shop/ circuitrocks/ leonardo r3 atmega32u4 development board

The Leonardo R3 ATmega32U4 Development Board is an Arduino-compatible board for USB-based projects, learning, and prototyping. It uses the ATmega32U4 microcontroller, which has built-in USB support for direct computer communication.

This makes it useful for projects that need keyboard, mouse, or USB HID functions. It also works well for basic electronics builds using sensors, LEDs, buttons, motors, and other modules.

With 20 digital I/O pins, 7 PWM outputs, and 12 analog inputs, this board gives makers more control options for different projects.

Features:

  • ATmega32U4 microcontroller

  • Built-in USB communication

  • 5V operating voltage

  • 16MHz clock speed

  • 20 digital I/O pins

  • 7 PWM outputs

  • 12 analog inputs

  • 32KB flash memory

  • 2.5KB SRAM

  • 1KB EEPROM

  • Supports USB HID projects like keyboard and mouse control

  • Great for learning, testing, and Arduino-compatible builds

FAQ

Will this ship from Manila?

Yes — all stock ships from our Quezon City warehouse. Order before 4 PM weekdays for same-day cutoff via J&T or LBC.

Do you ship nationwide?

Yes. Metro Manila usually arrives next-day; provincial 1–3 working days.

Can I get this on a school PO or class order?

Yes — we accept Purchase Orders from accredited schools and universities. Contact us with your PO details and we'll process it.

Is this compatible with Arduino, ESP32, or Raspberry Pi?

Most parts work with common maker boards — check the description for specific pinout / voltage notes. If you're unsure, send us a message before ordering.

What's your return policy?

7-day inspection window for DOA units. Email proof of issue and we'll ship a replacement or refund. Used / installed parts are not returnable unless faulty.

Do you offer technical support?

Yes — questions land on our forum or via email, weekday or weekend. We've actually wired up most of what we sell.

Build with this board

// from learn.circuit.rocks

Notes from the bench

// from blog.circuit.rocks

Ask the community

// from forum.circuit.rocks