2 layers376 × 505.8 mm
2 layers85 × 55 mm
NTP Clock
Nabinho/NTP_Clock_VisitCard1Linkit 7697 based NTP Digital Clock with a Visti Card PCB
- Size
- 85 × 55 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 76
- Nets
- 115
- Pads
- 290
- Tracks, vias
- 541, 77
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 24 Mar 2022
- Updated
- 24 Mar 2022
Overview
NTP Clock is an open-source printed circuit board by Nabinho, from the Nabinho/NTP_Clock_VisitCard repository on GitHub. It is a 2-layer board of 85 × 55 mm with 76 parts on 115 nets, routed with 541 tracks and 77 vias.
It is built around the XZFMDK14C, ULN2003 and BC817. Its parts include 33 resistors, 12 ICs, 8 capacitors, 2 diodes and 2 transistors. It belongs with the lEDs and displays boards of this library.
Main components
3README
README.mdNTP_Clock_VisitCard
Linkit 7697 based NTP Digital Clock with a Visti Card PCB
I have the idea of creating an Visit Card to promote myself as a Software and Hardware Developer and project consultant, and for that I decided to go with a PCB in the format of a Credit Card. The circuit chosen is a project I always wanted to build, as I don´t have clocks due to the time to time need for manual calibration. So I connected the LinkIt 7697 (unfortunately discontinued) I had available, to connect it to a NTP server, and be always up to time. The board then controls 4 7-digits displays by 4 4511 ICs that are indirectly driven by ULN2003 transistors.
If you are interested in building your own Visit Card based on this project, feel free to change the PCB file with your own information. Just remember to give some credit.
Parts
76| Qty | Value | Footprint | References |
|---|---|---|---|
| 33 | 1k | Resistor_SMD:R_0805_2012Metric | R1, R2, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23 +17 |
| 8 | 1uF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C4, C5, C6, C7, C8 |
| 4 | 4511 | Package_SO:SO-16_3.9x9.9mm_P1.27mm | U1, U2, U3, U4 |
| 4 | XZFMDK14C | Display_7Segment:7SEGMENT-LED__HDSM531_HDSM533_SMD | U5, U6, U7, U8 |
| 3 | ULN2003 | Package_SO:SO-16_5.3x10.2mm_P1.27mm | U10, U11, U12 |
| 2 | BC817 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | RED | LED_SMD:LED_0805_2012Metric | D1, D2 |
| 1 | Fuse | Fuse:Fuse_0805_2012Metric | F1 |
| 1 | LOGO | logos:nabo | G*** |
| 1 | LOGO | logos:arduino | G*** |
| 1 | LOGO | logos:linkedin | G*** |
| 1 | LOGO | logos:creative-commons | G*** |
| 1 | LOGO | logos:grenade | G*** |
| 1 | LOGO | logos:link_qr | G*** |
| 1 | LOGO | logos:brazil | G*** |
| 1 | LOGO | logos:esd | G*** |
| 1 | LOGO | logos:electronicgarbage | G*** |
| 1 | LOGO | logos:ntp | G*** |
| 1 | LOGO | logos:git_qr | G*** |
| 1 | LOGO | logos:opensourceh | G*** |
| 1 | LOGO | logos:github | G*** |
| 1 | Linkit_7697 | Connector_PinHeader_2.54mm:Linkit | U9 |
| 1 | RESET | Button_Switch_SMD:SW_SPST_SKQG_WithStem | SW1 |
The 72 most common of 76 parts.
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Questions
How big is the NTP Clock PCB?
It measures 85 × 55 mm and has 2 copper layers, 1.6 mm thick.
What parts does the NTP Clock use?
76 parts, built around the XZFMDK14C, ULN2003 and BC817. 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 NTP Clock KiCad files?
From the Nabinho/NTP_Clock_VisitCard repository on GitHub, at the commit this page was made from: the board is NTP_Clock/NTP_Clock.kicad_pcb and its schematic NTP_Clock/NTP_Clock.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the NTP Clock design in my own project?
Its repository states no licence, so its author keeps all rights: ask Nabinho before reusing the design.