Arduino Leonardo without Headers

The Arduino Leonardo without Headers is a compact, powerful microcontroller board based on the ATmega32U4 chip with built-in USB communication - no external USB-to-serial converter needed. Shipped without pre-soldered pin headers, this variant gives you complete flexibility to solder your own connectors, mount it flush on custom PCBs, or integrate it directly into finished enclosures.

Specifications

• Board: Arduino Leonardo (Headerless Variant)
• Microcontroller: ATmega32U4
• Operating Voltage: 5V
• Input Voltage (Recommended): 7-12V
• Input Voltage (Limit): 6-20V
• Digital I/O Pins: 20 (7 capable of PWM output)
• Analog Input Pins: 12
• DC Current per I/O Pin: 40 mA
• DC Current for 3.3V Pin: 50 mA
• Flash Memory: 32 KB (4 KB used by bootloader)

Why Choose Arduino Leonardo without Headers?

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Key Features of Arduino Leonardo without Headers

• Native USB Communication: The ATmega32U4 handles USB directly on-chip, eliminating the need for a secondary USB-to-serial processor and enabling the board to appear as a mouse, keyboard, joystick, or custom HID device to any connected computer.
• Headerless Design: Arrives without soldered pin headers, giving you the freedom to solder standard male/female headers, right-angle connectors, or wire directly to the pads for low-profile and custom enclosure builds.
• 20 Digital I/O Pins: Generous GPIO count with 7 PWM-capable pins for motor control, LED dimming, and servo driving.
• 12 Analog Inputs: More analog channels than the Uno, ideal for sensor-heavy projects that need multiple simultaneous analog readings.
• Full Arduino IDE Compatibility: Program seamlessly using the Arduino IDE with the extensive library ecosystem, examples, and community resources.
• Compact & Lightweight: Standard Arduino form factor at just ~20 g makes it easy to embed in wearables, drones, and portable devices.
• Micro-USB Connector: Common Micro-USB cable for programming and power - no special cables required.
• Custom Integration Freedom: The headerless format is purpose-built for makers who want to solder their own connectors or wire directly to pads for permanent installations and custom PCB stacking.
• Native USB HID - A Unique Advantage: Unlike the Uno or Nano, the Leonardo can natively emulate USB devices. Build custom keyboards, game controllers, MIDI instruments, or automated input devices without additional hardware.

Perfect For

• Custom USB Keyboard / Macro Pad: Leverage native HID support to build a programmable keyboard, shortcut pad for video editing, or a stream deck alternative with physical buttons and rotary encoders.
• USB Game Controller / Joystick: Create a custom arcade stick, racing wheel interface, or flight simulator controller that registers as a native USB gamepad - no drivers needed.
• MIDI Controller for Music Production: Build a USB MIDI controller with faders

Frequently Asked Questions

Customer Support

Email: techdepotindia@gmail.com

WhatsApp: Available for setup and troubleshooting help

Order your Arduino Leonardo without Headers today and start building your next project.

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