HardLabs

LeonardoBB

asukiaaa·LeonardoBB

LeonardoBB PCB layout, top view — open source AVR/Arduino board by asukiaaa

About the LeonardoBB PCB

LeonardoBB is an open source AVR/Arduino PCB design by asukiaaa, published on GitHub. It is a 2-layer board measuring 48 × 58 mm, with 40 components from 25 distinct parts.

Its main chip is the ATmega32U4-MU, from the AVR/Arduino family. Other key parts include the LMV358, NCP1117-5.0_SOT223 and LP2985-3.3. By type, the board carries 12 capacitors, 10 resistors, 4 ICs, 4 connectors, 2 transistors and 2 switches.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

A KiCad project for merging an Arduino Loenardo and a bread board,

PCB to use an Arduino Leonardo and a bread board together.

Main components on the LeonardoBB

ATmega32U4-MULMV358NCP1117-5.0_SOT223LP2985-3.3

LeonardoBB bill of materials (BOM)

40 components, 25 distinct parts.

QtyPartRefs
1
ATmega32U4-MU
U1
1
LMV358
U2
1
NCP1117-5.0_SOT223
U3
1
LP2985-3.3
U4
1
Q_PMOS_GSD
Q1
1
Q_DUAL_PMOS_S1G1D2S2G2D1
Q2
1
Crystal_GND24
Y1
1
USB_B_Micro
J1
2
Conn_01x17
J2, J3
1
I2C
J4
2
CG0603MLC-05E
DZ1, DZ2
1
SW_SPDT
SW1
1
SW_Push
SW2
1
D
D1
1
LED
D2
1
MH2029-300Y
FB1
2
22p
C1, C2
3
100n
C3, C5, C7
3
1u
C4, C6, C10
2
10u
C8, C9
Show 5 more
QtyPartRefs
1
10n
C12
1
2.2u
C13
7
10k
R1, R4, R5, R6, R8, R9, R10
2
22
R2, R3
1
1k
R7

LeonardoBB design files

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

LeonardoBB: common questions

What microcontroller does the LeonardoBB use?

The LeonardoBB is built around the ATmega32U4-MU, from the AVR/Arduino family.

How big is the LeonardoBB PCB?

The LeonardoBB measures 48 × 58 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LeonardoBB?

40 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the LeonardoBB design files?

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

Can I use the LeonardoBB design in my own project?

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

Can I test firmware for the LeonardoBB 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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