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ZX-Spectrum-Issue-4B

iansbremner·ZX-Spectrum-Issue-4B-KiCAD

ZX-Spectrum-Issue-4B PCB layout, top view — open source board by iansbremner
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About the ZX-Spectrum-Issue-4B PCB

ZX-Spectrum-Issue-4B is an open source PCB design by iansbremner, published on GitHub. It is a 2-layer board measuring 213.4 × 130.8 mm, with 199 components from 65 distinct parts.

Other key parts include the ULA, Z80, LS157, ROM and 4116. By type, the board carries 72 resistors, 57 capacitors, 26 ICs, 15 diodes, 10 connectors and 2 crystals.

It belongs with the test & measurement designs in this gallery.

From the project

Recreation of the ZX Spectrum Issue 4B board in KiCAD

Main components on the ZX-Spectrum-Issue-4B

ULAZ80LS157ROM4116LM1889453274LS3274LS0074LS157

ZX-Spectrum-Issue-4B bill of materials (BOM)

199 components, 65 distinct parts.

QtyPartRefs
1
ULA
IC1
1
Z80
IC2
2
LS157
IC3, IC4
1
ROM
IC5
8
4116
IC6, IC7, IC8, IC9, IC10, IC11, IC12, IC13
1
LM1889
IC14
8
4532
IC15, IC16, IC17, IC18, IC19, IC20, IC21, IC22
1
74LS32
IC23
1
74LS00
IC24
2
74LS157
IC25, IC26
1
14Mhz
X1
1
4.43Mhz
X2
1
Edge_Connector
E1
1
OKI
J1
3
TI
J2, J3, J4
1
Barrel_Jack_MountingPin
J7
1
UR1
J8
1
UR2
J9
1
UR3
J10
1
UR4
J11
Show 45 more
QtyPartRefs
2
Barrel_Jack
Ear0, Mic0
1
Conn_01x05
KB1
1
Conn_01x08
KB2
1
Speaker
LS1
1
L7805
REG1
1
Coil
T1
5
ZTX313
TR1, TR2, TR3, TR6, TR7
1
ZTX650
TR4
1
ZTX315
TR5
2
BC184
TR8, TR9
1
Modulator
TV1
14
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +6
1
DZY88
D19
22
22nF
C1, C2, C3, C4, C5, C6, C7, C8 +14
6
22uF
C25, C28, C34, C50, C65, C80
3
1uF
C27, C46, C79
2
47nF
C29, C76
8
100nF
C31, C32, C43, C68, C69, C70, C71, C75
3
10nF
C35, C39, C41
2
33pF
C37, C38
2
100uF
C44, C45
1
560pF
C49
2
150pF
C52, C53
1
47pF
C63
1
184pF
C64
1
100pF
C67
2
16pF
C72, C73
1
4.7uF
C74
11
470
R1, R2, R3, R4, R5, R6, R7, R8 +3
9
8k2
R9, R10, R11, R12, R13, R14, R15, R16 +1
8
330
R17, R18, R19, R20, R21, R22, R23, R32
13
1k
R24, R37, R42, R45, R46, R47, R56, R58 +5
1
180
R25
13
10K
R28, R29, R30, R31, R35, R49, R65, R66 +5
2
680
R33, R36
1
15 1W
R34
1
3K
R43
1
5K1
R44
1
4K7
R48
3
2K2
R51, R52, R79
1
390R
R53
1
220K
R60
2
15
R61, R62
2
47K
R64, R72
2
220
R70, R71

ZX-Spectrum-Issue-4B design files

The KiCad project lives in the iansbremner/ZX-Spectrum-Issue-4B-KiCAD repository on GitHub; these links point at the commit this page was built from.

ZX-Spectrum-Issue-4B: common questions

How big is the ZX-Spectrum-Issue-4B PCB?

The ZX-Spectrum-Issue-4B measures 213.4 × 130.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ZX-Spectrum-Issue-4B?

199 components, from 65 distinct parts. The full bill of materials is listed on this page.

Where can I download the ZX-Spectrum-Issue-4B design files?

From the iansbremner/ZX-Spectrum-Issue-4B-KiCAD repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the ZX-Spectrum-Issue-4B design in my own project?

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

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