Arduino Leonardo with Headers A000052
What It Is
The Arduino Leonardo with Headers is a standalone development board that lets you program interactive hardware projects with sensors, motors, displays, and more. It's especially popular because it uses a microcontroller with built'in USB support enabling it to act as a keyboard, mouse, or USB device directly from your code.
Infographic'Style Summary
ARDUINO LEONARDO WITH HEADERS | | USB'Enabled ATmega32U4 Microcontroller | MCU | ATmega32U4 (built'in USB support) | Operating Voltage | 5V | Clock Speed | 16MHz | Digital I/O Pins | 20 (PWM on 7 pins) | Analog Inputs | 12 | Memory | 32KB Flash (4KB bootloader) | | | 2.5KB SRAM, 1KB r shields | Power Options | USB / external 712V | Typical Uses | USB devices, input systems, | | | automation, control projects |
Ready'to'use pin headers give you easy access to virtually all on'board I/O, so prototyping and connecting modules or sensors requires no extra soldering.
Key Features & Capabilities
Microcontroller & Built'In USB
The heart of the board is the ATmega32U4 MCU a 16MHz, 8bit AVR chip with native USB support. That means the board can act like a USB keyboard, mouse, game controller, or other HID devices without extra hardware unlike many other Arduino boards that need a separate USB'to'serial chip.
HDMI'like interactive USBontrollers)
Inputs & Outputs
20 digital I/O pins use for LEDs, buttons, relays, etc.
7 PWM channels analog'style output for motors, servos, lights.
12 analog inputs read sensors from potentiometers to environmental sensors.
Header sockets female headers soldered on for easy jumper connections.
Tip: With the headers, you can directly plug in jumper wires, shields, or breadboards for prototyping without soldering.
Power & Connectivity
USB connection for power, programming, and native USB communication.
External power jack or VIN pin for standalone projects (recommended 712V).
The board automatically switches power sources depending on whether USB or external power is connected.
Memory & Performance
32KB flash memory (28KB available to you) for your sketches.
2.5KB SRAM for variables/data at runtime.
1KB EEPROM to store data that persists after power loss.
No onboard advanced connectivity (Wi'Fi/BLE) ideal for standalone, USB'centric, or sensor'based systems.
Why It Matters
The Leonardo with Headers stands out because it can behave as a USB device rather than just as a simple serial controller a powerful feature for building custom USB tools, game controllers, keyboards with macros, or interactive art. Tnality in addition to traditional I/O control.
Typical Use Cases
Custom USB input devices keyboards, mice, MIDI controllers Embedded control projects robotics, lights, sensors Automation & interactive installations Prototyping with breadboards and shields (headers make it easy) Educational platf