2 layers210 × 228 mm
2 layers210 × 228 mm
ClockFOUR
wyolum/ClockFOUR3RGB word clock based on ClockTHREEjr on TiM hardware
- Size
- 210 × 228 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 434
- Nets
- 218
- Pads
- 1,287
- Tracks, vias
- 3,216, 41
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 9 Jul 2014
- Updated
- 15 Jul 2018
Overview
ClockFOUR is an open-source printed circuit board by wyolum, from the wyolum/ClockFOUR repository on GitHub, published under the MIT licence. It is a 2-layer board of 210 × 228 mm with 434 parts on 218 nets, routed with 3,216 tracks and 41 vias.
It is built around the ATMEGA328-PU, DS3231N/DIP and WS2812B, with the SMBJ5339B and MINISMDC200F/16-2 among its other parts. Its parts include 197 capacitors, 183 diodes, 16 resistors, 11 switches and 9 connectors. It belongs with the lEDs and displays boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
5
ATMEGA328-PU
PDIP-28-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH PDIP-28 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
DS3231N/DIP
--40℃~+85℃ 2.3V~5.5V Built-in I2C Temperature compensation、Backup power management and battery charging、Programmable clock output、Alarm function - Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
SMBJ5339B
DO-214AA(SMB)-55℃~+150℃ 1 Independent 1uA 1Ω 400Ω 5.32V~5.88V 5.6V 5W ±5% DO-214AA(SMB) Zener Diodes ROHShongjiachengZener Diodes
MINISMDC200F/16-2
1812-40℃~+85℃ 1.1mm 1.2W 16V 20mΩ 2A 3.2mm 40A 4A 5.4mm 5s 85mΩ 1812 Resettable Fuses ROHSLittelfuseResettable Fuses
README
README.mdClockFOUR
ClockFOUR is a word clock that tells time with words. It has a 14x13 matrix of letters that, when illuminated, tells time to the minute. e.g. “SEVENTEEN MINUTES PAST FOUR” The clock is 28 x 28 x ~2.6 cm. The main PCB is approximately 24 x 22 cm and has 182 RGB WS2812B pixels on the front. The back of the PCB contains an Arduino compatible 328P microprocessor and a DS3231 real time clock chip with 2032 battery backup. Power is provided by a quality international multi-voltage 5V 3A power supply with barrel connector.
The user interface consists of two touch sensitive buttons wired to top two metal screw posts. Modes and settings are actuated by short taps and long presses.
Development team: David Pincus (Project leader, software, hardware & design) Josef Schneider (Software) Anool Mahidharia (Hardware)
Parts
434| Qty | Value | Footprint | References |
|---|---|---|---|
| 182 | 100n | C4_Pretty:c_0805_led | C100, C101, C102, C103, C104, C105, C106, C107, C108, C109, C110, C111, C112, C113, C114, C115 +166 |
| 182 | WS2812B | C4_Pretty:RGB_WS2811B | LED1, LED10, LED11, LED100, LED101, LED102, LED103, LED104, LED105, LED106, LED107, LED108, LED109, LED110, LED111, LED112 +166 |
| 10 | 10K | C4_Pretty:r_0805 | R2, R3, R5, R6, R7, R10, R11, R14, R15, R16 |
| 9 | 100n | C4_Pretty:c_0805 | C1, C3, C6, C8, C9, C11, C197, C198, C199 |
| 4 | 47u | C4_Pretty:c_2917 | C10, C194, C195, C196 |
| 4 | CONN_1 | C4_Pretty:Screw_3mm | S1, S2, S3, S4 |
| 4 | CONN_1 | C4_Pretty:Slot_tiewrap | S10, S11, S12, S13 |
| 4 | CONN_1 | C4_Pretty:BreakOutPad | A6, A7, B2, D7 |
| 4 | LDR | C4_Pretty:r_0805_ldr | LDR1, LDR2, LDR3, LDR4 |
| 2 | 0R | C4_Pretty:r_0805 | R12, R13 |
| 2 | 22p | C4_Pretty:c_0805 | C5, C7 |
| 2 | 470R | C4_Pretty:r_0805 | R1, R4 |
| 2 | 4K7 | C4_Pretty:r_0805 | R8, R9 |
| 2 | PWR_IN | C4_Pretty:Header_3x1_PWR | P3, P5 |
| 2 | Wyolum | C4_Pretty:Logo-WL3 | L2, L3 |
| 1 | 16MHz | C4_Pretty:Xtal_SMD3 | X1 |
| 1 | 5VEN_L | C4_Pretty:r_0805 | P6 |
| 1 | 5VEN_R | C4_Pretty:r_0805 | P8 |
| 1 | ATMEGA328P | C4_Pretty:TQFP32 | U1 |
| 1 | Batt_RTC | C4_Pretty:CR2032_SMD2 | BT1 |
| 1 | Chronogram | C4_Pretty:Logo_silk_OSHW_6x6mm | L4 |
| 1 | DS3231N | C4_Pretty:DS3231 | U2 |
| 1 | FTDI | C4_Pretty:Header_FTDI | P2 |
| 1 | I2C_L | C4_Pretty:STACK-L | P7 |
| 1 | I2C_R | C4_Pretty:STACK-R | P9 |
| 1 | ICSP | C4_Pretty:ISP | P1 |
| 1 | Logo | C4_Pretty:logo_CG | L5 |
| 1 | Marquee | C4_Pretty:Header_4x1 | P10 |
| 1 | OSHW | C4_Pretty:Logo_silk_OSHW_6x6mm | L1 |
| 1 | SMBJ5339B | C4_Pretty:diode-DO214AA | D1 |
| 1 | SW_L | C4_Pretty:SW_SMD | SW2 |
| 1 | SW_R | C4_Pretty:SW_SMD | SW3 |
| 1 | SW_RST | C4_Pretty:SW_SMD | SW1 |
| 1 | miniSMDC200F/16 | C4_Pretty:f_1812 | F1 |
Questions
How big is the ClockFOUR PCB?
It measures 210 × 228 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ClockFOUR use?
434 parts, built around the ATMEGA328-PU, DS3231N/DIP, WS2812B and SMBJ5339B. 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 ClockFOUR KiCad files?
From the wyolum/ClockFOUR repository on GitHub, at the commit this page was made from: the board is KiCad_bak/archived/ClockFOUR.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the ClockFOUR design in my own project?
Its repository publishes it under the MIT 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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