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2 layers21.3 × 84.2 mm404-KNF, the printed circuit board in 3D

404-KNF

DaLama007/404-KNF

My mom always has this issue that she looses her stuff, such as keys, phone etc. at home. I want to make a simple and intuitive system that allows her to, in a click of a button, be informed through a buzzer and a flashing light where her valuables reside.The project will use wifi.

Open in PCBKitView on GitHub.kicad_pcb
Size
21.3 × 84.2 mm
Copper layers
2
Thickness
1.6 mm
Parts
4
Nets
16
Pads
31
Tracks, vias
16, 0
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
15 Jun 2026
Updated
6 Jul 2026

Overview

404-KNF is an open-source printed circuit board by DaLama007, from the DaLama007/404-KNF repository on GitHub. It is a 2-layer board of 21.3 × 84.2 mm with 4 parts on 16 nets, routed with 16 tracks and 0 vias.

Its parts include 3 switches and 1 IC. It belongs with the radio and wireless boards and the ESP32 and RISC-V boards of this library.

README

README.md

404-KNF

My mom always has this issue that she looses her stuff, such as keys, phone etc. at home. I want to make a simple and intuitive system that allows her to, in a click of a button, be informed through a buzzer and a flashing light where her valuables reside.The project will use wifi.

Parts

4
QtyValueFootprintReferences
3SW_PushButton_Switch_Keyboard:SW_Cherry_MX_1.00u_PCBSW1, SW2, SW3
1ESP32-C3_SUPERMINI_SMDESP32_Supermini:MODULE_ESP32-C3_SUPERMINIU1

Questions

How big is the 404-KNF PCB?

It measures 21.3 × 84.2 mm and has 2 copper layers, 1.6 mm thick.

What parts does the 404-KNF use?

4 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 404-KNF KiCad files?

From the DaLama007/404-KNF repository on GitHub, at the commit this page was made from: the board is PCB/kicad.kicad_pcb and its schematic PCB/kicad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the 404-KNF design in my own project?

Its repository states no licence, so its author keeps all rights: ask DaLama007 before reusing the design.

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