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2 layers235 × 158.8 mmGigatron, the printed circuit board in 3D

This is a version of the files from https://gigatron.io/ altered to work on a vanilla KiCAD 5.1.6. Changes are minimal in the schematic and PCB, layout has only been changed where dimensions or orientations changed as a…

Size
235 × 158.8 mm
Copper layers
2
Thickness
1.6 mm
Parts
151
Nets
212
Pads
952
Tracks, vias
4,153, 92
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
15 Jul 2020
Updated
13 Mar 2024

Overview

Gigatron is an open-source printed circuit board by flypie, from the flypie/Gigatron repository on GitHub. It is a 2-layer board of 235 × 158.8 mm with 151 parts on 212 nets, routed with 4,153 tracks and 92 vias.

It is built around the 74HCT244D, 74HCT240D and 74HCT153D, with the 74HCT161D, 74HCT157D and 74HCT273D among its other parts. Its parts include 44 capacitors, 39 ICs, 36 diodes, 21 resistors and 4 connectors. It belongs with the computers and single-board computers boards of this library.

Main components

12

README

README.md

This is a version of the files from https://gigatron.io/ altered to work on a vanilla KiCAD 5.1.6. Changes are minimal in the schematic and PCB, layout has only been changed where dimensions or orientations changed as a result of symbol change.

The PCB has been routed with FreeRouter automatically. https://freerouting.org/

The Omega symbol has been removed as it broke the routing software.

No Copyright is claimed and rmeinas was the original creators of Gigatron.

Parts

151
QtyValueFootprintReferences
38.1µCapacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mmC10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25 +22
281N60PDiode_THT:D_A-405_P2.54mm_Vertical_KathodeUpD10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25 +12
974HCT153Package_DIP:DIP-16_W7.62mmU12, U17, U18, U19, U20, U21, U22, U23, U24
674HCT161Package_DIP:DIP-16_W7.62mmU3, U4, U5, U6, U29, U30
52.2kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR3, R6, R7, R10, R19
5LEDLED_THT:LED_D3.0mmD2, D5, D6, D7, D8
474HCT157Package_DIP:DIP-16_W7.62mmU32, U33, U34, U35
4MountingHoleMountingHole:MountingHole_2.7mm_M2.5H1, H2, H3, H4
31k5Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR11, R13, R15
34605X-101-222LFResistor_THT:R_Array_SIP5R4, R5, R8
347pCapacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mmC1, C2, C3
374HCT273Package_DIP:DIP-20_W7.62mmU8, U9, U38
374HCT377Package_DIP:DIP-20_W7.62mmU27, U31, U37
3750Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR12, R14, R16
20.1µCapacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mmC43, C44
21KResistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_VerticalR100, R101
21N60PDiode_THT:D_A-405_P7.62mm_HorizontalD3, D4
268Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR17, R18
274HCT138Package_DIP:DIP-16_W7.62mmU13, U14
274HCT244Package_DIP:DIP-20_W7.62mmU10, U28
274HCT283Package_DIP:DIP-16_W7.62mmU25, U26
11MResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR1
11kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR2
1220µCapacitor_THT:CP_Radial_D8.0mm_P3.50mmC4
127C1024Package_DIP:DIP-40_W15.24mmU7
15.6V/5WDiode_THT:D_DO-15_P12.70mm_HorizontalD1
154819-0519Connector_USB:USB_Micro-B_Wuerth_629105150521J1
16.25MHz/30pFCrystal:Crystal_HC49-U_VerticalY1
174HC595Package_DIP:DIP-16_W7.62mmU39
174HCT04Package_DIP:DIP-14_W7.62mmU1
174HCT139Package_DIP:DIP-16_W7.62mmU11
174HCT240Package_DIP:DIP-20_W7.62mmU15
174HCT32Package_DIP:DIP-14_W7.62mmU16
1750mA/180mohms/60VFuse:Fuse_Littelfuse_395SeriesF1
1A15TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mmA15
1CONN-JACK-STEREO-R/A-3PIN-3.5MMSamacSys_Parts_l:SJ13523NJ2
1DB15_FEMALE_HighDensity_MountingHolesConnector_Dsub:DSUB-15-HD_Female_Horizontal_P2.29x1.98mm_EdgePinOffset3.03mm_Housed_MountingHolesOffset4.94mmJ3
1DB9_MALE_MountingHolesConnector_Dsub:DSUB-9_Female_Horizontal_P2.77x2.84mm_EdgePinOffset4.94mm_Housed_MountingHolesOffset7.48mmJ4
1HM62256BLP-7Package_DIP:DIP-28_W15.24mmU36
1MCP100-450DIPackage_TO_SOT_THT:TO-92L_Inline_WideU2
1R=10kohmsResistor_THT:R_Array_SIP6R9

Questions

How big is the Gigatron PCB?

It measures 235 × 158.8 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Gigatron use?

151 parts, built around the 74HCT244D, 74HCT240D, 74HCT153D and 74HCT161D. 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 Gigatron KiCad files?

From the flypie/Gigatron repository on GitHub, at the commit this page was made from: the board is Kicad/Gigatron.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Gigatron design in my own project?

Its repository states no licence, so its author keeps all rights: ask flypie before reusing the design.

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