HardLabs

OPLL01

hwreverse·PCBDesignLectures·3_21_22/OPLL01/OPLL01.kicad_pcb

OPLL01 PCB layout, top view — open source AVR/Arduino board by hwreverse

About the OPLL01 PCB

OPLL01 is an open source AVR/Arduino PCB design by hwreverse, published on GitHub under the BSD-3-Clause license. It is a 2-layer board measuring 101.6 × 53.3 mm, with 30 components from 24 distinct parts.

Its main chip is the ATMEGA328P-AU, from the AVR/Arduino family. Other key parts include the CH340C. By type, the board carries 14 connectors, 7 capacitors, 5 resistors, 2 ICs, 1 crystal and 1 inductor.

From the project

PCB Design course projects

Main components on the OPLL01

ATMEGA328P-AUCH340C

OPLL01 bill of materials (BOM)

30 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA328P-AU
LMC660AIM
U1
1
CH340C
YM2413
U2
1
16MHZ
3.57MHz
Y1
1
USB_C_RECEPTACLE_USB2.0
AudioJack3
J1
1
Digital
P1
1
Power
P2
2
Analog
P3, P4
1
PWM
P5
1
PWM
P6
1
Communication
P7
6
CONN_01X01
P8, P9, P10, P11, P12, P13
1
1mH
L1
1
100NF
10uF
C1
1
100NF
15nF
C2
1
10UF
10uF
C3
1
100NF
15pF
C4
1
15PF
15pF
C5
1
15PF
1000uF
C6
1
100NF
100nF
C7
1
4.7K
2k2
R1
Show 4 more
QtyPartRefs
1
4.7K
4k7
R2
1
5.1K
2k2
R3
1
5.1K
10K
R4
1
2.2K
4k7
R5

OPLL01 design files

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

OPLL01: common questions

What microcontroller does the OPLL01 use?

The OPLL01 is built around the ATMEGA328P-AU, from the AVR/Arduino family.

How big is the OPLL01 PCB?

The OPLL01 measures 101.6 × 53.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OPLL01?

30 components, from 24 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 OPLL01 design files?

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

Can I use the OPLL01 design in my own project?

Yes, under the terms of its BSD-3-Clause license, which hwreverse chose for the repository.

Can I test firmware for the OPLL01 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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