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Home › Magazines › 2008 › February › LED Ringflash

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LED Ringflash

Proper lighting for macro-photography!

Published in issue 374, February 2008

LED Ringflash
The availability of increasingly high-performance digital cameras and falling prices has encouraged a good many people to take an interest in photography, and macro-photography too. If lighting conditions are not ideal, it will be necessary to resort to the use of flash, with the attendant risk of shadows. The solution is a ringflash – and while we’re about it, why not one using LEDs?

Components

Relevant websites

Free downloads

Resistors
R1 = 10kΩ
R2 = 1MΩ
R3,R4 = 330Ω
Capacitors
C1,C2 = 22pF
C3 = 330nF
C4 = 1μF
C5 = 100nF
D1 = BAT42
D2-D10 = LED, 3mm, red
T1 = IRFBF20
IC1 = PIC16F628, programmed, Elektor Shop # 070612-41
IC2 = 4051
IC3 = 78L05
X1 = 4MHz quartz crystal
S1,S2 = miniature switch, PCB mount
S3 = on/off switch
K2 = 6-way SIL pinheader
K1 = 3.5mm jack socket
6 solder pins
PCB, ref. 070612-1 from www.thepcbshop.com
Project software, PIC source and hex. files, free download # 070612-11-UK.zip from www.elektor.com 
LED ring parts
Semiconductors
32 LEDs, 5mm, white, HLMP-CW11-X1000 (Avago; from Farnell)
Miscellaneous
Ring support, home made (see inset “Constructing the ring”)

Click below to download a PDF copy of this article from Elektor magazine.

 

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PDF PCB
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Order this magazine 
Magazine February 2008
EN374 (USD 6.30)
 

Order from Elektor 
PIC16F628, programmed
070612-41 (USD 17.00)
PCB, bare
070612-1
 

Free downloads 

Software

Free download
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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