HardLabs

Freqctr

mrieker·pdp8v·kicads/freqctr/freqctr.kicad_pcb

Freqctr PCB layout, top view — open source board by mrieker

About the Freqctr PCB

Freqctr is an open source PCB design by mrieker, published on GitHub. It is a 2-layer board measuring 68.6 × 50.8 mm, with 21 components from 6 distinct parts.

By type, the board carries 7 resistors, 5 transistors, 5 diodes, 3 connectors and 1 capacitor.

From the project

PDP-8/V Vacuum Tube PDP-8 implementation

Vacuum tube implementation of PDP-8/V using a Raspberry PI for memory and I/O devices.

Website: https://www.outerworldapps.com/pdp8v

To generate PCBs (can be run from a PC or a RasPI): cd netgen make cd ../modules make << generates unrouted ACL, ALU, MA, PC, RPI, SEQ boards

open each of the above in its directory in the kicads directory ... and route route route!

Freqctr bill of materials (BOM)

21 components, 6 distinct parts.

QtyPartRefs
5
2N3904
Q1, Q2, Q3, Q4, Q5
2
Conn_01x15_Pin
J1, J2
1
Conn_01x03_Pin
J3
5
5082-7750
D1, D2, D3, D4, D5
1
0.1u
C1
7
150
R1, R2, R3, R4, R5, R6, R7

Freqctr design files

The KiCad project lives in the mrieker/pdp8v repository on GitHub; these links point at the commit this page was built from.

Freqctr: common questions

How big is the Freqctr PCB?

The Freqctr measures 68.6 × 50.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Freqctr?

21 components, from 6 distinct parts. The full bill of materials is listed on this page.

Where can I download the Freqctr design files?

From the mrieker/pdp8v repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Freqctr design in my own project?

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

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