ESP32-C3 Mini

The ESP32-C3 Zero is a compact and low-power microcontroller board based on a 32-bit RISC-V processor, running up to 160 MHz and equipped with integrated Wi-Fi and Bluetooth connectivity.

It provides a reliable and flexible platform for embedded applications requiring communication, sensor acquisition and distributed control.

Key Features
– ESP32-C3 single-core RISC-V processor (up to 160 MHz)
– 4 MB onboard Flash memory
– Integrated Wi-Fi (2.4 GHz) and Bluetooth Low Energy
– Multiple interfaces: UART, I2C, SPI, ADC
– Up to 15 configurable GPIOs
– USB-C interface for programming and power
– Compact form factor suitable for embedded integration

Use in the N.E.R.D. System
Within the N.E.R.D. architecture, the ESP32-C3 is used as a remote I/O module.

It is responsible for:
– Reading analog sensors (pressure, TDS)
– Processing flow sensor pulse signals
– Controlling outputs via RS485 relay modules
– Communicating with the main ESP32-S3 controller over Modbus RTU

This distributed approach reduces wiring complexity and improves system scalability and reliability.
The ESP32-C3 is selected for its compact size, low power consumption and sufficient processing capability for real-time I/O handling.
By separating I/O tasks from the main controller, the system remains responsive and easier to expand.

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