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2 layers8.9 × 15 mmLightsaber, the printed circuit board in 3D

This is a full schematic and board for a tiny MOSFET power controller. It was designed for the lightsaber project as I had very specific power and space requirements (over 10A at 4V)

Size
8.9 × 15 mm
Copper layers
2
Thickness
1.6 mm
Parts
9
Nets
7
Pads
27
Tracks, vias
57, 5
Routed
Yes
KiCad
KiCad 7 (file 20221018)
Created
9 Dec 2024
Updated
9 Dec 2024

Overview

Lightsaber is an open-source printed circuit board by andreas-str, from the andreas-str/tiny-power-board repository on GitHub. It is a 2-layer board of 8.9 × 15 mm with 9 parts on 7 nets, routed with 57 tracks and 5 vias.

It is built around the BAT54C and IRLML0030TRPBF. Its parts include 2 resistors, 2 transistors, 1 capacitor, 1 diode and 1 connector.

Main components

2

README

README.md

tiny-power-board

This is a full schematic and board for a tiny MOSFET power controller. It was designed for the lightsaber project as I had very specific power and space requirements (over 10A at 4V)

{2FF897CA-7B19-4398-BFA1-39C01CDC2C0D} image image

Parts

9
QtyValueFootprintReferences
2100KResistor_SMD:R_0603_1608MetricR1, R2
1100nFCapacitor_Tantalum_SMD:CP_EIA-1608-10_AVX-LC1
1BAT54CPackage_TO_SOT_SMD:SOT-23D1
1Battery + InTestPoint:TestPoint_Pad_D2.0mmI
1Battery + OutTestPoint:TestPoint_Pad_D2.0mmO
1GPIOConnector_PinHeader_1.00mm:PinHeader_1x04_P1.00mm_VerticalJ1
1IRLML0030TRPBFPackage_TO_SOT_SMD:SOT-23Q2
1SI7149ADP-T1-GE3Package_SO:PowerPAK_SO-8_SingleQ1

Questions

How big is the Lightsaber PCB?

It measures 8.9 × 15 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Lightsaber use?

9 parts, built around the BAT54C and IRLML0030TRPBF. 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 Lightsaber KiCad files?

From the andreas-str/tiny-power-board repository on GitHub, at the commit this page was made from: the board is lightsaber.kicad_pcb and its schematic lightsaber.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Lightsaber design in my own project?

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

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