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2 layers17.8 × 18 mmExternal iv9-socket, the printed circuit board in 3D

External iv9-socket

Servacek/numeri

Digitálne hodiny využívajúce na zobrazovanie času sovietské numitrony IV-9. Pomocou rádiového signálu z atómových hodín v Mainflingene sa vedia automaticky zosynchronizovať s absolutným časom.

Size
17.8 × 18 mm
Copper layers
2
Thickness
1.6 mm
Parts
3
Nets
10
Pads
28
Tracks, vias
39, 0
Pours
35
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
28 May 2025
Updated
8 Aug 2026

Overview

External iv9-socket is an open-source printed circuit board by Servacek, from the Servacek/numeri repository on GitHub. It is a 2-layer board of 17.8 × 18 mm with 3 parts on 10 nets, routed with 39 tracks and 0 vias.

README

README.md

Numitronové Hodiny - Numeri

Digitálne hodiny využívajúce na zobrazovanie času staré sovietske numitrony IV-9. Podporujú tiež pripojenie rádiového modulu DCF77 pre automatické nastavovanie času podľa atomových hodín z Mainflingenu.

https://github.com/user-attachments/assets/5947127a-6d7e-4e79-9d8d-92cfa04d009d

DCF77 Anténa

photo_2026-06-10_20-46-53

Vlastná 140 mm anténa sa zdá byť najefektívnejšie a cenovo najdostupnejšie riešenie. Čim väčšia feritová tyč, tým lepšie.

Schéma zapojeniaa návrh plošného spoja

image image image

Parts

3
QtyValueFootprintReferences
1IV-9VacuumTubes:IV-9-Common-SeparatedU$1
1PINHD_1x4_MaleConnector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical_MONOJ3
1PINHD_1x6_MaleConnector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_VerticalJ1

Questions

How big is the External iv9-socket PCB?

It measures 17.8 × 18 mm and has 2 copper layers, 1.6 mm thick.

What parts does the External iv9-socket use?

3 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 External iv9-socket KiCad files?

From the Servacek/numeri repository on GitHub, at the commit this page was made from: the board is subprojects/external-iv9-socket/external-iv9-socket.kicad_pcb and its schematic blokova_schema.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the External iv9-socket design in my own project?

Its repository states no licence, so its author keeps all rights: ask Servacek before reusing the design.

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