HardLabs

Flashlight led

ahmadtak-3212·flashlight_project·electrical/flashlight-led/flashlight-led.kicad_pcb

Flashlight led PCB layout, top view — open source board by ahmadtak-3212

About the Flashlight led PCB

Flashlight led is an open source PCB design by ahmadtak-3212, published on GitHub. It is a 2-layer board measuring 32 × 32 mm, with 5 components from 3 distinct parts.

By type, the board carries 3 diodes and 2 connectors.

It belongs with the power & battery designs in this gallery.

From the project

A handheld flashlight built around a Cree XHP50.3 (6 V) LED. The repo holds two threads of work:

A handheld flashlight built around a Cree XHP50.3 (6 V) LED. The repo holds two threads of work:

1. The power converter (finished, documented in the final report): a discrete, analog, constant-current boost converter that takes 3 V from two alkaline cells up to about 6–6.5 V and regulates the LED at about 1–1.5 A. It uses op-amps, a comparator and a gate driver, with no microcontroller in the loop. It was built as the final project for MIT 6.2222 (fall 2025), including the graduate extension. 2. The product boards (in progress): an STM32 controller with shake-to-wake, a USB-PD charger and…

Flashlight led, from the project README
From the project README

Flashlight led bill of materials (BOM)

5 components, 3 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
+18V
J1
1
GND
J3
3
LED_WARM
D1, D2, D3

Flashlight led design files

The KiCad project lives in the ahmadtak-3212/flashlight_project repository on GitHub; these links point at the commit this page was built from.

Flashlight led: common questions

How big is the Flashlight led PCB?

The Flashlight led measures 32 × 32 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Flashlight led?

5 components, from 3 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Flashlight led design files?

From the ahmadtak-3212/flashlight_project repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Flashlight led design in my own project?

The repository has no license, so all rights stay with ahmadtak-3212. Use it as a reference, and ask the author before reusing the design.

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