SainSmart Leonardo R3
Best reliable microcontroller for budget conscious electronics hobbyists.
This starter kit simplifies prototyping by pairing a versatile microcontroller with a convenient I2C-enabled display. It removes the complexity of wiring multiple components, making it an ideal entry point for those looking to build interactive projects quickly.
$23.99
Who it's for
- Makers building custom human interface devices and game controllers
- Intermediate hobbyists requiring more connectivity for sophisticated robotics
- Budget-conscious developers seeking dependable hardware for prototyping
Who should skip it
- Beginners who may find non-persistent serial connections confusing
- Users with a large collection of older Arduino-specific shields
- Engineers requiring near-instantaneous startup times for time-sensitive applications
Performance breakdown
Native USB Connectivity
Direct USB support simplifies programming and eliminates external serial converter headaches.
I/O Efficiency
I2C display integration frees up critical pins for complex sensor arrays.
Beginner Accessibility
Comprehensive kit components allow for immediate, frustration-free prototyping right out of the box.
Development Compatibility
Seamless integration with standard Arduino environments ensures a smooth, familiar workflow.
Processing Capability
The ATmega32u4 handles standard hobbyist projects well but hits limits under heavy loads.
Hardware Versatility
Generous analog and PWM pin counts offer flexibility for diverse project designs.
Key Specs
Microcontroller
ATmega32u4
Board Type
Microcontroller
Development Board Series
Arduino Leonardo
Operating Voltage
5V
Clock Speed
16 MHz
RAM Capacity
0.0025 MB
Flash Memory Capacity
0.032 MB
Digital I/O Pins
20
Analog Input Count
12
Connectivity Protocols
I2C, USB
Know before you buy
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