4 layers25.9 × 35.6 mm
2 layers57.1 × 143.5 mm
Mem decoder
magik6k/breadv3Code bits of the TTL breadbord RISC-V
- Size
- 57.1 × 143.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 110
- Nets
- 153
- Pads
- 547
- Tracks, vias
- 1,874, 192
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 26 Oct 2021
- Updated
- 27 May 2023
Overview
Mem decoder is an open-source printed circuit board by magik6k, from the magik6k/breadv repository on GitHub. It is a 2-layer board of 57.1 × 143.5 mm with 110 parts on 153 nets, routed with 1,874 tracks and 192 vias.
It is built around the 74LS30PC and 74LS32SC. Its parts include 64 resistors, 15 ICs, 10 connectors, 4 capacitors and 3 diodes.
Main components
2Parts
110| Qty | Value | Footprint | References |
|---|---|---|---|
| 64 | 1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23 +48 |
| 8 | 74LS08 | Package_DIP:DIP-14_W7.62mm | U4, U5, U7, U8, U10, U11, U13, U14 |
| 8 | Conn_02x08_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | Jbase1, Jbase2, Jbase3, Jbase4, Jmsk1, Jmsk2, Jmsk3, Jmsk4 |
| 6 | Conn_01x04_Male | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J~{e}in1, J~{e}in2, J~{e}out1, J~{w}in1, J~{w}in2, J~{w}out1 |
| 5 | Conn_01x02_Male | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1, J2, J3, J4, J6 |
| 4 | 74LS30 | Package_DIP:DIP-14_W7.62mm | U6, U9, U12, U15 |
| 4 | C | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2, C3, C4 |
| 4 | Conn_01x08_Female | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J7, J8, J9, J10 |
| 3 | 74LS32 | Package_DIP:DIP-14_W7.62mm | U1, U2, U3 |
| 3 | LED | LED_THT:LED_D5.0mm | D1, D2, D3 |
| 1 | Conn_01x01_Male | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J5 |
Questions
How big is the Mem decoder PCB?
It measures 57.1 × 143.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mem decoder use?
110 parts, built around the 74LS30PC and 74LS32SC. 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 Mem decoder KiCad files?
From the magik6k/breadv repository on GitHub, at the commit this page was made from: the board is pcbs/mem-decoder/mem-decoder.kicad_pcb and its schematic pcbs/8view-out/8view-out.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mem decoder design in my own project?
Its repository states no licence, so its author keeps all rights: ask magik6k before reusing the design.
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