Need help

[MrBomBasTiKs]

Hello,

I'm a french student and with my team we want to create a smart meter with a light sensor. So we bought 2 kit LoPy with 2 expansions board and 2 antenna. We want to connect this 2 cards far from them using LoRa but we don't have any knowledge on python. We only learned Arduino. So I want to know how to use a basic light sensor with the LoPy card.

[MrBomBasTiKs]

@livius
I'm actually using this code, because I'm looking to get the blink of the meter.

Know I need to find when the led is blinking, because he send everytime the value. I want to know how to check the difference between this value and the last one.

[livius]

@mrbombastiks
If you need the value from your analog light sensor
then simply use ACD for this e.g:

from machine import ADC
adc = ADC(0)
light = adc.channel(pin='P13',attn=ADC.ATTN_11DB)
#read current light value
value = light()

[MrBomBasTiKs]

Hello, sorry for the overdue.

I'm using a basic lightsensor wich is used with arduino as you can see on this picture :

[jcaron]

@mrbombastiks You could have used a Pysense which has a light sensor built-in (if by light sensor you mean something that measures ambient light level).

[seb]

@mrbombastiks

Do you know what particular light sensor you will be using for your project? Some just provide an analog voltage, others have digital interfaces.