HardLabs

Reg

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

Reg PCB layout, top view — open source board by fread

About the Reg PCB

Reg is an open source PCB design by fread, published on GitHub. It is a 2-layer board measuring 104.1 × 113 mm, with 51 components from 8 distinct parts.

By type, the board carries 16 resistors, 12 relays, 9 diodes, 8 capacitors and 6 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…

Reg bill of materials (BOM)

51 components, 8 distinct parts.

QtyPartRefs
4
BHR-10-VUA
J1, J2, J3, J4
1
Conn_01x02
J5
1
Conn_02x02_Odd_Even
J6
12
J104D2C12VDC.15S
K1, K2, K3, K4, K5, K6, K7, K8 +4
9
SMAJ14CA
D1, D2, D3, D4, D5, D6, D7, D8 +1
8
470uF
C1, C2, C3, C4, C5, C6, C7, C8
8
680R
R1, R2, R3, R4, R5, R6, R7, R8
8
47R
R9, R10, R11, R12, R13, R14, R15, R16

Reg design files

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

Reg: common questions

How big is the Reg PCB?

The Reg measures 104.1 × 113 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Reg?

51 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the Reg 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 Reg 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