shop/ circuitrocks/ leonardo r3 atmega32u4 microcontroller development board

The Leonardo R3 ATmega32U4 Microcontroller Development Board is an Arduino-compatible board for learning, prototyping, and building interactive electronics projects. It uses the ATmega32U4 controller, which supports USB communication directly from the chip.

This board is a good choice for projects that need keyboard, mouse, or USB-style input control. It also works well for sensors, LEDs, buttons, motors, and other common maker projects.

With 20 digital I/O pins, 7 PWM channels, and 12 analog inputs, it gives you more connection options for experiments and builds.

Features:

  • ATmega32U4 microcontroller

  • 16MHz clock speed

  • 5V working voltage

  • Recommended input voltage: 7–12V

  • 20 digital I/O pins

  • 7 PWM channels

  • 12 analog inputs

  • 32KB flash memory

  • 2.5KB SRAM

  • 1KB EEPROM

  • Great for USB HID, sensor, and control projects

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