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2 layers55.2 × 117.8 mmKoracni ksilofon, the printed circuit board in 3D

A project for an educational stairway enhancment, which consists of sensor for tracking the steps on stairs. Walking on stairs triggers audio and video effects.

Size
55.2 × 117.8 mm
Copper layers
2
Thickness
1.6 mm
Parts
55
Nets
110
Pads
262
Tracks, vias
1,457, 178
Pours
1
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
11 Jun 2025
Updated
22 May 2026

Overview

Koracni ksilofon is an open-source printed circuit board by davidzindovic, from the davidzindovic/Educational-staircase repository on GitHub. It is a 2-layer board of 55.2 × 117.8 mm with 55 parts on 110 nets, routed with 1,457 tracks and 178 vias.

Its parts include 24 connectors, 7 ICs, 5 resistors, 4 capacitors and 3 switches. It belongs with the ESP32 boards of this library.

README

README.md

Musical stairs with video effects

This project was constructed for use on the Faculty of Education, University of Ljubljana. The goal was to create attachable hardware to put onto an existing staircase (covering half the surface) with 2 turns and 25 steps. Input data is processed by an ESP32, musical effects are played from an SD card with the help od MP3-TF player and visual effects are displayed on a projection/ screen via Raspberry Pi. Data is transmitted from the ESP32 to RPI via Bluetooth.

Part of the staircase with added hardware Technical Drawing

Hardware

  • ESP32
  • MP3-TF player module
  • Mux 4051
  • Raspberry Pi 5 PCB render

Parts

55
QtyValueFootprintReferences
14Screw_Terminal_01x03TerminalBlock:TerminalBlock_bornier-3_P5.08mmJ1, J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13, J14
74051Package_DIP:DIP-16_W7.62mmU1, U2, U3, U4, U5, U6, U7
4ESP32 M3Moji_footprinti:M3 luknjaH1, H2, H3, H4
4MountMountingHole:MountingHole_3.2mm_M3H5, H6, H7, H8
4SolderJumper_2_OpenJumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mmJP1, JP2, JP3, JP4
30.1uFCapacitor_THT:C_Disc_D3.4mm_W2.1mm_P2.50mmC1, C2, C3
310kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR2, R5, R6
2Conn_01x08_SocketConnector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_VerticalJ15, J16
2Conn_01x18_SocketConnector_PinSocket_2.54mm:PinSocket_1x18_P2.54mm_VerticalJ19, J20
13V3 jumperConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ22
15V jumperConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ21
1AudioJack2_Ground_SwitchCustom LED:Audio jack connectorJ23
1C_PolarizedCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC4
1Flash JumperConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ18
1Power inputTerminalBlock:TerminalBlock_bornier-3_P5.08mmJ26
1SW_DIP_x01Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalSW3
1Serial JumperConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ17
1Volume downConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalSW2
1Volume upConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalSW1
1backupResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR1
1backup za analogResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR3

Questions

How big is the Koracni ksilofon PCB?

It measures 55.2 × 117.8 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Koracni ksilofon use?

55 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 Koracni ksilofon KiCad files?

From the davidzindovic/Educational-staircase repository on GitHub, at the commit this page was made from: the board is Hardware/Koracni ksilofon.kicad_pcb and its schematic Hardware/Koracni ksilofon.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Koracni ksilofon design in my own project?

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

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