DFRobot
Beetle CM-32U4 - Compatible with Arduino Leonardo - ATmega32U4
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Beetle CM-32U4 is a micro Leonardo controller with an onboard charging chip. As an upgraded version of the DFRobot Beetle Board, this board is greatly o...
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Beetle CM-32U4 is a micro Leonardo controller with an onboard charging chip.
As an upgraded version of the DFRobot Beetle Board, this board is greatly optimized in integration and usability, which makes it well applicable to Arduino projects that require compact size and long service life.
Just like the Beetle series, despite a mini body, it has powerful functionalities. On a size of only 22mm*20.5mm, Beetle CM-32U includes most commonly-used communication interfaces: 1×I2C, 1×SPI, 1×UART, 2×analog Interface, 2×digital interface, 2×GND reserved and 1×5V output, which are all designed as pin connector form, more intuitive and easy to use compared with the onboard pads of Beetle. Besides, Beetle CM-32U4 supports official Leonardo firmware, which means you can directly use it in Arduino IDE without extra download.
It integrates the charging management function for Lithium battery. You can easily connect the battery to the board via pins, which could reduce project building difficulty, meanwhile, much smaller and safer.
There are 3 power supply methods: USB power supply; Battery pack power supply on the BAT pin; 5V external power supply on the VIN pin, making this board more widely applicable to DIY projects, workshops, gift projects, E-Textiles wearable, and educational. And the features of rechargeable and diverse power supplies, to some extent, are equivalent to "uninterrupted power supply (UPS)".
Board Overview
Features
Rich functions
Small size
Greatly increase the service life
Applications
DIY projects
Workshops
Gift projects
E-Textiles wearable
Specification
Operating Voltage: 5V DC
Maximum Charging Current: 600mA
Minimum Charging Current: 200mA
Operating Temperature Range: -40~125°C
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”
Documents
Shipping List
Beetle CM-32U4 x1
8pin-2.54mm Pin Header x2
Jargon buster
Plain-language definitions for the technical terms used above.
- e-textiles
- Electronic textiles are fabrics or clothing that include electrical parts such as conductive thread, sensors, LEDs, or small controllers. This matters because parts for e-textiles need to survive bending, sewing, and sometimes washing.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- IDE
- Short for Integrated Development Environment, a program used to write, run and manage code. It matters because some learners prefer a traditional coding workspace instead of a guided notebook-style lesson.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
- UPS
- An uninterruptible power supply is a battery-backed power system that keeps a device running when external power is unplugged or fails. For an embedded computer, it helps prevent sudden shutdowns that can corrupt files or interrupt a project.
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Supplier page — dfrobot.com
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Related Tutorials
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