2 layers307 × 27 mm
Cl0ck display
Clewsy/gps_clock
A 16-digit, 7-segment LED clock that syncs time from a GPS receiver. Mirrored from GitLab.
16 parts6MIT
2 layers307 × 27 mm
Cl0ck control
Clewsy/gps_clock6A 16-digit, 7-segment LED clock that syncs time from a GPS receiver. Mirrored from GitLab.
- Size
- 307 × 27 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 13
- Pads
- 105
- Tracks, vias
- 186, 30
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 20 Jul 2016
- Updated
- 13 Nov 2021
Overview
Cl0ck control is an open-source printed circuit board by Clewsy, from the Clewsy/gps_clock repository on GitHub, published under the MIT licence. It is a 2-layer board of 307 × 27 mm with 20 parts on 13 nets, routed with 186 tracks and 30 vias.
It is built around the ATMEGA328P-AU and DS3234S#. Its parts include 4 connectors, 3 switches, 2 capacitors, 2 ICs and 1 resistor. It belongs with the radio and wireless and lEDs and displays boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA328P-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
DS3234S#
SO-20-300mil-40℃~+85℃ 1.5uA 2V~5.5V 400uA Built-in SPI Temperature compensation、Backup power management and battery charging、InsideSRAM/NVRAM、Programmable clock output、Alarm function Yes SO-20-300mil Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real-Time Clocks (RTC)
README
README.mdgps_clock has the following features and characteristics:
- 16 digit 7-segment LED display.
- Date/Time display EPOCH format (seconds elapsed since 1970-01-01).
- Date/Time display ISO-8601 format (YYYY.MM.DD.HH.MM.SS).
- Adjustable brightness (setting retained with power-cycle).
- Programmable UTC offset from -12hrs to +12hrs in half-hour increments to match any timezone (setting retained with power-cycle).
- RTC with battery back-up to retain time with power-cycle and/or absence of GPS signal.
The code, schematics (control board & display board) and PCB layouts (control board & display board) are all included here on gitlab.
Additional info and photos can be found here.
Proudly mentioned at hackaday.com (and linked again in a later article).
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 1.0uF | Capacitors_SMD:C_0603 | C1, C2 |
| 1 | 10k | Resistors_SMD:R_0603 | R1 |
| 1 | 3V | Battery_Holders:Keystone_3000_1x12mm-CoinCell | BATT1 |
| 1 | ATMEGA328P-A | Housings_QFP:TQFP-32_7x7mm_Pitch0.8mm | IC1 |
| 1 | AVR-ISP-6 | Pin_Headers:Pin_Header_Straight_2x03 | CON1 |
| 1 | BARREL_JACK | Connectors:BARREL_JACK | POWER1 |
| 1 | BUTTON_CONN | Pin_Headers:Pin_Header_Angled_1x03 | PH2 |
| 1 | CONN_01X02 | Pin_Headers:Pin_Header_Straight_1x02 | P2 |
| 1 | CONN_01X03 | Pin_Headers:Pin_Header_Straight_1x03 | P1 |
| 1 | DS3234 | Housings_SOIC:SOIC-20W_7.5x12.8mm_Pitch1.27mm | IC2 |
| 1 | FTDI | Pin_Headers:Pin_Header_Angled_1x06 | PH1 |
| 1 | GPS | Pin_Headers:Pin_Header_Straight_1x05 | P3 |
| 1 | SW_B1 | Buttons_Switches_SMD:SW_SPST_PTS645 | SW2 |
| 1 | SW_B2 | Buttons_Switches_SMD:SW_SPST_PTS645 | SW3 |
| 1 | SW_RESET | Buttons_Switches_SMD:SW_SPST_PTS645 | SW1 |
The 16 most common of 20 parts.
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Questions
How big is the Cl0ck control PCB?
It measures 307 × 27 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Cl0ck control use?
20 parts, built around the ATMEGA328P-AU and DS3234S#. 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 Cl0ck control KiCad files?
From the Clewsy/gps_clock repository on GitHub, at the commit this page was made from: the board is pcb/cl0ck_control/cl0ck_control.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Cl0ck control 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).