HardLabs

MicroBit328

StuckAtPrototype·MicroBit328·version 0.6 328 - kicad/microbit 0.6.kicad_pcb

MicroBit328 PCB layout, top view — open source AVR/Arduino board by StuckAtPrototype
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About the MicroBit328 PCB

MicroBit328 is an open source AVR/Arduino PCB design by StuckAtPrototype, published on GitHub. It is a 2-layer board measuring 17.7 × 12.1 mm, with 23 components from 14 distinct parts.

Its main chip is the Atmega328p_MMHR, from the AVR/Arduino family. Other key parts include the LP2985-50DBVR. By type, the board carries 6 capacitors, 3 connectors, 3 resistors, 2 ICs, 2 diodes and 1 transistor.

From the project

��# MicroBit328 The World's Smallest Arduino Compatible Board [![License](https://img.shields.io/badge/License-Apache%202.0-blue.sv

��# MicroBit328 The World's Smallest Arduino Compatible Board [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) ## Overview The MicroBit328 is an ultra-compact Arduino-compatible development board measuring just 11mm…

Main components on the MicroBit328

LP2985-50DBVR

MicroBit328 bill of materials (BOM)

23 components, 14 distinct parts.

QtyPartRefs
1
—
U1
1
LP2985-50DBVR
U2
1
16MHz
Q1
1
MB_Header_12_A
J1
1
MB_Header_12_B
J2
1
FTDI
J3
6
VAL**
STICHING_VIA11, STICHING_VIA13, STICHING_VIA14, STICHING_VIA15, STICHING_VIA22, STICHING_VIA23
1
RED
D1
1
BLUE
D2
4
0.1uF
C1, C2, C3, C6
1
1uF
C4
1
2.2uF
C5
2
2.7k
R1, R3
1
10k
R2

MicroBit328 design files

The KiCad project lives in the StuckAtPrototype/MicroBit328 repository on GitHub; these links point at the commit this page was built from.

MicroBit328: common questions

What microcontroller does the MicroBit328 use?

The MicroBit328 is built around the Atmega328p_MMHR, from the AVR/Arduino family.

How big is the MicroBit328 PCB?

The MicroBit328 measures 17.7 × 12.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MicroBit328?

23 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the MicroBit328 design files?

From the StuckAtPrototype/MicroBit328 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the MicroBit328 design in my own project?

The repository has no license, so all rights stay with StuckAtPrototype. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the MicroBit328 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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