Description:

The Beetle CM-32U4 emerges as a remarkably compact yet potent micro Leonardo controller, engineered to empower space-constrained and enduring Arduino projects. Building upon the legacy of the DFRobot Beetle Board, this upgraded iteration showcases significant enhancements in both integration and user-friendliness.

Despite its remarkably diminutive footprint of just 22mm x 20.5mm, the Beetle CM-32U4 doesn’t compromise on essential connectivity. It thoughtfully provides pin connectors for a comprehensive array of communication interfaces, including a dedicated I2C, SPI, and UART, alongside two analog inputs, two digital I/O, two ground connections, and a 5V output. This pin connector design offers a more intuitive and accessible alternative to the solder pads found on its predecessor.

Leveraging the official Leonardo firmware, the Beetle CM-32U4 seamlessly integrates with the Arduino IDE, eliminating the need for supplementary downloads and streamlining the development process.

A standout feature of the Beetle CM-32U4 is its integrated lithium battery charging management system. This innovative inclusion simplifies project construction by allowing direct battery connection via dedicated pins, contributing to a more compact and inherently safer design.

Furthermore, this versatile controller offers a trio of power supply options to accommodate diverse project needs: convenient USB power, dedicated battery pack power via the BAT pin, and an external 5V supply through the VIN pin. This flexibility renders the Beetle CM-32U4 exceptionally well-suited for a wide spectrum of applications, from intricate DIY creations and engaging workshop activities to personalized gift projects, innovative E-Textiles wearables, and valuable educational tools. The combination of rechargeable capability and multiple power sources effectively provides a degree of “uninterrupted power supply (UPS)” functionality, enhancing the reliability of your projects.

Specifications:

• Operating Voltage: 5V DC
• Maximum Charging Current: 600mA
• Minimum Charging Current: 200mA
• Operating Temperature Range: -40125
• Interface: I2C x 1,SPI x 1,UART x 1,Analog x 2,Digital x 2
• Dimension: 22 x 20.5mm/0.87 x 0.81

Features:

• Despite its miniature form factor, it boasts a rich set of communication interfaces including I2C, SPI, UART, analog inputs, and digital I/O.
• Its remarkably small size (22mm x 20.5mm) makes it ideal for space-constrained projects.
• Optimized integration and usability contribute to a significantly extended operational lifespan.
• Onboard charging chip simplifies power management for long-lasting, portable applications.
• Supports USB, battery pack, and external 5V power, offering flexible deployment.
• Directly programmable via the Arduino IDE without extra setup.

Applications:

• DIY projects
• Workshops
• Gift projects
• E-Textiles wearable

Projects:

Project 1: Ionizing Radiation Detector

Project 2: Make a TINY Arduino Drone with FPV Camera – Will It Fly?

Documents:

• Product wiki
• Schematic
• ATmega32U4 Datasheet

Package Included:

1 x DFRobot Beetle CM-32U4 Compatible With Arduino Leonardo – ATmega32U4