Guys , hi there with my first post!
i have one arduino mega 2560 connected with 10 ultrasonic sensors (HCSR04 )
i made a test using a bread board and one external supply ( 5v ) and everything work very well.
I need to clean up my project so i bought one shield to connect all sensors and stuff ( arduino mega sensor shield v 2.0 )
i tried to connect on this shield with 5v volts ( removing and letting the jumper ) on blue connector on the shield and this not work.
Also i read about , arduino external power supply ( without shield !!! ) needs one external power between 9v and 12v .
but i don’t know if i connect this external power supply IN THE SHIELD WITH 9 Volts , the shield / arduino will CONVERT from 9v to 5v to my sensors .
I’m afraid to fry my sensor with more voltage than he needs
How to supply energy to shield to work with 15 sensors using 5v?
thank you in advance!
ps : i posted some photos!