HardLabs

Switch

fread·visvitalis·new-parts/switch/switch.kicad_pcb

Switch PCB layout, top view — open source board by fread
Simulate this board

About the Switch PCB

Switch is an open source PCB design by fread, published on GitHub. It is a 2-layer board measuring 63.5 × 38.1 mm, with 26 components from 5 distinct parts.

By type, the board carries 8 switches, 8 diodes, 8 resistors and 2 connectors.

From the project

A very simple modular relay computer

This project contains plans for PCB modules to build a relay processor, complete with assembler and emulator. While the actual processor is made out of relays (and the occasional diode), memory is emulated by ESP-based boards. Their firmware also provides for loading programs and monitoring memory contents via a USB-TTY connection.

Processors are, fundamentally, not that complicated. At any rate, you can build one out of much less than the billions of transistors required for a desktop CPU. And it's a worthwhile endeavour, too, being actually able to understand a whole processor, albeit a…

Switch bill of materials (BOM)

26 components, 5 distinct parts.

QtyPartRefs
1
Conn_02x02_Odd_Even
J1
1
BHR-10-VUA
J2
8
SW_SPDT
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8
8
151053GS03000
D1, D2, D3, D4, D5, D6, D7, D8
8
750R
R1, R2, R3, R4, R5, R6, R7, R8

Switch design files

The KiCad project lives in the fread/visvitalis repository on GitHub; these links point at the commit this page was built from.

Switch: common questions

How big is the Switch PCB?

The Switch measures 63.5 × 38.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Switch?

26 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the Switch design files?

From the fread/visvitalis repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Switch design in my own project?

The repository has no license, so all rights stay with fread. Use it as a reference, and ask the author before reusing the design.

More boards in visvitalis