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2 layers30 × 15 mmTachoSensor, the printed circuit board in 3D

TachoSensor

Numata-wasa/Tachometer
Open in PCBKitView on GitHub.kicad_pcb
Size
30 × 15 mm
Copper layers
2
Thickness
1.6 mm
Parts
8
Nets
5
Pads
16
Tracks, vias
16, 50
Pours
1
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
11 Dec 2025
Updated
20 Feb 2026

Overview

TachoSensor is an open-source printed circuit board by Numata-wasa, from the Numata-wasa/Tachometer repository on GitHub, published under the MIT licence. It is a 2-layer board of 30 × 15 mm with 8 parts on 5 nets, routed with 16 tracks and 50 vias.

It is built around the RPR-220. Its parts include 2 resistors, 1 IC, 1 diode and 1 connector.

Main components

1

README

README.md

tachometer

Parts

8
QtyValueFootprintReferences
10.1uFCapacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm0.1uF
1100Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR101
11kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR102
1LOGOLibrary:wasa_10mmG***
1OUTConnector_JST:JST_XH_S3B-XH-A-1_1x03_P2.50mm_HorizontalJ101
1PWRLED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolderD101
1RPR-220OptoDevice:Everlight_ITR8307F43U101

The 7 most common of 8 parts.

Questions

How big is the TachoSensor PCB?

It measures 30 × 15 mm and has 2 copper layers, 1.6 mm thick.

What parts does the TachoSensor use?

8 parts, built around the RPR-220. 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 TachoSensor KiCad files?

From the Numata-wasa/Tachometer repository on GitHub, at the commit this page was made from: the board is haradware/TachoSensor/TachoSensor/TachoSensor.kicad_pcb and its schematic haradware/TachoSensor/TachoSensor/TachoSensor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the TachoSensor 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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