Beetle ESP32 - C3 (RISC-V Core Development Board)

Introduction

Beetle ESP32-C3, mainly intended for IoT applications, is a controller based on ESP32-C3 RISC-V 32bit single-core processor.

On a coin-size board of 25*20.5 mm, there are up to 13 IO ports broken out, so you don't have to worry about running out of IO ports when making projects. Meanwhile, the li-ion battery charging management function is integrated on the board which allows for directly connecting the li-ion battery without extra modules, while ensuring the application size and safety.

The equipped expansion board for Beetle ESP32-C3 brings out more power sources without increasing product volume, more convenient for solder. Besides, the onboard easy-to-connect GDI saves the trouble of wiring when using a screen.

Beetle ESP32-C3 supports WiFi and Bluetooth 5 (LE) dual-mode communication that reduces the difficulty of networking, and also both Bluetooth Mesh protocol and Espressif WiFi Mesh are supported for more stable communication and a larger coverage area.

Beetle ESP32-C3 can be programmed by Arduino IDE, ESP-IDF, MicroPython, C, and Python are both supported.

Pin Diagram

Features

• Small size of 25*20.5 mm
• Onboard Lithium charging management function, safer charging and discharging
• Comes with expansion board, more convenient to make projects or use with a screen
• RISC-V 32bit core
• Support WiFi and Bluetooth 5(LE) dual-mode communication

Application

• IoT System

Specifications

Basic Parameter

• Operating Voltage: 3.3V
• Type-C Input Voltage: 5V DC
• VIN Input Voltage: 5V DC
• Operating Current: 25mA
• Maximum Charging Current: 400mA
• Operating Temperature: -40~105^oC
• Size: 25 x 20.5mm/0.98 x0.81"

Hardware Parameter

• Processor: 32bit RISC-V Single-core processor
• Main Frequency: 160 MHz
• SRAM: 400KB
• ROM: 384KB
• Flash: 4MB
• RTC SRAM: 8KB
• Clock: external crystal(32kHz); internal fast RC oscillator 17.5MHz(adjustable); PLL clock
• USB: USB 2.0 Up to 12Mbit/s

WiFi

• WiFi Protocol: IEEE 802.11b/g/n
• Bandwidth: Supports 20 MHz, 40 MHz bandwidth in 2.4GHz band
• WiFi Mode: Station, SoftAP, SoftAP+Station and promiscuous mode
• WiFi Frequency: 2.4GHz
• Frame Aggregation: TX/RX A-MPDU, TX/RX A-MSDU

Bluetooth

• Bluetooth Protocol: Bluetooth 5, Bluetooth mesh
• Bluetooth Frequency: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps

Ports

• Digital I/O x13
• LED PWM 6 Channel
• SPI x1
• UART x2
• I2C x1
• I2S x1
• IR Transceiver: transmit channel x2, receive channel x2(random pin)
• 2 × 12-bit SAR ADCs, up to 6 channels
• DMA controller, with 3 transmit channels and 3 receive channels

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