Light sensors and blinking DEL detection for electrical consumption reading

Other Hardware Sensors
1

Hello everyone,

I'm working on a project in order to read informations about my electrical consumption. I'm using Arduino+Raspberry and have an electrical meter : LeGrand 0046 81 (see 412080 Compteur modulaire monophasé EMDX³ non MID raccordement direct 63A - 2 modules - avec sortie à impulsions - Espace Pro | Legrand ).
I don't want to read the pulses but the blinking of the DEL on it. In fact, there is 1 Pulse for 10Wh whereas the DEL is blinking for each Wh consumpted (better accuray).
Do you know any light sensor that would be able to detect the blink of a DEL ?
I used some sensors but only for ambiant light, and i doubt about their ability to be able to detect a such sensitive light.
For exemple :
Photo-résistance (photocell/photoresistor/Light Dependent Resistor/LDR/CdS) @ Arduino @ t-o-f
DFRobot Ambient Light Sensor @ Arduino @ t-o-f
http://www.seeedstudio.com/depot/grove-light-sensor-p-746.html
are the one i spoted...
What do you think ? Have you faced this situation before ?

Waiting for answers,
Thank you very much,
Regards,

2

I guess your DEL is an LED (Light Emitting Diode) in English, I hope I'm right there.
Reacting on the light of an LED is a job for most of the photo diode on the market. Given the photo on the page you linked it might be a bit more complex to shield the ambient light from it. I would not use a photo resistor because these might react too slowly and you probably don't have to know the intensity of the light just it's presence or absence. Search for photo diode (a photo transistor is almost the same) in your local suppliers web site. You might have to choose between different wave length models but to give you a hint in this direction you have to tell us the color of the LED you're trying to capture.