2 layers12.7 × 12.7 mm Start module, the printed circuit board in 3D

Start module

Start module used in Robot-SM. New design in KiCad 10 based on https://github.com/p1rse/robot-sumo-start-module/

Size: 12.7 × 12.7 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 13
Nets: 15
Pads: 46
Tracks, vias: 117, 11
Pours: 1
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 23 Sep 2026
Updated: 8 Oct 2026

Overview

Start module is an open-source printed circuit board by yrgohenhal, from the yrgohenhal/start_module repository on GitHub. It is a 2-layer board of 12.7 × 12.7 mm with 13 parts on 15 nets, routed with 117 tracks and 11 vias.

It is built around the ATTINY13A-MMF, TSOP75338WTT and KT-0603R. Its parts include 5 resistors, 2 capacitors, 2 ICs, 2 diodes and 2 connectors. It belongs with the robots and motor control boards and the AVR (ATmega, ATtiny) boards of this library.

Main components

README

README.md

Project: till_elekt_P1

This is the HW design and fabrication files for the start module used in Robot-SM (Chalmers annual event). The design is based on https://github.com/p1rse/robot-sumo-start-module. This KiCad project is prepared for manufacturing by JLCPCB. Platform Info

Status

Documentation

Schematic and PCB layout created in KiCad Version: 10.0.6-10.0.6~ubuntu24.04.1
Fabrication files are placed in the /fabrication directory upon release.
Other documentation and archived project is placed in /docs

Parts

Qty	Value	Footprint	References
2	1.0 kΩ	LCSC:R0402	R4, R5
1	1.0 µF	LCSC:C0402	C2
1	10 kΩ	LCSC:R0402	R3
1	100 nF	LCSC:C0402	C1
1	100 Ω	LCSC:R0402	R1
1	470 Ω	LCSC:R0402	R2
1	ATTINY13A-MMF	LCSC:QFN-10_L3.0-W3.0-P0.50-BL-EP	U1
1	AVR-ISP-6	Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical	J2
1	Conn_01x04	Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical	J1
1	KT-0603R	LCSC:LED-SMD_L1.6-W0.8-R-RD	D1
1	Schottky	LCSC:SOD-523_L1.2-W0.8-LS1.6-RD	D2
1	TSOP75338WTT	LCSC:SENSOR-SMD_TSOP75336TT	IC1

Questions

How big is the Start module PCB?

It measures 12.7 × 12.7 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Start module use?

13 parts, built around the ATTINY13A-MMF, TSOP75338WTT and KT-0603R. 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 Start module KiCad files?

From the yrgohenhal/start_module repository on GitHub, at the commit this page was made from: the board is start_module.kicad_pcb and its schematic start_module.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Start module design in my own project?

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

Category and platform

Robots and motor control AVR (ATmega, ATtiny)

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/yrgohenhal-start-module" title="Start module in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/yrgohenhal-start-module.jpg" alt="Start module" width="1200" height="900">

A picture that opens the board, for a README

[![Start module](https://pcbkit.io/embed/boards/yrgohenhal-start-module.jpg?size=s)](https://pcbkit.io/boards/yrgohenhal-start-module)

Source

Repository: yrgohenhal/start_module
Board file: start_module.kicad_pcb
Commit: 1e391bf
Licence: Not stated

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