HardLabs

Atmega328

owhite·QS165_encoder·AS5048_atmega328p/atmega328.kicad_pcb

Atmega328 PCB layout, top view — open source AVR/Arduino board by owhite

About the Atmega328 PCB

Atmega328 is an open source AVR/Arduino PCB design by owhite, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 55.3 × 55.3 mm, with 25 components from 21 distinct parts.

Its main chip is the ATMEGA328P-AU, from the AVR/Arduino family. Other key parts include the AS5047D. By type, the board carries 9 capacitors, 5 connectors, 3 resistors, 2 ICs, 2 diodes and 1 transistor.

From the project

QS165 encoder based on the AS5047 chip.

Project area for an encoder retrofit for the QS165 motor with a magnetic sensor that produces hall output.

See the firmware directory to run the atmega.

Atmega328, from the project README
From the project README

Main components on the Atmega328

ATMEGA328P-AUAS5047D

Atmega328 bill of materials (BOM)

25 components, 21 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA328P-AU
ATmega328P-AU
U1
1
AS5047D
AS5048A
U2
1
SI2319CDS
Si2319CDS
Q1
1
Crystal
Y1
1
Conn_01x04
J1
1
Conn_01x02
J2
1
Conn_01x03
J4
1
Conn_01x08
J5
1
Conn_01x02
J6
1
Conn_02x03_Top_Bottom
ISP1
1
SolderJumper_2_Open
JP1
1
BZV55C6V2
D1
1
C90692
RED_LED
D2
1
100N
100n
C1
1
4.7
C2
4
100N
100n
C3, C4, C5, C8
2
20P
20p
C6, C7
1
10
C9
1
100K
100k
R1
1
10K
10k
R2
Show 1 more
QtyPartRefs
1
20K
20k
R3

Atmega328 design files

The KiCad project lives in the owhite/QS165_encoder repository on GitHub; these links point at the commit this page was built from.

Atmega328: common questions

What microcontroller does the Atmega328 use?

The Atmega328 is built around the ATMEGA328P-AU, from the AVR/Arduino family.

How big is the Atmega328 PCB?

The Atmega328 measures 55.3 × 55.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Atmega328?

25 components, from 21 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 Atmega328 design files?

From the owhite/QS165_encoder repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Atmega328 design in my own project?

Yes, under the terms of its GPL-3.0 license, which owhite chose for the repository.

Can I test firmware for the Atmega328 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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