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.
• Detailed tutorials for Beetle ESP32-C3 are provided for users to use the controller’s WiFi function, such as connecting to IoT platforms like Aliyun, IFTTT, etc. Or users can use various sensors and actuators from DFRobot to build up IoT systems.
• Beetle ESP32-C3 can be programmed by Arduino IDE, ESP-IDF, MicroPython, C, and Python are both supported.

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

Applications:

• 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℃
• 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

Projects:

• Project 1: ALIENS! Making Your Circuit Boards Into Multiuse Protoboards!

• Introduction: I like to make wearable technology and I don't want to be limited by the shape, size, and pins made on a board if I want to use it. The DFRobot ESP32-C3 boards are a great size: SMALL, but I want them to be wearable ready too!

• Project 2: Soldering Silicone Wire to a Microcontroller

• Introduction: This video is part of a tutorial on Instructables for making great prototyping boards.

• Project 3: Experiment: 1.51" transparent display with Firebeetle ESP32-E and Beetle ESP32-C3

• Introduction: In this experiment, I try out a 1.51″ transparent OLED display. To drive the display, I use a DFRobot Firebeetle ESP32-E and a DFRobot Beetle ESP32-C3 (not at the same time!).

• Project 4: DFROBOT Beetle C3 ESP32-C3 RISC-V (BLINK)

• Introduction: Blinking with DFROBOT Beetle ESP32 - C3, a RISC-V Core Development Board

Documentation:

• wiki
• Datasheets
• Hardware Schematics

Package Includes:

• 1 x Beetle ESP32-C3 
  
• 1 x Beetle ESP32-C3 Expansion Board 
• 1 x 2.54-8P Black Single-row Pin Connector