[Tinyos-help] Photocurrent to lux

Robert Szewczyk szewczyk at gmail.com
Thu Sep 29 10:35:23 PDT 2005


Alexandre,

To convert this reading into lux consult the graph labeled short
circuit current linearity on page 3 of the S1087 datasheet:
http://sales.hamamatsu.com/assets/pdf/parts_S/S1087_etc.pdf

Based on that graph, I used the following formulas:

S1087 lx = 1e6*current(mA)
S1087-01 = 1e5*current(mA)

Best regards,


Rob


On 9/29/05, Alexandre Sousa <ajsousa at fe.up.pt> wrote:
> Hi,
>
> How can I convert Photo current to Lux, using the PAR and TSR sensors reading (S1087 and S1087-01)?
> I'm using the Tmote Sky platform.
>
> Many tanks,
> Alex
> --
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