PSU2
About the PSU2 PCB
PSU2 is an open source PCB design by KALTCHUK, published on GitHub. It is a 2-layer board measuring 99.7 × 69.9 mm, with 20 components from 17 distinct parts.
Other key parts include the LM317_TO-220. By type, the board carries 6 connectors, 5 resistors, 3 diodes, 1 IC and 1 relay.
It belongs with the retro computing designs in this gallery.
From the project
"Anyone who has brought up CP/M on a homebuilt computer has felt this moment of elation. A myriad of connections are properly closed; bits are flying at lightning speeds over busses and through circuits and program logic, to produce a single prompt". Gary Kildall
Main components on the PSU2
PSU2 bill of materials (BOM)
20 components, 17 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM317_TO-220 | TO-220-3_Vertical | U1 |
| 1 | Ext switch | PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | To switch | PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | Mains | IEC60320_2pin | J3 |
| 1 | Vo enable | PinHeader_2x02_P2.54mm_Vertical | J4 |
| 1 | Power bus | PinHeader_2x05_P2.54mm_Vertical | J5 |
| 1 | Mech support | PinHeader_2x05_P2.54mm_Vertical | J6 |
| 2 | MountingHole | Mounting_Hole_0.2in | H1, H2 |
| 1 | SRD-05VDC-SL-C | Relay_SPDT_Songel-15x19mm | K1 |
| 1 | MT3608_2-24V_2A | MT3608_2-24V_2A | PS1 |
| 1 | XPJ-01B_5V_10W | Converter_ACDC_5V_10W_XPJ-01B | PS2 |
| 3 | LED | LED_D3.0mm | D1, D2, D3 |
| 1 | 1k2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 390 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 330 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | 240 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4 |
| 1 | 150 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5 |
PSU2 design files
The KiCad project lives in the KALTCHUK/Z80_Modular_Computer repository on GitHub; these links point at the commit this page was built from.
PSU2: common questions
How big is the PSU2 PCB?
The PSU2 measures 99.7 × 69.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the PSU2?
20 components, from 17 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 PSU2 design files?
From the KALTCHUK/Z80_Modular_Computer 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 PSU2 design in my own project?
The repository has no license, so all rights stay with KALTCHUK. Use it as a reference, and ask the author before reusing the design.
More boards in Z80_Modular_Computer
AVR/ArduinoTTY
99.7 × 69.9 mm43 parts2LNo license94
I2C
99.7 × 69.9 mm31 parts2LNo license94
EProg (discrete part)
100.3 × 69.9 mm31 parts2LNo license94
CPU
99.7 × 69.9 mm29 parts2LNo license94
MEM
99.7 × 69.9 mm28 parts2LNo license94
FLASHv2
99.7 × 69.9 mm16 parts2LNo license94
AVR/ArduinoEProg
100 × 71.1 mm12 parts2LNo license94
Backplane v2
77.5 × 99.1 mm10 parts2LNo license94
Protoboardv2
99.7 × 69.9 mm9 parts2LNo license94
Similar boards
OpenTendo
Redherring32
196.3 × 118.7 mm93 parts2LTAPR-OHL-1.0850
MCL86jr
MicroCoreLabs
56.1 × 57.1 mm66 parts4LNo license532
24pin flex interposer
Wren6991
29 × 32 mm3 parts2LNo license508
Sram dev board
50 × 50 mm12 parts2LNo license508
TRS-80 Color Computer 3
baldengineer
280 × 155.3 mm204 parts2LCC-BY-4.0442
Commodore Plus 4
284.7 × 158.9 mm212 parts2LCC-BY-4.0442