Little Bird
Magpie (100% Arduino Uno Compatible)
The Magpie is a 100% Arduino Uno-compatible board with a built-in debugging feature: an LED connected to every digital and analogue I/O pin via a 2N7002 MOSF...
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The Magpie is a 100% Arduino Uno-compatible board with a built-in debugging feature: an LED connected to every digital and analogue I/O pin via a 2N7002 MOSFET. When a pin goes high, its corresponding LED lights up, giving you instant visual feedback on pin states without needing the Serial Monitor or additional test equipment.
Fully compatible with the Arduino Uno R2 standard, the Magpie accepts all standard shields, uses the ATmega16U2 for USB communication, and includes ICSP headers for both the main and USB microcontrollers. The board features clearly labelled pins and rounded corners for a clean finish.
Key Features
- LED on Every I/O Pin – Visual debugging via MOSFET-driven LEDs on all digital and analogue pins
- 100% Arduino Uno R2 Compatible – Works with all standard Uno shields
- ATmega328P-PU – Pre-loaded with the Arduino bootloader
- ATmega16U2 USB Interface – Uses the standard Arduino Uno USB driver
- ICSP Headers – For both main MCU and USB microcontroller
- Clear Pin Labels – Easy identification of all I/O pins
- Open-Source Design – Schematic and design files available on GitHub
Specifications
- Microcontroller – ATmega328P-PU
- USB Interface – ATmega16U2
- Flash Memory – 32 KB
- Digital I/O Pins – 14 (6 with PWM)
- Analogue Inputs – 6
- Input Voltage – 6–12 V DC
- Debug MOSFETs – 2N7002 on every I/O pin (analogue MOSFETs on PCB underside)
- USB Connector – Mini-B (cable not included)
Ideal For
- Debugging Arduino projects visually without extra hardware
- Learning electronics with immediate pin-state feedback
- Rapid prototyping where quick I/O verification is needed
Resources
Package Contents
- 1× Magpie Arduino Uno-Compatible Board
Jargon buster
Plain-language definitions for the technical terms used above.
- ATmega328P
- An 8-bit microcontroller chip used on many Arduino Uno-compatible boards. Knowing the controller uses an ATmega328P helps you understand its memory, speed, pin compatibility, and the Arduino sketches it can run.
- Bootloader
- Small starter software on a microcontroller that lets new code be uploaded before the main program runs. Knowing how to enter bootloader mode matters when you need to program the board or recover it after a faulty sketch.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- Flash memory
- Flash memory is non-volatile memory that retains stored data even when power is removed, and can be erased and rewritten in blocks. It lets data such as firmware, settings or saved records persist across power cycles.
- Headers
- Rows of connector contacts on a fixed pitch (commonly 2.54 mm) used to link a board to a breadboard, jumper wires, or another board. They come as male pin headers and female socket headers; when a module ships with pre-soldered headers it can be used straight away, whereas bare pads require soldering the pins yourself.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
Find this product in
Arduino
Related Tutorials
Free guides on learn.littlebird.com.au
