2 layers152.9 × 74.9 mm
2 layers482.6 × 35.6 mm
Precision clock
mitxela/PrecisionClock-Hardware41PCB design for the Precision Clock Mk III
- Size
- 482.6 × 35.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 49
- Nets
- 109
- Pads
- 310
- Tracks, vias
- 1,044, 125
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 2 May 2019
- Updated
- 8 Feb 2023
Overview
Precision clock is an open-source printed circuit board by mitxela, from the mitxela/PrecisionClock-Hardware repository on GitHub. It is a 2-layer board of 482.6 × 35.6 mm with 49 parts on 109 nets, routed with 1,044 tracks and 125 vias.
It is built around the ATTINY2313A-SU, NEO-6M and MAX7219M, with the KCSC02-105 among its other parts. Its parts include 7 capacitors, 2 transistors, 1 IC, 1 connector and 1 crystal. It belongs with the lEDs and displays boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
4
ATTINY2313A-SU
SOIC-20-300mil-40℃~+85℃ 1.8V~5.5V 128Byte 128Byte 18 20MHz 2KB 8 Bit AVR Built-in FLASH SOIC-20-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)NEO-6M
-- GNSS Modules ROHSu-bloxGNSS Modules
MAX7219M
SOP-24-300mil10MHz 150uA 3-Wire Serial Interface 30mA 320mA 4V~5.5V 8 Segment x 8 Digit Built-in display RAM、PWM dimming、BCD input latch function、Power-up display blanking、Lamp test function、Cascadable function SOP-24-300mil Digital Tube Drivers ROHSHGSEMIDigital Tube Drivers
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
README
README.mdPCB design for the Precision Clock Mk III
TODO:
- Clean up repo
- Write a readme
Parts
49| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | KCSC02-105 | precision clock:7seg1inchCC | DCentiSec1, DCentury1, DDay1, DDecade1, DDeciSec1, DHr1, DHyphenMonth1, DHyphenYear1, DMill1, DMin1, DMonth1, DSec1, DTenDay1, DTenHr1, DTenMin1, DTenMonth1 +2 |
| 9 | LED | precision clock:LED_D3.0mm | D_BST1, D_BST2, D_GMT1, D_GMT2, D_PPS1, DColonHM1, DColonHM2, DColonMS1, DColonMS2 |
| 3 | 100n | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C3, C4, C5 |
| 2 | 12p | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C6, C7 |
| 2 | 1u | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2 |
| 2 | 2N5401 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q1, Q2 |
| 2 | MAX7219 | Package_DIP:DIP-24_W7.62mm | UDateDrv1, UTimeDrv1 |
| 1 | 10M | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R_Min_Bright1 |
| 1 | 20K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R_PPS1 |
| 1 | 50K | Potentiometer_THT:Potentiometer_Piher_PT-6-V_Vertical | R_Max_Bright1 |
| 1 | ATTINY2313A | Package_DIP:DIP-20_W7.62mm | U_CONTROL1 |
| 1 | Crystal | Crystal:Crystal_HC18-U_Vertical | X1 |
| 1 | JACK | precision clock:BarrelJack_2 | J1 |
| 1 | Jumper | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | LDR | OptoDevice:R_LDR_4.9x4.2mm_P2.54mm_Vertical | LDR1 |
| 1 | LOGO | precision clock:logo | LOGO1 |
| 1 | MCP1700-33 | Package_TO_SOT_THT:TO-92L_Inline_Wide | U1 |
| 1 | NEO-6M | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | U_GPS1 |
Questions
How big is the Precision clock PCB?
It measures 482.6 × 35.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Precision clock use?
49 parts, built around the ATTINY2313A-SU, NEO-6M, MAX7219M and KCSC02-105. 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 Precision clock KiCad files?
From the mitxela/PrecisionClock-Hardware repository on GitHub, at the commit this page was made from: the board is precision clock.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Precision clock design in my own project?
Its repository states no licence, so its author keeps all rights: ask mitxela before reusing the design.
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