Pdk digital clock
About the Pdk digital clock PCB
Pdk digital clock is an open source PCB design by serisman, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 28.8 × 14 mm, with 12 components from 10 distinct parts.
Other key parts include the PFS154-S16, 74HC595 and SLR0394DRC5BD. By type, the board carries 4 capacitors, 3 ICs, 2 resistors, 1 crystal, 1 connector and 1 switch.
From the project
A 4-digit 7-segment digital clock, based on the inexpensive Padauk microcontrollers
This PCB design was created with KiCad, and has been shared on OSHPARK. There are also gerber files available in the output/gerber/ directory.
This uses the SLR0394DRC5BD 4-digit 7-segment common cathode 'time' display, which sits over the top of the 74HC595 and the (2) 4x resistor packs. The 74HC595 is used to drive the (4) 7-segment digits, (2) outputs per digit for extra current sink capabilities. The segments themselves are driven directly by the Port B outputs of the Padauk microcontroller.
Main components on the Pdk digital clock
Pdk digital clock bill of materials (BOM)
12 components, 10 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PFS154-S16 | SOIC-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | 74HC595 | SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | SLR0394DRC5BD | SLR039DRC5BD | U3 |
| 1 | 32.768kHz | Crystal_C26-LF_D2.1mm_L6.5mm_Horizontal | Y1 |
| 1 | USB_B_Micro | USB_Micro_B_Male | J1 |
| 1 | BTN | SMD-SW_Push_3.5x4.55_Side | SW1 |
| 1 | 100nF | C_0805 | C1 |
| 1 | 10uF | C_0805 | C2 |
| 2 | 20pF | C_0805 | C3, C4 |
| 2 | 680 | R_Array_Convex_4x0603 | RN1, RN2 |
Pdk digital clock design files
The KiCad project lives in the serisman/pdk-digital-clock repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb-s16/pcb.kicad_pcb
Pdk digital clock: common questions
How big is the Pdk digital clock PCB?
The Pdk digital clock measures 28.8 × 14 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Pdk digital clock?
12 components, from 10 distinct parts. The full bill of materials is listed on this page.
Where can I download the Pdk digital clock design files?
From the serisman/pdk-digital-clock repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Pdk digital clock design in my own project?
Yes, under the terms of its GPL-3.0 license, which serisman chose for the repository.