2 layers103 × 30.5 mm
2 layers95 × 66 mm
GClock
PetrovGD/gClock- Size
- 95 × 66 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 9
- Nets
- 19
- Pads
- 60
- Tracks, vias
- 35, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 1 Nov 2026
- Updated
- 4 Nov 2026
Overview
GClock is an open-source printed circuit board by PetrovGD, from the PetrovGD/gClock repository on GitHub. It is a 2-layer board of 95 × 66 mm with 9 parts on 19 nets, routed with 35 tracks and 0 vias.
Its parts include 4 switches and 2 ICs. It belongs with the ESP32 and RISC-V boards of this library.
README
README.mdgClock -- Simple and Reliable
gClock is a simple alarm clock, powered by an ESP32C3. It features functions as:
- Setting an alarm
- Removing an alarm
- Setting minutes until the alarm
- more in future versions
Bill of Materials (BOM)
- 4pcs Cherry MX Switches
- 4pcs Keycaps of your choice
- 1pcs 3.3V buzzer
- 1pcs Seeed Studio ESP32C3
- 1pcs SSD1306 128x64 0.91inch display (I will source the screen myself and won't use the one in the Blare kit)
- 1pcs 3D printed custom enclosure (containing a main part and a protective cover which is going to be glued to the main part)
- 2pcs M3x8mm Screws
- 4pcs M3x16mm Screws (For securing the top plate to the main part)
Plans to upgrade
- Add a functionality for the user to choose a melody
- Add a snooze and stop alarm functions (now it just rings for set amount of seconds)
- Make a more futuristic design
Screenshots of the project
PCB design
Schematic
Top Part
Bottom Part
Main Menu
Set alarm Menu
Set minutes Menu
Parts
9| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | OLED_I2C | footprints:OLED_SSD1306_I2C_0.96 | U2 |
| 1 | XIAO-ESP32-C3-SMD | New_XIAO_Series_Footprints:XIAO-ESP32-C3-DIP | U1 |
The 7 most common of 9 parts.
Questions
How big is the GClock PCB?
It measures 95 × 66 mm and has 2 copper layers, 1.6 mm thick.
What parts does the GClock use?
9 parts. 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 GClock KiCad files?
From the PetrovGD/gClock repository on GitHub, at the commit this page was made from: the board is kicadproject/gclock/gclock.kicad_pcb and its schematic kicadproject/gclock/gclock.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the GClock design in my own project?
Its repository states no licence, so its author keeps all rights: ask PetrovGD before reusing the design.
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