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Mistrum Klavesnice

Lazarus-L-o-n-g·Mistrum·Klavesnice/Mistrum_Klavesnice.kicad_pcb

Mistrum Klavesnice PCB layout, top view — open source board by Lazarus-L-o-n-g
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About the Mistrum Klavesnice PCB

Mistrum Klavesnice is an open source PCB design by Lazarus-L-o-n-g, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 277.5 × 140 mm, with 83 components from 60 distinct parts.

Other key parts include the 4066. By type, the board carries 48 switches, 21 diodes, 8 resistors, 2 ICs, 2 capacitors and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

All schematics and PCBs are made using KiCad.

All schematics and PCBs are made using KiCad.

The newly designed extended Cherry MX Keyboard features: - Mechanical Cherry MX switches - ZX Spectrum compatibility - Optional bus or external power supply (external is deafult for Mistrum) - Extended to separate cursors keys, delete key and special Mistrum keys (key Mistrum, NMI and RESET), realized as logic switches - Two LED indicators, optional (for example BOOT, DRIVE) - Two PCBs - main board and mask - Identical size and mounting holes as PMD-85 coputer keyboard

Mistrum Klavesnice, from the project README
From the project README

Main components on the Mistrum Klavesnice

4066

Mistrum Klavesnice bill of materials (BOM)

83 components, 60 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
4066
U1, U2
1
1x8 PinHeader
J1
1
FRB KB
K1
1
1
SW1
1
Q
SW2
1
A
SW3
1
CS
SW4
1
2
SW5
1
W
SW6
1
S
SW7
1
Z
SW8
1
3
SW9
1
E
SW10
1
D
SW11
1
X
SW12
1
4
SW13
1
R
SW14
1
F
SW15
1
C
SW16
1
5
SW17
Show 40 more
QtyPartRefs
1
T
SW18
1
G
SW19
1
V
SW20
1
6
SW21
1
Y
SW22
1
H
SW23
1
B
SW24
1
7
SW25
1
U
SW26
1
J
SW27
1
N
SW28
1
8
SW29
1
I
SW30
1
K
SW31
1
M
SW32
1
9
SW33
1
O
SW34
1
L
SW35
1
SS
SW36
1
0
SW37
1
P
SW38
1
CR
SW39
1
SP
SW40
1
LEFT
SW41
1
DOWN
SW42
1
UP
SW43
1
RIGHT
SW44
1
DEL
SW45
1
NMI
SW46
1
RESET
SW47
1
MISTRUM (SUPER)
SW48
18
BAT85
D1, D2, D3, D4, D5, D6, D7, D8 +10
1
BOOT
D19
1
POWER
D20
1
DRIVE
D21
1
100N
100n
C1
1
22UF
22uF
C2
6
100K
100k
R1, R2, R3, R4, R5, R6
1
180
R7
1
1k
R8

Mistrum Klavesnice design files

The KiCad project lives in the Lazarus-L-o-n-g/Mistrum repository on GitHub; these links point at the commit this page was built from.

Mistrum Klavesnice: common questions

How big is the Mistrum Klavesnice PCB?

The Mistrum Klavesnice measures 277.5 × 140 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mistrum Klavesnice?

83 components, from 60 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 Mistrum Klavesnice design files?

From the Lazarus-L-o-n-g/Mistrum 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 Mistrum Klavesnice design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

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