2 layers136.8 × 87 mm
2 layers177.8 × 76.2 mm
7SegClock
Alavas/7SegClock4-Digit 7-Segment Alarm Clock
- Size
- 177.8 × 76.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 143
- Nets
- 375
- Pads
- 1,228
- Tracks, vias
- 3,172, 30
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 26 Dec 2014
- Updated
- 13 Aug 2017
Overview
7SegClock is an open-source printed circuit board by Alavas, from the Alavas/7SegClock repository on GitHub. It is a 2-layer board of 177.8 × 76.2 mm with 143 parts on 375 nets, routed with 3,172 tracks and 30 vias.
It is built around the P8X32A-Q44, FT232RL and 24LC256-I/P, with the DS3231S# among its other parts. Its parts include 74 resistors, 32 transistors, 23 capacitors, 6 ICs and 4 diodes.
Main components
4
P8X32A-Q44
QFP4432-Bit 8-Cog Multiprocessor Microcontroller Propeller ChipPARALLAX SEMICONDUCTORUncategorised
FT232RL
SSOP-28-208mil-40℃~+85℃ 3.3V~5.25V、4V~5.25V USB 2.0 USB to UART SSOP-28-208mil USB Converters ROHSFTDIUSB Converters
24LC256-I/P
PDIP-8-40℃~+85℃ 1,000,000 cycles 2.5V~5.5V 200 Years 256Kbit 400kHz 5ms Hardware write protection function、Noise suppression function I2C PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM
DS3231S#
RTC, I²C, ±3.5ppm, SOIC16Maxim Integrated (Analog Devices)Uncategorised
README
README.md7SegClock
4-Digit 7-Segment Alarm Clock
Added Lattice FGPA files.
Updated Propeller files to add MIT license.
Added new Kicad schematic.
Parts
143| Qty | Value | Footprint | References |
|---|---|---|---|
| 67 | 10K | Resistors_SMD:R_0402 | R1, R2, R10, R11, R12, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29 +51 |
| 31 | DMN2041LSD-13 | Custom:SOIC-8_3.9x4.9mm_Pitch1.27mm | Q2, Q10, Q11, Q12, Q13, Q14, Q15, Q16, Q17, Q18, Q19, Q20, Q21, Q22, Q23, Q24 +15 |
| 22 | 0.1uF | Capacitors_SMD:C_0603_HandSoldering | C2, C3, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +6 |
| 7 | 150 | Resistors_SMD:R_0402 | R3, R13, R14, R15, R16, R17, R18 |
| 2 | LED | LEDs:LED-0805 | D1, D2 |
| 1 | 10nF | Capacitors_SMD:C_0603_HandSoldering | C1 |
| 1 | 24LC256 | SMD_Packages:SOIC-8-N | U4 |
| 1 | 5mhz CRYSTAL | Crystals_Oscillators_SMD:Q_49U3HMS | X1 |
| 1 | BATTERY | Custom:SuperCap_604-1020-1-ND | BT1 |
| 1 | DS3231 | SMD_Packages:SO-16-L | U5 |
| 1 | FT232RL | SMD_Packages:SSOP-28 | U3 |
| 1 | FUSE | Fuse_Holders_and_Fuses:Fuse_SMD1206_HandSoldering | F1 |
| 1 | Indicators | Custom:SingleLED | D4 |
| 1 | LCMX02-640UHC-4TG144C | Housings_QFP:TQFP-144_20x20mm_Pitch0.5mm | U6 |
| 1 | LED_Array | Custom:LED-ARRAY | D3 |
| 1 | NPN | Transistors_SMD:sot23 | Q1 |
| 1 | P8X32A | Custom:TQFP-44 | U2 |
| 1 | TPS62172DSGT | Custom:WSON-8-1EP | U1 |
| 1 | USB_Micro_Vertical | Custom:MicroSD_Vertical | CON1 |
Questions
How big is the 7SegClock PCB?
It measures 177.8 × 76.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 7SegClock use?
143 parts, built around the P8X32A-Q44, FT232RL, 24LC256-I/P and DS3231S#. 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 7SegClock KiCad files?
From the Alavas/7SegClock repository on GitHub, at the commit this page was made from: the board is PCB/7SegClock.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the 7SegClock design in my own project?
Its repository states no licence, so its author keeps all rights: ask Alavas before reusing the design.
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