HardLabs

Mysterium

eliaskountouris·MysteriumRerouted

Mysterium PCB layout, top view — open source AVR/Arduino board by eliaskountouris

About the Mysterium PCB

Mysterium is an open source AVR/Arduino PCB design by eliaskountouris, published on GitHub. It is a 2-layer board measuring 347.7 × 146.6 mm, with 206 components from 26 distinct parts.

Its main chip is the Elias Kountouris, from the AVR/Arduino family. By type, the board carries 95 switches, 89 diodes, 7 resistors, 5 capacitors, 1 IC and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

Desigin based on myserium keyboard. I made some adjustments to the schematics, and then rerouted the entire board. I also created firmware for the board using QMK firmware.

Main components on the Mysterium

Elias Kountouris

Mysterium bill of materials (BOM)

206 components, 26 distinct parts.

QtyPartRefs
1
Elias Kountouris
U1
1
Crystal
Y1
1
AVR-ISP-6
J1
1
BOOT
BOOT1
1
500mA
F1
1
RESET
RESET1
1
6.25U
ST83
1
7U
ST84
76
KEYSW
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +68
1
KEYSW
SW30
6
KEYSW
SW34, SW47, SW78, SW80, SW83, SW85
8
KEYSW
SW51, SW79, SW82, SW84, SW89, SW91, SW93, SW95
1
KEYSW
SW52
2
KEYSW
SW64, SW65
1
KEYSW
SW76
1
USB_C_GCT_USB4085
USB1
1
POWER
LED1
87
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +79
2
3.6V
D88, D89
2
22p
C1, C2
Show 6 more
QtyPartRefs
1
4.7u
C3
2
0.1u
C4, C5
2
1.5k
R1, R7
2
5.1k
R2, R5
2
75R
R3, R4
1
10k
R6

Mysterium design files

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

Mysterium: common questions

What microcontroller does the Mysterium use?

The Mysterium is built around the Elias Kountouris, from the AVR/Arduino family.

How big is the Mysterium PCB?

The Mysterium measures 347.7 × 146.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mysterium?

206 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the Mysterium design files?

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

Can I use the Mysterium design in my own project?

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

Can I test firmware for the Mysterium 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.

Similar boards