HardLabs

Lunar65

ItzZeNash·Lunar65·Kicad Files/lunar-65-pcb.kicad_pcb

Lunar65 PCB layout, top view — open source AVR/Arduino board by ItzZeNash

About the Lunar65 PCB

Lunar65 is an open source AVR/Arduino PCB design by ItzZeNash, published on GitHub. It is a 2-layer board measuring 303.8 × 94.2 mm, with 152 components from 21 distinct parts.

Its main chip is the ATMEGA32U4-MUR, from the AVR/Arduino family. Other key parts include the SRV05-4. By type, the board carries 67 diodes, 7 capacitors, 4 resistors, 2 ICs, 2 connectors and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

A keyboard made for personal use and sounds good, as I dont have a keyboard. 65% for optimal usability.

1. Pasting socket foam Pasting socket foam is difficult and cannot be redone. There are two methods: one is to paste the entire surface and the other is to paste only a portion of the surface.

Practice First, practice several times without peeling off the release paper on the adhesive surface. Place the socket foam on a flat surface with the adhesive surface facing up. Straighten any bent or floating parts. Hold the four corners with the back side (part mounting surface) of the main PCB facing down. Look at the main PCB from directly above, align the notch of the mount post with the main…

Lunar65, from the project README
From the project README

Main components on the Lunar65

SRV05-4ATMEGA32U4-MUR

Lunar65 bill of materials (BOM)

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

QtyPartRefs
1
SRV05-4
U1
1
ATMEGA32U4-MUR
ATmega32U4-MUR
U2
1
16MHZ
16MHz
Y1
1
C145956
JST SH 4-pin
J1
1
AVR-ISP-6
J2
1
500MA
500mA
F1
54
1u
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +46
1
2u
MX14
2
1.5U
1.5u
MX16, MX29
2
1.75U
1.75u
MX31, MX56
2
2.25U
2.25u
MX43, MX45
5
1.25U
1.25u
MX59, MX60, MX61, MX63, MX64
1
6.25U
6.25u
MX62
1
C318884
Reset
SW1
67
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +59
3
0.1U
0.1u
C1, C2, C3
1
10U
10u
C4
2
22P
22p
C5, C6
1
1u
C7
2
10K
10k
R1, R4
Show 1 more
QtyPartRefs
2
22
R2, R3

Lunar65 design files

The KiCad project lives in the ItzZeNash/Lunar65 repository on GitHub; these links point at the commit this page was built from.

Lunar65: common questions

What microcontroller does the Lunar65 use?

The Lunar65 is built around the ATMEGA32U4-MUR, from the AVR/Arduino family.

How big is the Lunar65 PCB?

The Lunar65 measures 303.8 × 94.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Lunar65?

152 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 Lunar65 design files?

From the ItzZeNash/Lunar65 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 Lunar65 design in my own project?

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

Can I test firmware for the Lunar65 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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