Commodore-Plus4
About the Commodore-Plus4 PCB
Commodore-Plus4 is an open source PCB design by StormTrooper, published on GitHub. It is a 2-layer board measuring 284.7 × 158.9 mm, with 212 components from 70 distinct parts.
Other key parts include the 8360, 8501, 6551, 74LS08 and 6529. By type, the board carries 66 inductors, 52 capacitors, 27 ICs, 27 resistors, 14 connectors and 4 transistors.
It belongs with the retro computing designs in this gallery.
From the project
The schematic for the Commodore Plus 4 (310162 Rev D) was taken from the Plus 4 Service Manual 314001-04 (1984 Oct) and converted into KiCad (Version 5.10)
The schematic for the Commodore Plus 4 (310162 Rev D) was taken from the Plus 4 Service Manual 314001-04 (1984 Oct) and converted into KiCad (Version 5.10)
I have also created KiCad footprints and symbols for the custom components as well as some 3D images.
The end goal is to also have a matching PCB layout which together with the schmatic will be useful for troubleshooting and repairing these retro computers. (This is a work in progress as its a lot of working trying to get a matching PCB Layout)
Main components on the Commodore-Plus4
Commodore-Plus4 bill of materials (BOM)
212 components, 70 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 8360 | DIP-48_W15.24mm | U1 |
| 1 | 8501 | DIP-40_W15.24mm | U2 |
| 1 | 6551 | DIP-28_W15.24mm | U3 |
| 1 | 74LS08 | DIP-14_W7.62mm | U4 |
| 2 | 6529 | DIP-20_W7.62mm | U5, U27 |
| 1 | 74LS04 | DIP-14_W7.62mm | U6 |
| 1 | 74LS06N | DIP-14_W7.62mm | U7 |
| 1 | LM555 | DIP-8_W7.62mm | U8 |
| 2 | 74LS257 | DIP-16_W7.62mm | U9, U10 |
| 8 | 4164 | DIP-16_W7.62mm | U11, U12, U13, U14, U15, U16, U17, U18 |
| 1 | 251641 | DIP-28_W15.24mm | U19 |
| 1 | 74LS139 | DIP-16_W7.62mm | U20 |
| 1 | 74LS175 | DIP-16_W7.62mm | U21 |
| 1 | 74LS27 | DIP-14_W7.62mm | U22 |
| 4 | 23128 | DIP-28_W15.24mm | U23, U24, U25, U26 |
| 1 | RFMODULATOR | RF_Modulator | M1 |
| 3 | 2SC1815 | TO-92L_Inline_Wide | Q1, Q2, Q3 |
| 1 | 2SD880 | TO-220-3_Vertical | Q4 |
| 1 | 17.73447 | Crystal_HC18-U_Horizontal | Y1 |
| 1 | 1.8432M | Crystal_HC33-U_Horizontal | Y2 |
Show 50 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Conn_01x04 | Connector_Power_4pin_251614_01 | CN1 |
| 1 | Conn_01x07 | Connector_DIN_Female_6Pin_3rows | CN2 |
| 1 | Conn_01x07 | Connector_Mini-DIN_Female_7Pin_2rows | CN3 |
| 1 | 50PinEdge | 50Pin_Edge_Connector | CN4 |
| 2 | Conn_01x08 | Connector_Mini-DIN_Female_8Pin_2rows | CN5, CN6 |
| 1 | Conn_01x08 | Connector_DIN_Female_8Pin_3rows | CN7 |
| 1 | Keyboard-Matrix | Keyboard_Connector | CN8 |
| 6 | Jumper_NC_Dual | Jumper | J1, J2, J3, J4, J5, J6 |
| 1 | D_Bridge_+-AA | Diode_Bridge_12.5x12.5 | CR1 |
| 1 | 6.8V | D_A-405_P12.70mm_Horizontal | CR2 |
| 10 | 1N914 | D_DO-35_SOD27_P12.70mm_Horizontal | CR11, CR12, CR13, CR14, CR15, CR16, CR17, CR18 +2 |
| 1 | 1.5A | Fuseholder_Cylinder-6.3x32mm | F1 |
| 2 | 3k3 | R_Array_SIP6 | RP1, RP2 |
| 2 | Resistor-Network | R_Array_SIP8 | RP3, RP4 |
| 1 | SW_DPST | Switch-Rocker | SW1 |
| 1 | SW_Push | Switch-Pushbutton | SW2 |
| 34 | Ferrite_Bead_Small | L_Axial_L7.0mm_D3.3mm_P5.08mm_Vertical | FB2, FB3, FB4, FB5, FB6, FB7, FB8, FB9 +26 |
| 28 | Ferrite_Bead_Small | Ferrite_Bead_L5.0mm_D3.6mm_P13.00mm_Horizontal | FB15, FB16, FB17, FB18, FB19, FB20, FB21, FB41 +20 |
| 1 | EMI_Filter | EMI-Filter | L1 |
| 1 | EMI_Filter_CommonMode | Noise_Filter | L2 |
| 2 | 1.2u | L_Axial_L10.0mm_D4.0mm_P15.5mm_Horizontal | L3, L4 |
| 1 | 100u | CP_Radial_D8.0mm_P3.50mm | C1 |
| 30 | 100n | C_Disc_D5.0mm_W2.5mm_P5.00mm | C2, C9, C15, C16, C21, C24, C25, C26 +22 |
| 1 | 220n | C_Disc_D12.5mm_W5.0mm_P10.00mm | C3 |
| 1 | 220n | Capacitor_D12.5mm_W5.0mm_P10.00mm | C4 |
| 2 | 220n | C_Disc_D5.0mm_W2.5mm_P5.00mm | C5, C6 |
| 1 | 2200u | CP_Axial_L40.0mm_D16.0mm_P48.00mm_Horizontal | C7 |
| 3 | 10u | CP_Radial_D6.3mm_P2.50mm | C8, C20, C27 |
| 1 | 4-20p | TrimCap_251029-02 | C10 |
| 1 | 33p | C_Disc_D5.0mm_W2.5mm_P5.00mm | C11 |
| 1 | 220p | C_Disc_D5.0mm_W2.5mm_P5.00mm | C12 |
| 1 | 150p | C_Disc_D5.0mm_W2.5mm_P5.00mm | C13 |
| 1 | 10n | C_Disc_D5.0mm_W2.5mm_P5.00mm | C14 |
| 4 | 10u | C_Disc_10mm_6mm | C17, C18, C22, C30 |
| 1 | 2700p | C_Disc_D5.0mm_W2.5mm_P5.00mm | C19 |
| 1 | 1u | CP_Radial_D6.3mm_P2.50mm | C23 |
| 1 | 100n | C_Rect_L7.0mm_W2.5mm_P5.00mm | C40 |
| 1 | 100n | C_Disc_D4.7mm_W2.5mm_P5.00mm | C100 |
| 1 | 4k7 | Resistor_Horizontal | R1 |
| 3 | 10k | Resistor_Horizontal | R2, R26, R27 |
| 2 | 470 | Resistor_Horizontal | R3, R7 |
| 1 | 220 | Resistor_Horizontal | R4 |
| 1 | 18k | Resistor_Horizontal | R5 |
| 2 | 1k5 | Resistor_Horizontal | R6, R17 |
| 3 | 100k | Resistor_Horizontal | R8, R16, R19 |
| 9 | 1k | Resistor_Horizontal | R9, R10, R12, R13, R21, R22, R23, R24 +1 |
| 1 | 12k | Resistor_Horizontal | R11 |
| 2 | 240 | Resistor_Horizontal | R14, R15 |
| 1 | 47k | Resistor_Horizontal | R18 |
| 1 | 3k | Resistor_Horizontal | R20 |
Commodore-Plus4 design files
The KiCad project lives in the StormTrooper/Commodore-Plus4 repository on GitHub; these links point at the commit this page was built from.
Commodore-Plus4: common questions
How big is the Commodore-Plus4 PCB?
The Commodore-Plus4 measures 284.7 × 158.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Commodore-Plus4?
212 components, from 70 distinct parts. The full bill of materials is listed on this page.
Where can I download the Commodore-Plus4 design files?
From the StormTrooper/Commodore-Plus4 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Commodore-Plus4 design in my own project?
The repository has no license, so all rights stay with StormTrooper. Use it as a reference, and ask the author before reusing the design.
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