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My Arduino board affected by opening or closing any key to open any lamp in my house

isadek

hi every body ...

i am an Amateur in electrical engineering  i learned a few thing  about micro controllers and i mad a project

this project about light switch trigger by laser

the project Component of 1- Home made Arduino board 2-home made relay module 3- home made voltage regulator 4-tow 5V 1A adapters 5- laser 6- photo resistor  

the voltage regulator  take the power form the first adapter to supply 4.8V to the voltage regulate to out 4.8V to the laser and the laser pointed to the photo resistor and the adrduino board take the power from the second 5V adapter  looping on when the photo resistor value

less than 750 then switch the relay module to high and delay the code for 10000 M Seconds and then switch the relay to low and end

that is the project    BUT........?

when i installed this project to the real live on stairs fluorescent lamp .... first it takes a while to trigger the relay switch  and the biggest problem i do not know why 

when i open any near by switch to open or closing any of my hows lamp its trigger the relay on and then the rest of the code  continue normally

not this only also when i insert any near by plug

its look like some how connected to electricity  

I Rely Do not know the problem where 

and the schismatic for adrduino board , relay module and voltage regulator attached

cold any body please help me image 

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  • looking at your circuit diagrams there are several possible causes.

    1. The reset on the micro processor does not look to be correct- the reset pin is pulled low by the switch and R1 is effectively connected across the supply - R1 does nothing!

    2. T1 2N5496 is connected across the power supply and is connected reversed for the voltage - if it is triggered it will short the power supply!

    3. The relay module D1 and LED are wired the incorrect way around. The LED also should have a limiting resistor in series.

    4. The voltage regulator ADJ pin should have the variable resistor to GND and a fixed value resistor to the output. The way this is connected in the drawing will give major power supply fluctuations.

     

    I hope these are drawing errors only and are not what you have built. If they are drawing errors, please redraw and resubmit the updated drawings, taking care with polarity etc and selection of components.

    This will assist us helping you.

     

    Cheers

    Warren.