4 layers99.9 × 100 mm
Hermeslite
softerhardware/Hermes-Lite2
A second generation low-cost amateur HF software defined radio transceiver.
490 parts384
2 layers100 × 100 mm
WordClock
lamothek/WordClockPCB- Size
- 100 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 87
- Nets
- 150
- Pads
- 368
- Tracks, vias
- 794, 104
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 16 Oct 2017
- Updated
- 22 May 2018
Overview
WordClock is an open-source printed circuit board by lamothek, from the lamothek/WordClockPCB repository on GitHub. It is a 2-layer board of 100 × 100 mm with 87 parts on 150 nets, routed with 794 tracks and 104 vias.
It is built around the NUD3124L and MCP23017-E/SS. Its parts include 42 resistors, 22 ICs, 7 connectors, 6 transistors and 3 capacitors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
NUD3124L
SOT-23-40℃~+125℃ 1 1.4Ω 200mA SOT-23 Relay / Coil Drivers ROHSonsemiBrushed DC Motor Drivers
MCP23017-E/SS
SSOP-28(5.3x10.2x0.65)-40℃~+125℃ 1.7MHz 1.8V~5.5V 16 1uA 600mV 8 8mA I2C Interrupt Output Reset function、Cascading and address extension SSOP-28 I/O Expanders ROHSMicrochip TechnologyI/O Expanders
Parts
87| Qty | Value | Footprint | References |
|---|---|---|---|
| 32 | 2.7K | Resistors_SMD:R_0603_HandSoldering | R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25 +16 |
| 16 | NUD3124 | TO_SOT_Packages_SMD:SOT-23-6_Handsoldering | U6, U7, U8, U9, U10, U11, U12, U13, U14, U15, U16, U17, U18, U19, U20, U21 |
| 6 | 10K | Resistors_SMD:R_0603_HandSoldering | R3, R6, R7, R8, R9, R42 |
| 6 | Q_NMOS_GSD | TO_SOT_Packages_SMD:SOT-23_Handsoldering | Q1, Q2, Q3, Q4, Q5, Q6 |
| 4 | Conn_02x05_Top_Bottom | Pin_Headers:Pin_Header_Straight_2x05_Pitch2.54mm | J3, J4, J5, J6 |
| 4 | MountingHole_3.2mm_M3 | Mounting_Holes:MountingHole_3.2mm_M3 | , , , |
| 3 | LED | LEDs:LED_0805_HandSoldering | D1, D2, D3 |
| 2 | 1K | Resistors_SMD:R_0603_HandSoldering | R1, R2 |
| 2 | 4.7K | Resistors_SMD:R_0603_HandSoldering | R4, R5 |
| 2 | 4.7uF | Capacitors_SMD:C_0805_HandSoldering | C1, C2 |
| 2 | Conn_01x02 | Connectors_Phoenix:PhoenixContact_MC-G_02x3.50mm_Angled | J1, J7 |
| 2 | MCP23017 | SMD_Packages:SOJ-28-W | U4, U5 |
| 1 | 100nF | Capacitors_SMD:C_0805_HandSoldering | C3 |
| 1 | AP1117-50 | TO_SOT_Packages_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | ARDUINO_NANO | Modules:Arduino_Nano | U2 |
| 1 | Conn_01x04 | Connectors_Phoenix:PhoenixContact_MC-G_04x3.50mm_Angled | J2 |
| 1 | E2C-12NU | CustomFootprint:EC2-12NU | U3 |
| 1 | TINY_RTC | CustomFootprint:tiny_rtc | U22 |
Questions
How big is the WordClock PCB?
It measures 100 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the WordClock use?
87 parts, built around the NUD3124L and MCP23017-E/SS. 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 WordClock KiCad files?
From the lamothek/WordClockPCB repository on GitHub, at the commit this page was made from: the board is WordClock.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the WordClock design in my own project?
Its repository states no licence, so its author keeps all rights: ask lamothek before reusing the design.
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