Screen
About the Screen PCB
Screen is an open source PCB design by benanderman, published on GitHub under the MIT license. It is a 2-layer board measuring 65.3 × 99.4 mm, with 452 components from 5 distinct parts.
Other key parts include the C2682068. By type, the board carries 201 resistors, 200 diodes, 25 ICs, 25 capacitors and 1 connector.
From the project
An 8-bit CPU, made with TTL chips on custom, modular PCBs. Includes board designs, and Arduino code to program its instruction set and programs.
This is an 8-bit computer project, inspired by Ben Eater's 8-bit breadboard computer. It's made out of modular PCBs that plug into each other, and contain mostly 74HC-series chips (original 74LS). It runs code from an EEPROM (so it's only programmable from a computer), and has separate memory. It's meant to display what's happening, when running on a 555-timer or manually stepping, but also be capable enough to implement some sort of game, when using an oscillator as a clock.
Main components on the Screen
Screen bill of materials (BOM)
452 components, 5 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 25 | C2682068 74HC595 | RWN0016A | U1, U2, U3, U4, U5, U6, U7, U8 +17 |
| 1 | CONN_01X12 Conn_01x12 | PinHeader_1x12_P2.54mm_Vertical | J1 |
| 200 | C965793 LED | LED_0402_1005Metric | D1, D2, D3, D4, D5, D6, D7, D8 +192 |
| 25 | C307331 0.1uF | C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C7, C8 +17 |
| 201 | C25744 10k | R_0402_1005Metric | R1, R2, R3, R4, R5, R6, R7, R8 +193 |
Screen design files
The KiCad project lives in the benanderman/spork-8 repository on GitHub; these links point at the commit this page was built from.
- LayoutScreen/Screen.kicad_pcb
- SchematicScreen/Screen.kicad_sch
- BOMScreen/Screen-BOM.csv
Screen: common questions
How big is the Screen PCB?
The Screen measures 65.3 × 99.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Screen?
452 components, from 5 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 Screen design files?
From the benanderman/spork-8 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 Screen design in my own project?
Yes, under the terms of its MIT license, which benanderman chose for the repository.
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Counter
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ALU
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Clock
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IO
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Bus
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Shift
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Register
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RAM
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Input
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