2 layers94 × 94 mm
2 layers130.8 × 101.6 mm
HowTo make a CPU from transistors
- Size
- 130.8 × 101.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 9
- Pads
- 69
- Tracks, vias
- 161, 16
- Pours
- 51
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Apr 2025
- Updated
- 6 May 2025
Overview
XOR is an open-source printed circuit board by csBlueChip, from the csBlueChip/CPU_HowTo repository on GitHub, published under the MIT licence. It is a 2-layer board of 130.8 × 101.6 mm with 29 parts on 9 nets, routed with 161 tracks and 16 vias.
Its parts include 14 transistors, 8 resistors and 4 connectors.
README
README.mdIdeally:
- Grab a copy of Notepad++
- Load the provided language file
- Read the HowTo
Sub-optimally:
- Read the HowTo without the syntax highlighing
Alternatively:
- Port the language file to your favourite text editor
~~~ ( SECTION HEADING ) =====
~-~ SUBSECTION HEADING ~-~
(o) DIAGRAM TITLE
! ASCII Art
`CODE`
"QUOTED STRING"
<~ SPOILER ~>
{NAME}
!!!ALERT!!!
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 2N7000 | Package_TO_SOT_THT:TO-92_Inline | Q5, Q6, Q7, Q8, Q9, Q10, Q11 |
| 7 | 2N7000 | Package_TO_SOT_SMD:SOT-23 | Q15, Q16, Q17, Q18, Q19, Q20, Q21 |
| 4 | Conn_01x02_Pin | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J1, J2, J3, J4 |
| 4 | R | Resistor_SMD:R_1206_3216Metric | R16, R17, R18, R19 |
| 4 | R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6, R7, R8, R9 |
| 3 | Conn_01x01_Pin | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | A1, B1, Y1 |
More from csBlueChip/CPU_HowTo
5- 2 layers69.9 × 74.9 mm
OR/(N)OR.kicad_pcb.jpg?size=s&soon)
- 2 layers50.8 × 50.8 mm
- 2 layers58.4 × 40.6 mm
- 2 layers40.6 × 40.6 mm
Similar boards
- 2 layers52.3 × 10.5 mm
StackLink
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software
29 parts5.1kGPL-3.0 - 2 layers56 × 20 mm
HallEffectXY Endstop
VoronDesign/Voron-Hardware
Cool Hardware designed by the Voron Design group
29 parts1.1kGPL-3.0 - 2 layers50 × 23.2 mm
Analog
hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
29 parts1kGPL-3.0 - 2 layers16.8 × 13.6 mm
E Fidget Lite
hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!
29 parts915 - 2 layers85 × 12.5 mm
TERES PCB3-TOUCH BTN Rev.A
OLIMEX/DIY-LAPTOP
Do It Yourself Open Source Hardware and Software Modular Hacker's Friendly Laptop
29 parts578Apache-2.0 - 2 layers33.7 × 97.8 mm
HAN ESP TSS721
UtilitechAS/amsreader-firmware
ESP8266 and ESP32 compatible firmware to read, interpret and publish data to MQTT from smart electrical meters, both DLMS and DSMR is supported
29 parts470 - 2 layers80 × 55 mm
- 2 layers55 × 58 mm
Questions
How big is the XOR PCB?
It measures 130.8 × 101.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the XOR use?
29 parts. 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 XOR KiCad files?
From the csBlueChip/CPU_HowTo repository on GitHub, at the commit this page was made from: the board is KiCAD/XOR/XOR.kicad_pcb and its schematic KiCAD/(N)AND/(N)AND.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the XOR design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).