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2 layers125.6 × 116.6 mmIo25 right, the printed circuit board in 3D

Io25 right

toonewok/io
Size
125.6 × 116.6 mm
Copper layers
2
Thickness
1.6 mm
Parts
67
Nets
62
Pads
463
Tracks, vias
750, 80
Pours
1
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
25 Mar 2026
Updated
8 Apr 2026

Overview

Io25 right is an open-source printed circuit board by toonewok, from the toonewok/io repository on GitHub. It is a 2-layer board of 125.6 × 116.6 mm with 67 parts on 62 nets, routed with 750 tracks and 80 vias.

It is built around the SN74LV1T34DBV and 1N4148WT. Its parts include 27 switches, 25 diodes, 5 connectors, 3 ICs and 2 resistors.

Main components

2

README

README.md

io

Parts

67
QtyValueFootprintReferences
251N4148WTkbdextras:1N4148WD1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +9
25SW_Pushkbdextras:mx-choc-dualSW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +9
24.7kkbdextras:ARG05FTC4701R1, R2
2SN74LV1T34DBVPackage_TO_SOT_SMD:SOT-23-5U2, U3
13v-i2cConnector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_VerticalJ3
15v-i2cConnector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_VerticalJ2
1AudioJack4kbdextras:JACK_54-00176_tensilityJ1
1BOOTButton_Switch_THT:SW_PUSH_6mmSW26
1LOGOLOGOG***
1RESETButton_Switch_THT:SW_PUSH_6mmSW27
1dev-outConnector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_VerticalJ5
1dev-out-powerConnector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_VerticalJ4
1~kbdextras:pro_micro_rp2040U1

The 63 most common of 67 parts.

Questions

How big is the Io25 right PCB?

It measures 125.6 × 116.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Io25 right use?

67 parts, built around the SN74LV1T34DBV and 1N4148WT. 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 Io25 right KiCad files?

From the toonewok/io repository on GitHub, at the commit this page was made from: the board is kicad/right/io25_right.kicad_pcb and its schematic kicad/left/io25_left.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Io25 right design in my own project?

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

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