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Selkäsalama-64

Jan-Aarela·Salama-64·kicad_selka_rev2/kicad_selka_rev2.kicad_pcb

Selkäsalama-64 PCB layout, top view — open source AVR/Arduino board by Jan-Aarela

About the Selkäsalama-64 PCB

Selkäsalama-64 is an open source AVR/Arduino PCB design by Jan-Aarela, published on GitHub. It is a 2-layer board measuring 64.8 × 101.7 mm, with 89 components from 11 distinct parts.

Its main chip is the ATtiny 861A, from the AVR/Arduino family. By type, the board carries 64 diodes, 16 resistors, 4 connectors, 3 capacitors, 1 IC and 1 switch.

From the project

aka SelkäSalama-64 / Suur-Possu / Mega-Possu

Kaytin protoversiota yövalona kotona :D ja iski idea. Mitä jos, tästä tekisi selkäsalaman. Niinkuin ysärillä... KiCadi tulille vaan ja lopputulos alla:

Ledit on jaettu puolin kahteen eri charlieplexiin. (7^2-7 (-10) viritelmällä). Miksei kaikkia ledejä yhteen pleksiin? No siksi koska jos yhteen pleksiin laittaa kaikki ledit niin duty cycle olisi ~1.5%, joka on aika pieni. Kahdella pleksillä sen saa ~3%, jolloin ledit ovat kirkkaampia.

Selkäsalama-64, from the project README
From the project README

Main components on the Selkäsalama-64

ATtiny 861A

Selkäsalama-64 bill of materials (BOM)

89 components, 11 distinct parts.

QtyPartRefs
1
ATtiny 861A
U1
1
Conn_01x02
J1
1
Conn_01x06
J2
2
Conn_01x08
J3, J4
1
LIUKU
SW1
64
LED_45deg
D1, D2, D3, D4, D5, D6, D7, D8 +56
1
10u
C1
2
100n
C2, C3
14
27
R1, R2, R3, R4, R5, R6, R7, R8 +6
1
X
R15
1
4.7K
R16

Selkäsalama-64 design files

The KiCad project lives in the Jan-Aarela/Salama-64 repository on GitHub; these links point at the commit this page was built from.

Selkäsalama-64: common questions

What microcontroller does the Selkäsalama-64 use?

The Selkäsalama-64 is built around the ATtiny 861A, from the AVR/Arduino family.

How big is the Selkäsalama-64 PCB?

The Selkäsalama-64 measures 64.8 × 101.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Selkäsalama-64?

89 components, from 11 distinct parts. The full bill of materials is listed on this page.

Where can I download the Selkäsalama-64 design files?

From the Jan-Aarela/Salama-64 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Selkäsalama-64 design in my own project?

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

Can I test firmware for the Selkäsalama-64 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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