Beetle ESP32-C3, powered by the 32-bit RISC-V single-core processor, is a compact and cost-effective microcontroller specifically designed for IoT applications. With full support for WiFi and Bluetooth 5 (LE), it's ideal for embedded smart devices, wearable tech, and wireless sensor projects.
Key Highlights
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Ultra-compact size: only 25 × 20.5 mm
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RISC-V 32-bit architecture: efficient and powerful processing
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13 broken-out I/O ports, ideal for sensor-rich or interface-heavy applications
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Dual-mode wireless communication: WiFi + Bluetooth 5 (BLE + Mesh)
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USB Type-C support and integrated battery charging management
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Compatible with Arduino IDE, ESP-IDF, MicroPython, and C/Python
Specifications
Power & Size
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Operating Voltage: 3.3V
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Type-C Input Voltage: 5V DC
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VIN Input Voltage: 5V DC
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Operating Current: 25mA
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Maximum Charging Current: 400mA
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Dimensions: 25 × 20.5 mm / 0.98 × 0.81"
Hardware
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Processor: 32-bit RISC-V single-core
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Clock Speed: 160 MHz
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SRAM: 400 KB
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ROM: 384 KB
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Flash: 4MB
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RTC SRAM: 8 KB
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USB: USB 2.0 (up to 12 Mbit/s)
Wireless Connectivity
WiFi
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Protocol: IEEE 802.11 b/g/n
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Modes: Station, SoftAP, SoftAP+Station, Promiscuous
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Bandwidth: 20 MHz / 40 MHz
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Frequency: 2.4 GHz
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Aggregation: A-MPDU / A-MSDU
Bluetooth
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Protocol: Bluetooth 5, Bluetooth Mesh
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Data Rates: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps
Ports & Interfaces
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Digital I/O: 13
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UART: 2
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SPI: 1
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I2C: 1
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I2S: 1
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ADC: 2 × 12-bit SAR ADCs, up to 6 channels
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IR transceiver: 2 transmit, 2 receive (random pins)
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PWM: 6 channels
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DMA: 3 transmit, 3 receive channels
Safety Features
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Onboard lithium battery charging management enables safe and efficient battery integration without extra modules
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Version 2.0.0 adds BOOT (IO9) and RST buttons for easier programming and system resets
Application Scenarios
Beetle ESP32-C3 is ideal for:
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Smart wearables such as smartwatches and smart glasses
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Health monitoring with mobile integration
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Smart homes, IoT automation, and educational IoT kits
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Indoor positioning and smart farming systems
Shipping List
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Beetle ESP32-C3 ×1
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Beetle ESP32-C3 Expansion Board ×1
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2.54-8P Single-row Pin Header ×1