







🚀 Unlock your innovation with KEYESTUDIO Leonardo R3 — where pro-grade meets open-source cool!
The KEYESTUDIO Leonardo R3 Development Board is a fully compatible Arduino IDE board featuring an ATMEGA 32u4 chip, 23 digital I/O ports, 7 PWM ports, and 12 analog inputs. It operates at 5V with recommended input voltage of 7-12V, supports up to 50mA current per port, and is FCC & CE certified for quality and eco-friendly production. Ideal for millennial makers seeking reliable, versatile prototyping with a sleek yellow-black design.






| Standing screen display size | 3.42 Inches |
| Processor | 16 MHz 5x86 |
| RAM | 1 GB SRAM |
| Wireless Type | Bluetooth |
| Brand | KEYESTUDIO |
| Series | KEYESTUDIO Leonardo R3 |
| Item model number | KE-0011 |
| Operating System | Windows 10 |
| Item Weight | 2.08 ounces |
| Product Dimensions | 2.7 x 2.09 x 0.17 inches |
| Item Dimensions LxWxH | 2.7 x 2.09 x 0.17 inches |
| Color | leonardo r3 |
| Processor Brand | Microchip Technology |
| Number of Processors | 1 |
| Computer Memory Type | DDR3 SDRAM |
| Voltage | 5 Volts |
| Manufacturer | keyes |
| Language | English |
| ASIN | B0786LJQ8K |
| Is Discontinued By Manufacturer | No |
| Date First Available | November 13, 2017 |
A**B
Good quality with affordable price
This development board offers incredible value with its exceptional quality and impressive performance, making it a top choice for Arduino enthusiasts.Highly recommended.
A**J
Ver good quality
Highly recommend the Leonardo developing board, the time response to the quality to the number of inputs/outputs and its variations is very competitive to other developing board in economical cost.
L**R
Perfect!
Does exactly what I needed it to do. It arrived quickly and works as expected with no problems. Price is better than other options. Highly recommended.
Trustpilot
1 week ago
3 days ago