HardLabs

Alvaro

Kaleidogeist·Alvaro·Hardware/Alvaro.kicad_pcb

Alvaro PCB layout, top view — open source AVR/Arduino board by Kaleidogeist

About the Alvaro PCB

Alvaro is an open source AVR/Arduino PCB design by Kaleidogeist, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 17.8 × 33 mm, with 26 components from 17 distinct parts.

Its main chip is the ATmega32U4, from the AVR/Arduino family. By type, the board carries 10 capacitors, 6 resistors, 5 connectors, 2 diodes, 1 IC and 1 crystal.

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

From the project

Pro Micro-compatible 32u4 Breakout Board

Alvaro, from the project README
From the project README

Main components on the Alvaro

ATmega32U4

Alvaro bill of materials (BOM)

26 components, 17 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATmega32U4
U1
1
16MHz
X1
1
01x02
J2
2
01x12
J3, J4
1
01x05
J5
1
USB_C_Receptacle_USB2.0
P1
1
Polyfuse_Small
F1
1
D_Schottky
D1
1
LED
D2
6
0u1
C1, C2, C3, C4, C5, C10
1
4u7
C6
2
22p
C7, C8
1
1u
C9
2
5k1
R1, R2
1
10k
R3
2
22
R4, R5
1
1k
R6

Alvaro design files

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

Alvaro: common questions

What microcontroller does the Alvaro use?

The Alvaro is built around the ATmega32U4, from the AVR/Arduino family.

How big is the Alvaro PCB?

The Alvaro measures 17.8 × 33 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Alvaro?

26 components, from 17 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Alvaro design files?

From the Kaleidogeist/Alvaro repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Alvaro design in my own project?

Yes, under the terms of its Apache-2.0 license, which Kaleidogeist chose for the repository.

Can I test firmware for the Alvaro 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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