Arduino + RF remote + Relays garage automation project

hello i'm new forum    

i'm working on automation project garage. i'm focused in ways manipulate line current applications rf remote collaborated via arduino uno

used arduino uno r3 board , rf remote , module , 8 channel relay module





for both rf remote receiver module , 8 channel relay module, power given arduino vcc.

i have connected rf receiver modules outputs ports on arduino inputs i
and 8 channel relay module arduino outputs

the idea when remote key pressed, signal passes in arduino via rf receiver module. , arduino passes corresponding low signal relay output.



when programmed, concept works. when remote key pressed, signal passed relay through rf module , arduino. corresponding indicator light of particular relay lights up. relay wont trigger. noticed that particular light intensity lower when relay working in other projects.  

is due arduino inability power both rf receiver module , relay module same time? should give separate power 2 modules? or should do

****(when using same relay module other projects such 240v line current bulb blinks arduino , relay triggering worked fine. in occasion signals passed code itself. unlike in scenario signals passed module in code inside arduino , code relay)

thank  

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