Circuit help - Raspberry Pi Forums

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i trying figure out how create circuit need power 2 devices.
new understanding isn't fullest yet. thinking need voltage divider power each device 1 power source. have created black box don't know how create part yet. guys can me , give me lesson.

image

i think have lot learn.

firstly, don't think relay needs 10a @ 5v. suspect that's rating of contacts. scribbled out value of 120ma sounds more plausible.

secondly, if use voltage divider set voltage moment draw current voltage change. need use 5v regulator , 3.3v regulator voltages want.

pi has 5v , 3.3v outputs. why can't use them?


raspberrypi



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