HardLabs

Solheim68

evyd13·solheim68

Solheim68 PCB layout, top view — open source AVR/Arduino board by evyd13
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About the Solheim68 PCB

Solheim68 is an open source AVR/Arduino PCB design by evyd13, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 323 × 94.1 mm, with 164 components from 20 distinct parts.

Its main chip is the ATmega32U4, from the AVR/Arduino family. By type, the board carries 77 relays, 72 diodes, 6 capacitors, 4 resistors, 2 connectors and 1 IC.

From the project

Replacement PCB for the VA68m with mini-usb port

Solheim68, from the project README
From the project README

Main components on the Solheim68

ATmega32U4

Solheim68 bill of materials (BOM)

164 components, 20 distinct parts.

QtyPartRefs
1
ATmega32U4
U1
1
XTAL_GND
X1
1
USB_mini_micro_B
J1
1
ISP
J2
59
KEYSW
K1, K2, K3, K4, K5, K6, K7, K8 +51
1
KEYSW
K14
2
KEYSW
K17, K30
2
KEYSW
K33, K61-1
8
KEYSW
K33-1, K49-1, K65, K66, K67, K75, K76, K77
2
KEYSW
K46, K49
1
KEYSW
K46-1
1
KEYSW
K61
1
KEYSW
K71
1
SW_Push
SW1
72
D
D1, D2, D3, D4, D5, D6, D7, D8 +64
4
0.1u
C103, C104, C105, C106
1
4.7u
C107
1
1u
C108
2
10k
R101, R102
2
22
R103, R104

Solheim68 design files

The KiCad project lives in the evyd13/solheim68 repository on GitHub; these links point at the commit this page was built from.

Solheim68: common questions

What microcontroller does the Solheim68 use?

The Solheim68 is built around the ATmega32U4, from the AVR/Arduino family.

How big is the Solheim68 PCB?

The Solheim68 measures 323 × 94.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Solheim68?

164 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Solheim68 design files?

From the evyd13/solheim68 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Solheim68 design in my own project?

Yes, under the terms of its GPL-3.0 license, which evyd13 chose for the repository.

Can I test firmware for the Solheim68 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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