Light sensor - how to measure strong strobes flash light

Thread Starter

omerdoron

Joined Dec 17, 2012
2
Hi,
I am using Arduino.
I need to measure light of 3 strobes (elinchrome d-lite 400)
I try to use LDR, but it's too sensitive.
Please help. I don't know I to measure this light.
each one of the strobes is equal to one second of 400w bulb. and the speed is 1/800 second.
Thanks in advance.
 

JDT

Joined Feb 12, 2009
657
The LDR will not have a fast enough response. Better to use a high-speed photodiode. Normally a strobe only produces light for less than a milisecond. Sensitivity can be controlled with an optical filter (like a welding glass).

Are you trying to measure the peak brightness of the strobe? You will need some kind of sample-and-hold (a capacitor) followed by an A-D converter.
 
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