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DIY LED Flashlight

Better than off the shelf?

DIY LED Flashlight
As a member of the genus homo electronicus the author has an aversion to buying any electronic product that he can better make himself. Take for example the humble LED flashlight, enter that phrase into the search engine on a well known internet auction site and you can waste an hour scrolling through all the items on offer. Some for less than a couple of dollars including battery, case and shipping from Asia!
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Download the BOM list
The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
Want to learn more about our BOM list? Read the BOM list article for extra information.
Component list
Component List

R1 = 1.5kohm, SMD 0805

C1 = 4.7µF, multilayer, SMD 0805
C2 = 2.2µF, multilayer, SMD 0805

L1 = 4.7µH, SMD 1812

D1 = ZHS400, Schottky diode
LED1,LED2 = LED, white, 5mm (e.g. Reichelt 5-25000 WS)
IC1 = LT1932ES6

S1 = switch, PCB mount, vertical
Battery holder for 2 AAA cells
Enclosure (e.g. Hammond 15930)
PCB # 140066-1

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