2 layers206.2 × 99.6 mm
Valhalla MOD XVR 4IO
csdexter/valhalla
Version-controlled material related to the Valhalla project
134 partsGPL-3.0
2 layers76.2 × 50.8 mm
Valhalla MOD CPU ATMEGA
csdexter/valhallaVersion-controlled material related to the Valhalla project
- Size
- 76.2 × 50.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 48
- Pads
- 134
- Tracks, vias
- 254, 32
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 6 Feb 2024
- Updated
- 13 Apr 2026
Overview
Valhalla MOD CPU ATMEGA 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 76.2 × 50.8 mm with 31 parts on 48 nets, routed with 254 tracks and 32 vias.
It is built around the ATMEGA328P-PU. Its parts include 8 resistors, 6 capacitors, 6 diodes, 3 ICs and 2 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdValhalla
This repository contains version-controlled material related to operation Valhalla. The documentation counterparts are currently stored in Google Drive.
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical | R1, R2, R3, R4, R5, R6, R7, R8 |
| 3 | 0.1uF | Capacitor_THT:C_Rect_L4.6mm_W2.0mm_P2.50mm_MKS02_FKP02 | C1, C2, C4 |
| 3 | R | LED_THT:LED_D3.0mm_Horizontal_O1.27mm_Z2.0mm | D1, D2, D5 |
| 3 | R | LED_THT:LED_D3.0mm_Horizontal_O3.81mm_Z6.0mm | D3, D4, D6 |
| 2 | 20pF | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C5, C6 |
| 2 | BUS | MountingHole:MountingHole_3.2mm_M3_ISO7380 | H3, H4 |
| 2 | UI | MountingHole:MountingHole_3.2mm_M3_ISO7380 | H1, H2 |
| 1 | 4.7uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C3 |
| 1 | 7.3728 MHz | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | 74LS06 | Package_DIP:DIP-14_W7.62mm | U2 |
| 1 | 74LS07 | Package_DIP:DIP-14_W7.62mm | U3 |
| 1 | ATmega328P-P | Package_DIP:DIP-28_W7.62mm | U1 |
| 1 | BUS | Connector_PinSocket_2.54mm:PinSocket_2x10_P2.54mm_Vertical | J1 |
| 1 | GPIO | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-8-2.54_1x08_P2.54mm_Horizontal | J2 |
| 1 | RESET | Button_Switch_THT:SW_Tactile_SKHH_Angled | K1 |
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Questions
How big is the Valhalla MOD CPU ATMEGA PCB?
It measures 76.2 × 50.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Valhalla MOD CPU ATMEGA use?
31 parts, built around the ATMEGA328P-PU. 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 CPU ATMEGA KiCad files?
From the csdexter/valhalla repository on GitHub, at the commit this page was made from: the board is hardware/eda/VLM-CP1/valhalla-MOD-CPU_ATMEGA.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 CPU ATMEGA 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).