HardLabs

Orochi 5x5x3

dijkstrw·5x5x3·schematic/5x5x3.kicad_pcb

Orochi 5x5x3 PCB layout, top view — open source board by dijkstrw

About the Orochi 5x5x3 PCB

Orochi 5x5x3 is an open source PCB design by dijkstrw, published on GitHub. It is a 4-layer board measuring 100 × 100 mm, with 125 components from 14 distinct parts.

By type, the board carries 27 capacitors, 25 switches, 25 LEDs, 25 diodes, 16 connectors and 6 resistors.

It belongs with the keyboards designs in this gallery.

From the project

5x5 macro board using the NRF52840, ZMK and Zephyr

Third iteration of my 5x5; - based on zmk, using the nicenano2 board / Supermini RF52840

Questions: - Can the LDO keep up with 25 sk6803s?

25 * 5mA = 125mA, within range of charger and ldo on nicenano2

- Where are the specific pins for spi / i2c?

RF52840 can reconfigure its pins, so can be assigned to work well with whatever layout we want.

- foostan: corne / crkb: the first time I saw sk6812 in mini-e variant.

Orochi 5x5x3 bill of materials (BOM)

125 components, 14 distinct parts.

QtyPartRefs
1
SW Debug
J1
1
Battery
J2
7
Conn_01x03_Male
J3, J4, J7, J8, J11, J12, J15
7
Conn_01x03_Female
J5, J6, J9, J10, J13, J14, J16
1
SW_SPST
PWSW1
1
ALPS_EC11
SW6
24
SW
SW11, SW12, SW13, SW14, SW21, SW22, SW23, SW24 +16
1
SK68XXMINI-E
LED11
24
SK6812MINI-E
LED12, LED13, LED14, LED15, LED21, LED22, LED23, LED24 +16
25
1N4148
D11, D12, D13, D14, D15, D21, D22, D23 +17
27
100n
C11, C12, C13, C14, C15, C19, C20, C21 +19
4
10k
R15, R16, R17, R18
1
220
R19
1
470
R20

Orochi 5x5x3 design files

The KiCad project lives in the dijkstrw/5x5x3 repository on GitHub; these links point at the commit this page was built from.

Orochi 5x5x3: common questions

How big is the Orochi 5x5x3 PCB?

The Orochi 5x5x3 measures 100 × 100 mm, has 4 copper layers and is 1.48 mm thick.

How many components are on the Orochi 5x5x3?

125 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the Orochi 5x5x3 design files?

From the dijkstrw/5x5x3 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Orochi 5x5x3 design in my own project?

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

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