2 layers40 × 30 mm
2 layers61.9 × 61.9 mm
Smartknob
FoxyIsCoding/knobV0A custom simple yet powerful knob, It has a nice web UI and will be able to control multiple stuff in future
- Size
- 61.9 × 61.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 3
- Nets
- 15
- Pads
- 45
- Tracks, vias
- 37, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 Nov 2025
- Updated
- 5 Dec 2025
Overview
Smartknob is an open-source printed circuit board by FoxyIsCoding, from the FoxyIsCoding/knobV0 repository on GitHub, published under the MIT licence. It is a 2-layer board of 61.9 × 61.9 mm with 3 parts on 15 nets, routed with 37 tracks and 0 vias.
Its parts include 2 switches and 1 IC. It belongs with the ESP32 boards of this library.
README
README.mdSmartKnobV0
KnobV0 is a simple project that has a microcontroller and a rotary encoder. It can be connected to a pc using Bluethooth or USB. For now it can control the volume and mute/unmute. In future it will be fully configurable thanks to the WiFi support that allows us to make it have a custom WebUI to configure everything in one place.
Screenshots
Overall :
Schematic:
PCB:
Case:
BOM:
| Product | Price | Link |
|---|---|---|
| Rotary Encoder | 0,53 EUR | AliExpress |
| The microcontroller | 11,14 EUR | RPiShop.cz |
| PCB | 2 EUR | - |
Parts
3| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | RotaryEncoder_Switch_MP | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1 |
| 1 | SW_SP3T | Button_Switch_SMD:SW_SP3T_PCM13 | SW2 |
| 1 | XIAO-ESP32-S3-DIP | OPL:XIAO-ESP32S3-DIP | U1 |
Questions
How big is the Smartknob PCB?
It measures 61.9 × 61.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Smartknob use?
3 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 Smartknob KiCad files?
From the FoxyIsCoding/knobV0 repository on GitHub, at the commit this page was made from: the board is PCB/smartknob.kicad_pcb and its schematic PCB/smartknob.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Smartknob 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).
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