2 layers80 × 80 mm
2 layers196.7 × 31.5 mm
Clock
Matir/hacks18Miscellaneous Hacks
- Size
- 196.7 × 31.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 90
- Nets
- 97
- Pads
- 379
- Tracks, vias
- 965, 145
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 19 Oct 2019
- Updated
- 22 Oct 2026
Overview
Clock is an open-source printed circuit board by Matir, from the Matir/hacks repository on GitHub, published under the BSD-2-Clause licence. It is a 2-layer board of 196.7 × 31.5 mm with 90 parts on 97 nets, routed with 965 tracks and 145 vias.
It is built around the KCSC02-105, AP2112K-3.3 and AT24CS01-SSHM-B, with the PCF85263ATT/AJ, USBLC6-2SC6 and BSS138 among its other parts. Its parts include 38 resistors, 16 ICs, 14 capacitors, 12 transistors and 4 diodes. It belongs with the lEDs and displays boards and the SAM D and SAM boards of this library.
Main components
7
KCSC02-105
SMD-40℃~+85℃ 0.2 1 1.85V 10mm 3mm 6.9mm 7 Segment 75mW Common Cathode Red SMD LED Segment Displays ROHSKingbrightLED Segment Displays
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
AT24CS01-SSHM-B
SOIC-8-40℃~+85℃ 1.7V~5.5V 1Kbit 1MHz 5ms I2C SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROM
PCF85263ATT/AJ
TSSOP-8-3.0mm-40℃~+85℃ 0.28uA 280nA 900mV~5.5V Built-in I2C Watchdog timer、Backup power management and battery charging、Timestamp function、Programmable clock output、Alarm function、Periodic interrupt output Yes TSSOP-8-3.0mm Real Time Clocks ROHSNXP SemiconductorsReal Time Clocks
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
CR2032
-- Unclassified goods ROHSMaxellUncategorised
Parts
90| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R4, R6, R8, R19, R20, R23, R24, R27, R28, R31, R32, R35, R36 |
| 12 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11, Q12 |
| 10 | 200 | Resistor_SMD:R_0603_1608Metric | R17, R18, R21, R22, R25, R26, R29, R30, R33, R34 |
| 10 | KCSC02-105 | Display_7Segment:7SegmentLED_LTS6760_LTS6780 | U7, U8, U9, U10, U11, U12, U13, U14, U15, U16 |
| 8 | 390 | Resistor_SMD:R_0603_1608Metric | R9, R10, R11, R12, R13, R14, R15, R16 |
| 7 | u1 | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5, C10, C11, C13, C14 |
| 4 | 300 | Resistor_SMD:R_0603_1608Metric | R1, R3, R5, R7 |
| 4 | LED | LED_SMD:LED_0603_1608Metric | D1, D2, D3, D4 |
| 3 | 10u | Capacitor_SMD:C_0603_1608Metric | C1, C2, C12 |
| 3 | 1u | Capacitor_SMD:C_0603_1608Metric | C7, C8, C9 |
| 2 | 2.2k | Resistor_SMD:R_0603_1608Metric | R37, R38 |
| 1 | 100u | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 32.768k | Crystal:Crystal_SMD_MicroCrystal_CC7V-T1A-2Pin_3.2x1.5mm | Y1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | AT24CS01-SSHM | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | CORTEX | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J2 |
| 1 | CR2032 | Battery:BatteryHolder_Keystone_3034_1x20mm | BT1 |
| 1 | Ferrite_Bead | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | PCF85263ATT | Package_SO:TSSOP-8_3x3mm_P0.65mm | U4 |
| 1 | SAMD21Exx | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.6x3.6mm | U3 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_PTS645 | SW1 |
| 1 | TCA6416APWR | Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm | U5 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Amphenol_10103594-0001LF_Horizontal | J1 |
Questions
How big is the Clock PCB?
It measures 196.7 × 31.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Clock use?
90 parts, built around the KCSC02-105, AP2112K-3.3, AT24CS01-SSHM-B and PCF85263ATT/AJ. 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 Clock KiCad files?
From the Matir/hacks repository on GitHub, at the commit this page was made from: the board is pcbs/clock/clock/clock.kicad_pcb and its schematic electronics/wiretest/wiretest/wiretest.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Clock design in my own project?
Its repository publishes it under the BSD-2-Clause 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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