SainSmart Leonardo R3
Best affordable microcontroller for hobbyists building custom computer input devices
A comprehensive entry-level kit designed to teach the fundamentals of physical computing. It bundles a versatile development board with a wide array of sensors and components, providing everything needed to build interactive projects right out of the box.
$35.99
Who it's for
- Makers building custom human interface devices or gaming peripherals.
- Budget-conscious hobbyists looking for reliable performance without the premium cost.
- Students and educators requiring a straightforward, reliable development environment.
Who should skip it
- Users with a large collection of legacy Arduino Uno shields.
- Developers who frequently rely on constant, uninterrupted serial debugging sessions.
- Perfectionists who prioritize premium aesthetic finish and high-end component sourcing.
Performance breakdown
Prototyping Versatility
High pin count and analog inputs handle complex sensor arrays easily.
Ease of Setup
I2C display integration drastically reduces wiring complexity for beginners.
Processing Overhead
Standard 16MHz clock speed is sufficient for most hobbyist automation tasks.
Component Compatibility
Standard ATmega32u4 architecture ensures broad support for existing code libraries.
Resource Efficiency
Smart I2C implementation preserves valuable I/O pins for additional peripherals.
Starter Kit Value
Includes essential components to start building projects immediately out of box.
Key Specs
Microcontroller Processor
ATmega32u4
Connectivity Protocols
I2C, SPI, UART
USB Interface Type
Micro USB
Operating Voltage
5V
RAM Capacity
0.0025 MB
Flash Memory Capacity
0.032 MB
GPIO Pin Count
20
Clock Speed
16 MHz
Form Factor
Arduino Uno R3
Programming Environment Support
Arduino IDE
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