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2 layers160 × 50 mmNumeri iv9-hodiny atmega328, the printed circuit board in 3D

Numeri iv9-hodiny atmega328

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
160 × 50 mm
Copper layers
2
Thickness
1.6 mm
Parts
77
Nets
84
Pads
300
Tracks, vias
342, 7
Pours
259
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
28 May 2025
Updated
8 Aug 2026

Overview

Numeri iv9-hodiny atmega328 is an open-source printed circuit board by Servacek, from the Servacek/numeri repository on GitHub. It is a 2-layer board of 160 × 50 mm with 77 parts on 84 nets, routed with 342 tracks and 7 vias.

It is built around the BZW06-5V8. Its parts include 20 capacitors, 19 resistors, 6 ICs, 5 connectors and 2 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

1

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

77
QtyValueFootprintReferences
11100nFCapacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mmC3, C4, C5, C6, C7, C11, C13, C14, C15, C17, C19
710KResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR1, R8, R9, R11, R12, R14, R15
4IV-9VacuumTubes:IV-9_External_Socket_Asymetric1h1, 1m1, 10h1, 10m1
4TPIC6B595N/TPIC6595NPackage_DIP:DIP-20_W7.62mm_Socket_With_ICU2, U3, U4, U5
31uFCapacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mmC9, C16, C20
34u7Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mmC10, C12, C18
210KResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_VerticalR10, R13
210RResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR21, R22
2470RResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR3, R4
2620RResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR2, R20
268pF±5%Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mmC1, C2
2ControlTerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_HorizontalTLACIDLO1, TLACIDLO2
2LOGOLOGOG***, G***
110KResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_HorizontalR7
110KPCM_SL_Devices:potentiometer_3362PRV2
110KResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR23
110nFCapacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mmC8
116MHz±30ppmCrystal:Crystal_HC49-4H_VerticalY1
11N4728Diode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD2
11N5819Diode_THT:D_DO-41_SOD81_P7.62mm_HorizontalD1
11N5908Diode_THT:D_DO-15_P12.70mm_HorizontalTSV2
11R±5%Resistor_THT:R_Axial_DIN0414_L11.9mm_D4.5mm_P20.32mm_HorizontalR16
11x2Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_VerticalJ7
127RResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR19
12x3Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_VerticalJ6
150KPCM_SL_Devices:potentiometer_3362PRV1
1ATmega328/ATmega328PPackage_DIP:DIP-28_W7.62mm_SocketU1
1BZW06-5V8Diode_THT:D_DO-15_P12.70mm_HorizontalTSV1
1DCF77Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_VerticalDCF77-MODUL1
1F1A25/F900mAFuse:Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_OpenF1
1HW-084ExternalModules:HW_84J5
1INA219BxDPackage_SO:SOIC-8_3.9x4.9mm_P1.27mmU6
1PINHD_1x3_FemaleConnector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ4
1RESETButton_Switch_THT:SW_PUSH_6mmSW1
1RGB_LEDConnector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_VerticalRGB_LED1
1Screw_Terminal_01x04Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_VerticalJ2
1USB-CTerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_HorizontalNAPÁJANIE1
1 79R@100MHzInductor_THT:L_Axial_L5.0mm_D3.6mm_P10.00mm_Horizontal_Murata_BL01RN1A2A2FB1

The 71 most common of 77 parts.

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Questions

How big is the Numeri iv9-hodiny atmega328 PCB?

It measures 160 × 50 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Numeri iv9-hodiny atmega328 use?

77 parts, built around the BZW06-5V8. 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 Numeri iv9-hodiny atmega328 KiCad files?

From the Servacek/numeri repository on GitHub, at the commit this page was made from: the board is __numeri-iv9-hodiny-atmega328.kicad_pcb and its schematic blokova_schema.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Numeri iv9-hodiny atmega328 design in my own project?

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