The 7Semi ESP32-C3 Dev Board is a compact, breadboard-friendly development board engineered around the Espressif ESP32-C3FH4 chip—a 32-bit RISC-V single-core processor clocked at up to 160 MHz. With built-in 2.4 GHz Wi-Fi and Bluetooth 5 LE, this module provides an ideal balance of connectivity, power efficiency, and security.
The board integrates a USB Type-C port for power and programming, an onboard RGB status LED, and supports low-power operation modes, making it perfect for embedded wireless applications, sensor nodes, automation control, and rapid prototyping.
Key Features
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Processor: 32-bit RISC-V single-core @ up to 160 MHz
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Wireless:
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Wi-Fi: IEEE 802.11 b/g/n (2.4 GHz) up to 150 Mbps
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Bluetooth® 5 LE: with Mesh, 2 Mbps, coded PHY (125 Kbps, 500 Kbps)
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Memory:
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400 KB SRAM + 384 KB ROM
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4 MB onboard flash
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USB: Full-speed USB Type-C interface (power, programming, debugging)
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Onboard RGB LED: Controllable via PWM for status or custom indication
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Peripheral Interfaces:
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I2C, SPI, UART, I2S, RMT
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20+ GPIO pins, all clearly labeled
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Power:
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Powered via USB (5V)
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Onboard 3.3V regulator
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Security: Secure boot, flash encryption, digital signature, and hardware crypto (AES, SHA, RSA, HMAC)
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Low Power Modes: Modem-sleep, Light-sleep, Deep-sleep (5 µA typical)
Key Applications
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Wi-Fi-enabled IoT nodes and gateways
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BLE-based wearable and sensor devices
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Smart lighting, switches, and controls
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Industrial automation and telemetry
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Embedded prototyping with USB host/device
Package Includes
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1 × 7Semi ESP32-S3 Dev Board
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Optional headers (unsoldered)
Resources
- SoC:
- ESP32-C3FH4 (RISC-V, 32-bit Single-core @160 MHz)
- Wireless:
- Wi-Fi 2.4 GHz, Bluetooth 5.0 LE
- RAM / Flash:
- 400 KB SRAM, 4 MB SPI Flash
- USB Ports:
- 1 × USB-C (Power + Programming + Serial)
- Interfaces:
- I2C, SPI, UART, ADC, PWM, RMT, GPIO
- Operating Voltage:
- 3.3V logic (5V via USB input)
- RGB LED:
- WS2812-compatible onboard LED (multi-color)
- Power Modes:
- Active, Modem-sleep, Light-sleep, Deep-sleep
- Sleep Current:
- ~5 µA (deep-sleep mode typical)
- Board Size:
- Approx. 45 mm × 25 mm
- Board Weight:
- ~6 g
- Dev Environment:
- Arduino, ESP-IDF, PlatformIO