2 layers
ClassicsController
LegacyPinball/ClassicsController
Breathe new life into your classic Williams pinball machine
43 parts1
2 layers199.4 × 106.2 mm
- Size
- 199.4 × 106.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 194
- Nets
- 327
- Pads
- 1,214
- Tracks, vias
- 6,210, 763
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 8 Apr 2025
- Updated
- 23 Jun 2026
Overview
Alu is an open-source printed circuit board by joshop, from the joshop/risc16asm repository on GitHub. It is a 2-layer board of 199.4 × 106.2 mm with 194 parts on 327 nets, routed with 6,210 tracks and 763 vias.
It is built around the 74AHC541D, 74HC86D and SN74CBT16233DGGR, with the 74HC00D and 74HC04D among its other parts. Its parts include 61 resistors, 61 diodes, 39 ICs, 27 capacitors and 6 connectors.
Main components
5
74AHC541D
SO-20-300mil-40℃~+125℃ 1 2V~5.5V 74AHC 8 80uA 8mA 8mA 9ns@5.5V,50pF Schmitt trigger Tri-State Unidirectional SO-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffer/Driver/Transceiver
74HC86D
SO-14-40℃~+125℃ 1.5V~4.2V 20ns@6V,50pF 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 74HC Series XOR Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
SN74CBT16233DGGR
TSSOP-56-6.1mm-40℃~+85℃ 16 250ps 2:1 4.75V~5.25V 5.2ns 5.3ns 7Ω TSSOP-56-6.1mm Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers74HC00D
SOP-14-40℃~+125℃ 1.5V、3.15V、4.2V 1.9V、3.7V、5.9V 100mV、400mV、400mV 2 2V~6V 4 40uA 5.2mA 5.2mA 500mV~1.8V 74HC Series 7ns@6V,50pF NAND Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates74HC04D
SOP-14-40℃~+125℃ 1 1.5V~4.2V 1.9V、3.7V、5.2V 100mV、400mV、400mV 14ns@6V,50pF 2V~6V 2uA 5.2mA 5.2mA 500mV~1.8V 6 74HC SOIC-14 Inverters ROHSNexperiaInverters
Parts
194| Qty | Value | Footprint | References |
|---|---|---|---|
| 61 | 1k | Resistor_SMD:R_0603_1608Metric | R1, R2, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23 +45 |
| 61 | LED | LED_SMD:LED_0603_1608Metric | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +45 |
| 26 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C22, C23, C24 +10 |
| 16 | 74HC86 | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U1, U2, U3, U4, U5, U6, U7, U8, U23, U24, U25, U26, U27, U28, U29, U30 |
| 8 | 74AHC541 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U31, U32, U33, U34, U35, U36, U37, U38 |
| 6 | SN74CBT16233DGGR | footprints:DGG56 | U13, U14, U15, U16, U17, U18 |
| 4 | 74HC00 | Package_SO:SO-14_3.9x8.65mm_P1.27mm | U19, U20, U21, U22 |
| 4 | 74LS283 | Package_SO:SO-16_3.9x9.9mm_P1.27mm | U9, U10, U11, U12 |
| 3 | Conn_01x16 | Connector_PinSocket_2.54mm:PinSocket_1x16_P2.54mm_Horizontal | J1, J2, J3 |
| 1 | 74HC04 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U39 |
| 1 | C | Capacitor_SMD:C_0603_1608Metric | C21 |
| 1 | Conn_01x02 | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Horizontal | J6 |
| 1 | Conn_01x04 | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Horizontal | J5 |
| 1 | Conn_01x08 | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Horizontal | J4 |
Questions
How big is the Alu PCB?
It measures 199.4 × 106.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Alu use?
194 parts, built around the 74AHC541D, 74HC86D, SN74CBT16233DGGR and 74HC00D. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Alu KiCad files?
From the joshop/risc16asm repository on GitHub, at the commit this page was made from: the board is risc16/risc16eda/alu/alu.kicad_pcb and its schematic risc16/risc16eda/alu/alu.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Alu design in my own project?
Its repository states no licence, so its author keeps all rights: ask joshop before reusing the design.
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