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2 layers250 × 56 mmKlock pcb, the printed circuit board in 3D

Moved to https://git.salamon.xyz/adrian/clock-clock-24

Size
250 × 56 mm
Copper layers
2
Thickness
1.6 mm
Parts
45
Nets
86
Pads
281
Tracks, vias
801, 82
Pours
1
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
23 Mar 2023
Updated
1 Dec 2024

Overview

Klock pcb is an open-source printed circuit board by adriansalamon, from the adriansalamon/clock-clock-24 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 250 × 56 mm with 45 parts on 86 nets, routed with 801 tracks and 82 vias.

It is built around the AH3572-P-B, 74AHC595D and DS3231S#, with the BSS138 among its other parts. Its parts include 17 ICs, 13 capacitors, 4 resistors, 3 connectors and 2 transistors. It belongs with the lEDs and displays boards and the ESP32, AVR (ATmega, ATtiny) and RISC-V boards of this library.

Main components

4

README

README.md

My own ClockClock 24 replica

My own take/version of the ClockClock 24 by Humans Since 1982 - A digital clock made from 24 analog clocks. All credit goes to them for coming up with such an awesome design.

Video

My version is made 100% from scratch using my own hardware design. Mine is also slightly smaller, made to fit perfectly on my shelf. This design uses 6 Arduino nanos, each in control of 4 individual clocks, and an ESP32 which orchestrates and sends commands to all Arduinos.

The physical clock is made from MDF, which was routed using a 3d printed jig (I don't own a CNC). That process will not be published.

The software is still WIP and not finished.

Parts

45
QtyValueFootprintReferences
12100nFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12
8AH3572Adrian_library:AH3572-SOT-23U1, U2, U3, U4, U5, U6, U7, U8
410KResistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR1, R2, R3, R4
4MountingHoleMountingHole:MountingHole_3.2mm_M3_PadH1, H2, H3, H4
4VID28-XXAdrian_library:VID28-XX_DownMountU9, U11, U12, U14
2BSS138Package_TO_SOT_SMD:SOT-23Q1, Q2
2Conn_01x04Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_HorizontalJ1, J2
2MS_X12.017Package_SO:SOIC-28W_7.5x17.9mm_P1.27mmU10, U13
110uFCapacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolderC13
11220Battery:BatteryHolder_Keystone_3001_1x12mmBT1
174AHC595Package_DIP:DIP-16_W7.62mmU15
1Arduino_Nano_EveryModule:Arduino_NanoA1
1Conn_01x02Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ3
1DS3231Package_SO:SOIC-16W_7.5x10.3mm_P1.27mmU16
1MOUDLE-SEEEDUINO-XIAO-ESP32C3seeduino:seeduino-MOUDLE14P-THTU18

Questions

How big is the Klock pcb PCB?

It measures 250 × 56 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Klock pcb use?

45 parts, built around the AH3572-P-B, 74AHC595D, DS3231S# and BSS138. 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 Klock pcb KiCad files?

From the adriansalamon/clock-clock-24 repository on GitHub, at the commit this page was made from: the board is hardware/klock_pcb.kicad_pcb and its schematic hardware/klock_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Klock pcb design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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