4 layers218.4 × 114 mm
Video v2.0
ksr/YACC1-D
YACC1 (Yet Another Custom CPU) - definitive tree: hardware, firmware, software, tools and docs for the hand-built TTL computer. Supersedes ksr/YACC1-2020.
121 parts
2 layers254 × 134.1 mm
Vdm2021
physicsrob/vdm11VDM-1 2021 Reproduction
- Size
- 254 × 134.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 177
- Nets
- 252
- Pads
- 1,143
- Tracks, vias
- 4,586, 491
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 19 Jun 2021
- Updated
- 21 Nov 2021
Overview
Vdm2021 is an open-source printed circuit board by physicsrob, from the physicsrob/vdm1 repository on GitHub. It is a 2-layer board of 254 × 134.1 mm with 177 parts on 252 nets, routed with 4,586 tracks and 491 vias.
It is built around the 74LS367PC, DM8131N and 74LS163APC, with the 74LS109PC, 74LS157PC and 74LS175PC among its other parts. Its parts include 64 capacitors, 50 resistors, 50 ICs, 3 diodes and 3 connectors.
Main components
12
74LS367PC
PDIP-16Buffers, Drivers, Receivers, TransceiversTexas InstrumentsDM8131N
DIP-160℃~+70℃ 16mA 4.75V~5.25V 400uA 6 74mA DM8131 Push-pull Schmitt trigger、TTL Compatible CMOS Short-Circuit Protection Unidirectional DIP-16 Buffers, Drivers, Receivers, Transceivers ROHSRochester Electronics, LLCBuffers, Drivers, Receivers, Transceivers74LS163APC
DIP-164 74LS Programmable divide ratio、Reset function、Cascade counter、Synchronous counting DIP-16 Counters, Dividers ROHSTexas InstrumentsCounters, Dividers74LS109PC
-0ns 0℃~+70℃ 2 20ns、30ns 25MHz 25ns@5V,15pF、35ns@5V,50pF 4.75V~5.25V 400uA 74LS Series 8mA 8mA Asynchronous Complementary JK-Type Rising Edge Set and Reset - Flip FlopsTexas InstrumentsFlip Flops74LS157PC
PDIP-160℃~+70℃ 4.75V~5.25V Single Supply PDIP-16 Signal Switches, Multiplexers, Decoders ROHSTexas InstrumentsSignal Switches, Multiplexers, Decoders74LS175PC
PDIP-160℃~+70℃ 1 10ns 18mA 25ns@5V,15pF 30MHz 4 4.75V~5.25V 5ns 74LS Series Asynchronous Complementary type D-Type Reset Rising Edge PDIP-16 Flip Flops ROHSTexas InstrumentsFlip Flops
74LS00SC
-0℃~+70℃ 15ns@5V,50pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA NAND Gate - Logic Gates ROHSTexas InstrumentsLogic Gates
74LS04PC
PDIP-140℃~+70℃ 4.75V~5.25V 6 6.6mA 74LS PDIP-14 InvertersonsemiInverters74LS10PC
PDIP-140℃~+70℃ 3 3.3mA 4.75V~5.25V 74LS Series NAND Gate PDIP-14 Logic GatesonsemiLogic Gates74LS02PC
DIP-140℃~+70℃ 15ns@5V,15pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA 8mA NOR Gate DIP-14 Logic Gates ROHSonsemiLogic Gates74LS132P-E
DIP-14-20℃~+75℃ 2 2.7V 22ns@5V,15pF 4 4.75V~5.25V 400uA 500mV 74LS 8mA NAND Gate Schmitt trigger DIP-14 Logic Gates ROHSRenesas ElectronicsLogic Gates74LS20P-E
DIP-14-20℃~+75℃ 15ns@5V,15pF 2 2.7V 2V 4 4.75V~5.25V 400mV、500mV 400uA 74LS 800mV 8mA NAND Gate DIP-14 Logic Gates ROHSRenesas ElectronicsLogic Gates
README
README.mdThis project contains information on the original VDM-1 (Video Display Module) board manufactured by Processor Technologies, as well as a reproduction board referred to as the VDM-2021.
Visit the docs Here
Parts
177| Qty | Value | Footprint | References |
|---|---|---|---|
| 48 | .1uf | Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm | C2, C3, C10, C11, C12, C13, C14, C15, C16, C17, C18, C22, C23, C24, C26, C32 +32 |
| 29 | 1.5K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R10, R12, R13, R14, R15, R20, R25, R26, R27, R28, R29, R30, R31, R32, R36 +13 |
| 8 | 2102 | Package_DIP:DIP-16_W7.62mm_Socket | IC41, IC42, IC43, IC44, IC45, IC46, IC47, IC48 |
| 5 | 8.2K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R22, R34, R35, R38, R51 |
| 4 | 1uf | Capacitor_THT:CP_Radial_Tantal_D6.0mm_P2.50mm | C4, C7, C8, C9 |
| 4 | 74LS163 | Package_DIP:DIP-16_W7.62mm_Socket | IC2, IC20, IC21, IC22 |
| 3 | .1uF | Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm | C20, C31, C34 |
| 3 | 39K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R8, R37, R39 |
| 3 | 74LS109 | Package_DIP:DIP-16_W7.62mm_Socket | IC10, IC13, IC16 |
| 3 | 74LS157 | Package_DIP:DIP-16_W7.62mm_Socket | IC23, IC24, IC28 |
| 3 | 74LS175 | Package_DIP:DIP-16_W7.62mm_Socket | IC5, IC6, IC17 |
| 2 | 0.001uf | Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm | C27, C28 |
| 2 | 100 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3 |
| 2 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D2, D3 |
| 2 | 3.3M | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R21, R24 |
| 2 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R16, R17 |
| 2 | 4029 | Package_DIP:DIP-16_W7.62mm_Socket | IC26, IC27 |
| 2 | 4042 | Package_DIP:DIP-16_W7.62mm_Socket | IC31, IC32 |
| 2 | 50K | Potentiometer_THT:Potentiometer_ACP_CA9-H2,5_Horizontal | R33, R50 |
| 2 | 74LS00 | Package_DIP:DIP-14_W7.62mm_Socket | IC15, IC35 |
| 2 | 74LS04 | Package_DIP:DIP-14_W7.62mm_Socket | IC19, IC36 |
| 2 | 74LS08 | Package_DIP:DIP-14_W7.62mm_Socket | IC33, IC34 |
| 2 | 74LS10 | Package_DIP:DIP-14_W7.62mm_Socket | IC9, IC40 |
| 2 | 74LS367 | Package_DIP:DIP-16_W7.62mm_Socket | IC38, IC39 |
| 2 | Jumper_2_Open | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4, J5 |
| 1 | .001uF | Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm | C30 |
| 1 | .001uf | Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm | C21 |
| 1 | .01uF | Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm | C25 |
| 1 | 1.5k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R19 |
| 1 | 100K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R23 |
| 1 | 100uf | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 10pf | Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mm | C19 |
| 1 | 15uf | Capacitor_THT:CP_Radial_Tantal_D6.0mm_P2.50mm | C39 |
| 1 | 1N5225B | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 200 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R11 |
| 1 | 2N2907 | Package_TO_SOT_THT:TO-18-3 | Q1 |
| 1 | 4001 | Package_DIP:DIP-14_W7.62mm_Socket | IC30 |
| 1 | 4049 | Package_DIP:DIP-16_W7.62mm_Socket | IC25 |
| 1 | 680 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 680pf | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C29 |
| 1 | 7406 | Package_DIP:DIP-14_W7.62mm_Socket | IC1 |
| 1 | 74166 | Package_DIP:DIP-16_W7.62mm_Socket | IC3 |
| 1 | 74LS02 | Package_DIP:DIP-14_W7.62mm_Socket | IC14 |
| 1 | 74LS132 | Package_DIP:DIP-14_W7.62mm_Socket | IC18 |
| 1 | 74LS138 | Package_DIP:DIP-16_W7.62mm_Socket | IC11 |
| 1 | 74LS20 | Package_DIP:DIP-14_W7.62mm_Socket | IC7 |
| 1 | 74LS86 | Package_DIP:DIP-14_W7.62mm_Socket | IC12 |
| 1 | 75 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 8836 | Package_DIP:DIP-14_W7.62mm_Socket | IC37 |
| 1 | 93L16 | Package_DIP:DIP-16_W7.62mm_Socket | IC8 |
| 1 | AddressSelect | vdm2021:ADDR_SELECT | ADDR1 |
| 1 | Conn_Coaxial | vdm2021:bnc-5-16345033 | VIDEO |
| 1 | Crystal | Crystal:Crystal_HC50_Horizontal | Y1 |
| 1 | DM8131 | Package_DIP:DIP-16_W7.62mm_Socket | IC29 |
| 1 | Heat Sink | vdm2021:heatsink | HEAT |
| 1 | Jumper_3_Open | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | L7805 | vdm2021:TO-220-3_Horizontal_TabDown | IC49 |
| 1 | L7812 | Package_TO_SOT_THT:TO-92_Inline_Wide | IC50 |
| 1 | MCM6575 | Package_DIP:DIP-24_W15.24mm | IC4 |
| 1 | S100 | vdm2021:S100_MALE | S100 |
| 1 | SW_DIP_x06 | Button_Switch_THT:SW_DIP_SPSTx06_Slide_9.78x17.42mm_W7.62mm_P2.54mm | SW1 |
Questions
How big is the Vdm2021 PCB?
It measures 254 × 134.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Vdm2021 use?
177 parts, built around the 74LS367PC, DM8131N, 74LS163APC and 74LS109PC. 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 Vdm2021 KiCad files?
From the physicsrob/vdm1 repository on GitHub, at the commit this page was made from: the board is kicad/vdm2021.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Vdm2021 design in my own project?
Its repository states no licence, so its author keeps all rights: ask physicsrob before reusing the design.
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