EProg (discrete part)
About the EProg (discrete part) PCB
EProg (discrete part) is an open source PCB design by KALTCHUK, published on GitHub. It is a 2-layer board measuring 100.3 × 69.9 mm, with 31 components from 12 distinct parts.
Other key parts include the LM317_TO39 and LM7812_TO220. By type, the board carries 14 resistors, 9 transistors, 3 connectors, 3 capacitors and 2 ICs.
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 EProg (discrete part)
EProg (discrete part) bill of materials (BOM)
31 components, 12 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM317_TO39 | TO-220-3_Vertical | U1 |
| 1 | LM7812_TO220 | TO-220-3_Vertical | U2 |
| 5 | BC547 | TO-92_Inline | Q1, Q3, Q5, Q7, Q8 |
| 4 | BC328 | TO-92_Inline | Q2, Q4, Q6, Q9 |
| 1 | Conn_01x04_Male | PinHeader_1x04_P2.54mm_Horizontal | J1 |
| 2 | Conn_01x03_Male | PinHeader_1x03_P2.54mm_Horizontal | J2, J3 |
| 1 | 10uF | CP_Radial_D5.0mm_P2.50mm | C1 |
| 2 | 1uF | CP_Radial_D5.0mm_P2.50mm | C2, C3 |
| 5 | 82k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R5, R8, R10, R12 |
| 4 | 12k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R6, R9, R13 |
| 4 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R7, R11, R14 |
| 1 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4 |
EProg (discrete part) 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.
EProg (discrete part): common questions
How big is the EProg (discrete part) PCB?
The EProg (discrete part) measures 100.3 × 69.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the EProg (discrete part)?
31 components, from 12 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 EProg (discrete part) 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 EProg (discrete part) 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.
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