2 layers90.9 × 84.6 mm
Valhalla ufh cpu SMT
csdexter/valhalla
Version-controlled material related to the Valhalla project
71 partsGPL-3.0
2 layers206.2 × 99.6 mm
Valhalla MOD XVR 4IO
csdexter/valhallaVersion-controlled material related to the Valhalla project
- Size
- 206.2 × 99.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 134
- Nets
- 139
- Pads
- 403
- Tracks, vias
- 462, 0
- Pours
- 17
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 6 Feb 2024
- Updated
- 13 Apr 2026
Overview
Valhalla MOD XVR 4IO is an open-source printed circuit board by csdexter, from the csdexter/valhalla repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 206.2 × 99.6 mm with 134 parts on 139 nets, routed with 462 tracks and 0 vias.
It is built around the 74LS125DC, 74HC123D and 74HC14, with the 74HC74D, IRLZ44N and KBP204G among its other parts. Its parts include 35 resistors, 35 connectors, 28 diodes, 8 capacitors and 8 ICs.
Main components
674LS125DC
-0℃~+70℃ 1 10ns@5.5V,50pF 15mA 18mA 24mA 4 4.5V~5.5V 74LS Power-off isolation、Output enable Tri-State Unidirectional - Buffers, Drivers, Receivers, TransceiversTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
74HC123D
SOIC-16-40℃~+125℃ 160uA 2 2V~6V 5.2mA 5.2mA 65ns 74HC Monostable Schmitt trigger SOIC-16 Monostable Multivibrators ROHSNexperiaMonostable Multivibrators
74HC14
SOP-14-40℃~+85℃ 1.9V、3.98V、4.4V、5.48V、5.9V 100mV、260mV、260mV 20uA 25ns@4.5V,50pF 2V~6V 6 74HC Noise suppression function Schmitt trigger SOP-14 Inverters ROHSJSMSEMIInverters74HC74D
SOIC-14-40℃~+125℃ 1 15ns 2 2V~6V 3.5pF 37ns@6V,50pF 3ns、3ns、3ns 40uA 5.2mA 5.2mA 74HC Series 82MHz Asynchronous Complementary D-Type Rising Edge Set and Reset SOIC-14 Flip Flops ROHSNexperiaFlip Flops
IRLZ44N
TO-22055V 47A N-Channel HEXFET® Power MOSFETInfineon TechnologiesUncategorised
KBP204G
KBP-65℃~+150℃@(Tj) 1.1V@2A 2A 400V 5uA@400V 65A Single-Phase Rectifier KBP Bridge Rectifiers ROHSDiodes IncorporatedBridge Rectifiers
README
README.mdValhalla
This repository contains version-controlled material related to operation Valhalla. The documentation counterparts are currently stored in Google Drive.
Parts
134| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 1N4001 | Diode_THT:D_DO-41_SOD81_P5.08mm_Vertical_KathodeUp | D3, D4, D5, D6, D7, D8, D9, D10 |
| 6 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R9, R10, R14, R16, R17, R18 |
| 6 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R13, R15, R32, R33, R34, R35 |
| 6 | 40K/20K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R1, R2, R3, R4, R7, R8 |
| 6 | 75V/62V | Diode_THT:D_DO-41_SOD81_P5.08mm_Vertical_KathodeUp | D17, D18, D19, D20, D23, D24 |
| 6 | FIM_I | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J25, J26, J27, J28, J30, J33 |
| 4 | 100K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R19, R20, R25, R26 |
| 4 | 10K/4.7K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R21, R22, R23, R24 |
| 4 | 4N35 | Package_DIP:DIP-6_W7.62mm | U1, U2, U4, U5 |
| 4 | FIM_I | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J37, J38, J39, J40 |
| 4 | ~{WD_DB} | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP3, JP4, JP5, JP6 |
| 3 | 100nF | Capacitor_THT:C_Rect_L4.0mm_W2.5mm_P2.50mm | C6, C7, C8 |
| 3 | FIM_E | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J6, J7, J8 |
| 2 | 100R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R11, R12 |
| 2 | 100nF | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C3, C4 |
| 2 | 10V | Diode_THT:D_DO-35_SOD27_P5.08mm_Vertical_KathodeUp | D21, D22 |
| 2 | 10nF | Capacitor_THT:C_Disc_D11.0mm_W5.0mm_P7.50mm | C1, C2 |
| 2 | 1N5822 | Diode_THT:D_DO-201AD_P5.08mm_Vertical_KathodeUp | D11, D12 |
| 2 | 275V/150V | Varistor:RV_Disc_D7mm_W3.4mm_P5mm | RV1, RV2 |
| 2 | 27V | Diode_THT:D_DO-41_SOD81_P5.08mm_Vertical_KathodeUp | D1, D2 |
| 2 | 2N3904 | Package_TO_SOT_THT:TO-92_Wide | Q3, Q4 |
| 2 | 2N3906 | Package_TO_SOT_THT:TO-92_Wide | Q5, Q6 |
| 2 | 390R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R27, R28 |
| 2 | 3K3 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R5, R6 |
| 2 | 4K7 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R29, R30 |
| 2 | BUS | MountingHole:MountingHole_3.2mm_M3_ISO7380 | H3, H4 |
| 2 | F1A | Fuse:Fuseholder_Clip-5x20mm_Bel_FC-203-22_Lateral_P17.80x5.00mm_D1.17mm_Horizontal | F1, F2 |
| 2 | FAULT | LED_THT:LED_D3.0mm | D15, D16 |
| 2 | FIM_E | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J4, J5 |
| 2 | GLM_B | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J18, J21 |
| 2 | GLM_B | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J19, J20 |
| 2 | GLM_F | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J14, J15 |
| 2 | GLM_F | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J16, J17 |
| 2 | IRLZ44N | Package_TO_SOT_THT:TO-220-3_Vertical | Q1, Q2 |
| 2 | KBP204G | PCM_EasyEDA:Diode_Bridge_KBP_14.5x3.5x10.0mm_P3.81mm | D13, D14 |
| 2 | UI | MountingHole:MountingHole_3.2mm_M3_ISO7380 | H1, H2 |
| 2 | WDM_E | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J34, J35 |
| 2 | WDM_I | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J22, J23 |
| 2 | ~{DEBOUNCE} | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1, JP2 |
| 1 | 3.3uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C5 |
| 1 | 470K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R31 |
| 1 | 74HC123 | Package_DIP:DIP-16_W7.62mm | U8 |
| 1 | 74HC14 | Package_DIP:DIP-14_W7.62mm | U3 |
| 1 | 74HC74 | Package_DIP:DIP-14_W7.62mm | U6 |
| 1 | 74LS125 | Package_DIP:DIP-14_W7.62mm | U7 |
| 1 | FIELD | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-6-5.08_1x06_P5.08mm_Horizontal | J2 |
| 1 | GPIO | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-4-2.54_1x04_P2.54mm_Horizontal | J3 |
| 1 | POWER | PCM_EasyEDA:Molex_KK-254_A-7478-06A_1x06_P2.54mm_Horizontal | J1 |
| 1 | TM | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Horizontal | J24 |
| 1 | TM_0 | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Horizontal | J31 |
| 1 | TM_1 | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Horizontal | J32 |
| 1 | WDM_E | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J36 |
| 1 | WDM_I | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J29 |
| 1 | ~{GPIO_0} | LED_THT:LED_D3.0mm_Horizontal_O1.27mm_Z2.0mm | D25 |
| 1 | ~{GPIO_1} | LED_THT:LED_D3.0mm_Horizontal_O3.81mm_Z6.0mm | D26 |
| 1 | ~{GPIO_2} | LED_THT:LED_D3.0mm_Horizontal_O1.27mm_Z2.0mm | D27 |
| 1 | ~{GPIO_3} | LED_THT:LED_D3.0mm_Horizontal_O3.81mm_Z6.0mm | D28 |
More from csdexter/valhalla
10- 2 layers99.6 × 99.6 mm
Valhalla MOD PSU
csdexter/valhalla
Version-controlled material related to the Valhalla project
55 partsGPL-3.0 - 2 layers76.2 × 50.8 mm
Valhalla MOD XVR OT
csdexter/valhalla
Version-controlled material related to the Valhalla project
55 partsGPL-3.0 - 2 layers99.6 × 64.3 mm
Valhalla ufh sensor SMT
csdexter/valhalla
Version-controlled material related to the Valhalla project
54 partsGPL-3.0 - 2 layers76.2 × 50.8 mm
Valhalla MOD CPU ATMEGA
csdexter/valhalla
Version-controlled material related to the Valhalla project
31 partsGPL-3.0 - 2 layers76.2 × 50.8 mm
Valhalla MOD XVR RS485
csdexter/valhalla
Version-controlled material related to the Valhalla project
20 partsGPL-3.0 - 2 layers76.2 × 50.8 mm
Valhalla MOD BPL SEP
csdexter/valhalla
Version-controlled material related to the Valhalla project
16 partsGPL-3.0 - 2 layers76.2 × 50.8 mm
Valhalla MOD XVR RS232
csdexter/valhalla
Version-controlled material related to the Valhalla project
16 partsGPL-3.0 - 2 layers76.2 × 50.8 mm
Valhalla MOD ICP
csdexter/valhalla
Version-controlled material related to the Valhalla project
6 partsGPL-3.0 - 2 layers76.2 × 50.8 mm
Valhalla MOD- TEMPLATE
csdexter/valhalla
Version-controlled material related to the Valhalla project
5 partsGPL-3.0
Similar boards
- 2 layers101.6 × 61 mm
Bus Extension
SmittyHalibut/RC2014-Bliken-Lights
A Blinken Lights front panel for the RC2014.
102 partsCC0-1.0 - 2 layers219 × 88 mm
- 2 layers155.1 × 156 mm
- 2 layers41.9 × 48.3 mm
- 2 layers
VideoBoard
Cptscorcher/Excallibur-64
A reimagining of the seminal Excalibur 64 Computer
126 partsGPL-3.0 - 2 layers200 × 100 mm
- 2 layers88.9 × 98.4 mm
Kickstart switcher-12up
keirf/pcb-projects
The old Kickstart switcher documentation is here.
197 parts108CC0-1.0 - 4 layers69 × 74 mm
Questions
How big is the Valhalla MOD XVR 4IO PCB?
It measures 206.2 × 99.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Valhalla MOD XVR 4IO use?
134 parts, built around the 74LS125DC, 74HC123D, 74HC14 and 74HC74D. 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 Valhalla MOD XVR 4IO KiCad files?
From the csdexter/valhalla repository on GitHub, at the commit this page was made from: the board is hardware/eda/VLM-XVG/valhalla-MOD-XVR_4IO.kicad_pcb and its schematic hardware/eda/ESS-DOC/valhalla-pv.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Valhalla MOD XVR 4IO design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).