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KU-14194HB-RevB

bwack·KU-14194HB-RevB-KiCad

KU-14194HB-RevB PCB layout, top view — open source board by bwack
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About the KU-14194HB-RevB PCB

KU-14194HB-RevB is an open source PCB design by bwack, published on GitHub. It is a 2-layer board measuring 390.2 × 180.3 mm, with 221 components from 90 distinct parts.

Other key parts include the CIA_U1, CIA_U2, 2364A, 2332A and 2114. By type, the board carries 97 capacitors, 34 resistors, 32 ICs, 26 inductors, 10 connectors and 5 transistors.

It belongs with the retro computing designs in this gallery.

From the project

The rare KU14194HB C64 Motherboard schematics and layout. Retraced in and imported from SprintLayout.

The rare KU14194HB C64 Motherboard schematics and layout. Retraced in and imported from SprintLayout.

This PCB is a replica. It includes the mistakes that Commodore made.

It is necessary to cut a trace above R37 on the bottom side, and add a 1K resistor from R37 and up to a via. See the images folder to where to cut and add a resistor.

Notice how the main crystal oscillator Y1 body is grounded with a wire.

KU-14194HB-RevB, from the project README
From the project README

Main components on the KU-14194HB-RevB

CIA_U1CIA_U22364A2332A21146510_MPU7406N4164-274LS25774LS25874LS1394066_U28PLA_U176581VIC55674LS3737408_U2774LS7474LS19374LS629NMC4044

KU-14194HB-RevB bill of materials (BOM)

221 components, 90 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CIA_U1
U1
1
CIA_U2
U2
2
2364A
U3, U4
1
2332A
U5
1
2114
U6
1
6510_MPU
U7
1
7406N
U8
8
4164-2
U9, U10, U11, U12, U21, U22, U23, U24
2
74LS257
U13, U25
1
74LS258
U14
1
74LS139
U15
2
4066_U28
U16, U28
1
PLA_U17
U17
1
6581
U18
1
VIC
U19
1
556
U20
1
74LS373
U26
1
7408_U27
U27
1
74LS74
U29
1
74LS193
U30
Show 70 more
QtyPartRefs
1
74LS629N
U31
1
MC4044
U32
1
MODULATOR_LONGBOARD
M1
4
2SC1815
Q1, Q2, Q7, Q8
1
TP298/2SD880
Q3
1
Crystal
Y1
1
KEYBOARD_20PIN_MALE
CN1
1
USER_PORT_CON
CN2
1
CASSETTE_PORT_CON
CN3
1
SERIAL_BUS_CON
CN4
1
AV_CONN
CN5
1
EXPANSION_PORT
CN6
1
POWER_CON
CN7
2
CONTROL_PORT
CN8, CN9
1
LED_CONNECTOR
CN10
1
IN4371
CR1
1
IN755
CR2
1
BRIDGE_RECTIFIER
CR4
2
1N4001
CR5, CR6
1
JUMPER_WIRE
E1
1
1A
F1
2
33
RP1, RP2
1
R_ARRAY_7WAY_US
RP3
1
R_ARRAY_9WAY_US
RP4
1
POWER_SWITCH
SW1
1
7812
VR1
1
7805
VR2
1
NOT USED
XT1
13
FERRITE_NARROW
FB1, FB2, FB3, FB5, FB7, FB8, FB9, FB16 +5
9
FERRITE_BEAD
FB4, FB10, FB11, FB12, FB13, FB14, FB15, FB18 +1
2
2.2uH
L1, L2
1
CHOKE
L4
1
1.2uH
L5
54
.1
C1, C2, C3, C4, C5, C6, C7, C9 +46
14
10uF
C8, C12, C13, C14, C15, C17, C24, C34 +6
2
470pF
C10, C11
1
2200uF
C19
2
.22
C20, C21
1
360pF
C23
4
NC
C35, C37, C55, C87
1
20pF
C36
1
51pF
C38
2
1800pF
C48, C93
2
.1
C49, C52
1
15pF 5%
C70
2
NC
C73, C80
2
82pF
C83, C86
1
.47
C85
2
470uF
C88, C90
1
100uF
C91
2
.22
C97, C100
2
10
C107, C108
4
3K3
R1, R43, R44, R45
2
1.5K
R2, R51
2
10K
R3, R7
9
1K
R4, R6, R16, R28, R29, R30, R31, R36 +1
1
560
R5
1
2K7
R17
1
15K
R19
1
0R
R22
1
NC
R23
2
100
R26, R53
1
500
R27
2
47K
R33, R34
1
470K
R35
1
2.7K
R37
1
390
R39
2
1M
R41, R50
1
~
R42
1
330
R52

KU-14194HB-RevB design files

The KiCad project lives in the bwack/KU-14194HB-RevB-KiCad repository on GitHub; these links point at the commit this page was built from.

KU-14194HB-RevB: common questions

How big is the KU-14194HB-RevB PCB?

The KU-14194HB-RevB measures 390.2 × 180.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the KU-14194HB-RevB?

221 components, from 90 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 KU-14194HB-RevB design files?

From the bwack/KU-14194HB-RevB-KiCad repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the KU-14194HB-RevB design in my own project?

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

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