SainSmart Leonardo R3
Best starter kit for hobbyists building interactive microcontroller projects.
This all-in-one kit removes the friction of sourcing individual components, giving you an immediate, plug-and-play workspace for interactive projects. While the integrated shield setup sacrifices some compact portability, it gains immense value by streamlining your prototyping workflow into a single, cohesive unit.
$35.99
Who it's for
- Beginners seeking an all-in-one kit for immediate project building
- Makers interested in creating custom mouse or keyboard interface devices
- Students wanting to avoid complex wiring for rapid prototyping
Who should skip it
- Professionals requiring consistent, high-grade hardware reliability
- Developers who prefer a seamless, plug-and-play debugging experience
- Advanced hobbyists planning to connect numerous external sensors
Performance breakdown
Native USB Versatility
ATmega32u4 chip enables seamless keyboard and mouse emulation for custom projects.
Prototyping Efficiency
Included shield simplifies circuit construction without the need for messy breadboards.
User Interaction
Integrated LCD and keypad provide immediate feedback for standalone device interfaces.
Library Compatibility
Full Arduino IDE support ensures access to a vast ecosystem of code.
Power Flexibility
Multiple input options allow for easy transition from desk to field.
I/O Connectivity
Generous pin count handles complex sensor arrays and peripheral expansion with ease.
Key Specs
Microcontroller Processor
ATmega32u4
Clock Speed
16 MHz
Operating Voltage
5V
Flash Memory
32 KB (4 KB used by bootloader)
SRAM
2.5 KB
Digital I/O Pins
20
PWM Channels
7
Analog Input Channels
12
Recommended Input Voltage
7-12V
Display
16x2 LCD with blue backlight
Know before you buy
Still have a question?
Ask Metto anything about the SainSmart Leonardo R3 before you decide.