPIO pins.
- Arduino Due: Has 54 digital I/O pins.
Analog Inputs:
- ESP32: Has 18 ADC channels with 12-bit resolution.
- Arduino Due: Has 12 analog input pins with 12-bit resolution.
PWM Outputs:
- Both the ESP32 and Arduino Due have multiple PWM outputs.
Communication Interfaces:
- Both support multiple communication interfaces including UART, SPI, I2C, and CAN.
Differences:
Bluetooth and Wi-Fi:
- ESP32: Includes both Bluetooth and Wi-Fi capabilities.
- Arduino Due: Does not have built-in Bluetooth or Wi-Fi; external modules are needed for wireless communication.
Flash Memory:
- ESP32: Typically comes with 4MB of flash memory.
- Arduino Due: Has 512 KB of flash memory.
RAM:
- ESP32: Includes 520 KB of SRAM.
- Arduino Due: Has 96 KB of SRAM.
Additional Features:
- ESP32: Offers additional features such as capacitive touch sensors, Hall effect sensor, and a temperature sensor.
- Arduino Due: Primarily a microcontroller without these integrated sensors.
Summary:
While both the ESP32 and Arduino Due offer advanced processing capabilities, multiple I/O options, and extensive communication interfaces, the ESP32 stands out with its built-in wireless capabilities and additional integrated sensors. The Arduino Due, on the other hand, provides a robust 32-bit platform with a large number of I/O pins and extensive compatibility with Arduino shields and libraries.
If you need wireless capabilities (Wi-Fi and Bluetooth) and integrated sensors, the ESP32 is the better choice. For projects requiring a large number of I/O pins and a 32-bit processing power without built-in wireless communication, the Arduino Due is a suitable alternative.
