HardLabs

Junior computer - Copie

laurent-fr·junior_computer_replica·junior-computer/junior-computer - Copie.kicad_pcb

Junior computer - Copie PCB layout, top view — open source board by laurent-fr
Simulate this board

About the Junior computer - Copie PCB

Junior computer - Copie is an open source PCB design by laurent-fr, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 204.5 × 104.1 mm, with 77 components from 48 distinct parts.

Other key parts include the 6522, 2114, 2716, NE565 and LM311. By type, the board carries 25 switches, 22 resistors, 12 capacitors, 11 ICs, 4 connectors and 2 diodes.

It belongs with the retro computing designs in this gallery.

From the project

A replica of the Junior Computer (a KIM-1 clone) published by Elektor in the 80's

The Junior Computer is a 6502 SBC made by Elektor in 1980. It looks a lot like a KIM-1.

This is a replica PCB I made with KiCAD.

The best source of information for this computer is Elektor Magazine from 80's , but you can find a lot on this website : http://retro.hansotten.nl/6502-sbc/elektuur-junior/

This board is not a 100% accurate replica, because I have added directly on the PCB a few updates published later by Elektor : a fix for memory decoding needed for the expansion board the main decoupling capacitor C2 was on wrong side of S25 (activate display) which could reset the computer *…

Junior computer - Copie, from the project README
From the project README

Main components on the Junior computer - Copie

652221142716NE565LM31174LS24174LS243

Junior computer - Copie bill of materials (BOM)

77 components, 48 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
6522
6502
IC1
1
2114
2716
IC2
1
2114
6532
IC3
2
2716
2114
IC4, IC5
1
NE565
74LS145
IC6
1
LM311
74LS145
IC7
1
LM311
NE556
IC8
1
74LS241
74LS00
IC9
1
74LS241
74LS01
IC10
1
74LS243
ULN2003
IC11
1
1Mhz
Q1
1
CONN_01X03_SOCKET
C64AC
J2
1
CONN_01X03_SOCKET
DIN41617-31
J3
1
CONN_01X03_SOCKET
Conn_01x03_Female
J4
1
Conn_01x03_Female
J5
1
RST
S1
1
ST
S2
21
Switch
S3, S4, S5, S6, S7, S8, S9, S10 +13
1
STEP
S24
1
DISPLAY
S25
Show 28 more
QtyPartRefs
1
1N4148
D1
1
1N4148
LED
D2
1
220N
10p
C1
1
47µ 6V
C2
1
22N
100n
C3
1
100n
C4
1
6N8
1µ 16v
C5
2
6N8
1µ 16v
C6, C7
1
100N
1µ 16v
C8
1
47N
1µ 16v
C9
1
1µ 16V
C10
2
1µ 16v
C11, C14
4
3k3
R1, R2, R3, R4
1
22K
4k7
R5
1
10K
330
R6
2
8K2
68
R7, R8
1
4K7
68
R9
2
10K
68
R10, R11
1
6K8
68
R12
1
2K2
68
R13
2
10K
3k3
R14, R15
1
100
3k3
R16
1
330
2k2
R17
1
4K7
68k
R18
1
470
2k2
R19
1
1K2
68k
R20
1
15K
1k
R21
1
4K7
1k
R22

Junior computer - Copie design files

The KiCad project lives in the laurent-fr/junior_computer_replica repository on GitHub; these links point at the commit this page was built from.

Junior computer - Copie: common questions

How big is the Junior computer - Copie PCB?

The Junior computer - Copie measures 204.5 × 104.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Junior computer - Copie?

77 components, from 48 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 Junior computer - Copie design files?

From the laurent-fr/junior_computer_replica repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Junior computer - Copie 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.

More boards in junior_computer_replica

Similar boards