SainSmart Leonardo R3
Best starter kit for electronics hobbyists learning microcontroller programming.
This SainSmart Leonardo R3 kit simplifies Arduino projects with its ATmega32u4 board and an integrated IIC LCD. It offers ample I/O for your creations and multiple power options for flexibility. While discontinued, it remains a great entry point for learning and prototyping.
$35.99
Who it's for
- Makers building custom keyboards, mice, or game controllers
- Prototypers wanting cleaner, faster circuit assembly
- Beginners needing a hassle-free, all-in-one starter kit
Who should skip it
- Users preferring simple, plug-and-play programming experiences
- Engineers requiring industrial-grade reliability for permanent installations
- Arduino Uno veterans avoiding code migration headaches
Performance breakdown
Beginner Accessibility
Plug-and-play setup makes learning electronics intuitive and frustration-free.
I/O Versatility
Abundant analog inputs and PWM outputs handle complex sensor arrays easily.
Display Integration
IIC interface saves precious pins while providing clear, immediate data feedback.
Power Flexibility
Multiple input options allow for seamless transitions between bench and field.
Software Compatibility
Full Arduino IDE support ensures a massive library of existing code.
Form Factor Utility
Standard Uno layout ensures compatibility with a vast ecosystem of shields.
Key Specs
Microcontroller Processor
ATmega32u4
USB Interface Type
Micro USB
Operating Voltage
5.0 Volts
RAM Capacity
2.5 MB
Flash Memory Capacity
32 MB
GPIO Pin Count
20
Clock Speed
16 MHz
Analog Input Count
12
Form Factor
Arduino Uno Compatible
Programming Environment Support
Arduino IDE
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