power a mini pump with a GPIO pin

Thread Starter

abouabdelmajid

Joined Aug 20, 2017
13
hi everyone. My raspberry GPIO pin generate 3v 40ma and i am wondring if i can use a booster step up to power up a mini pump (12v 0.5a) using the GPIO pin with this booster step up without using the relay and a new outside power source ? if its impossible can anybody tell me if there is a way to power my mini pump with the GPIO pin without using an other power outside source ?
 

MrChips

Joined Oct 2, 2009
30,720
No. It is not possible because it violates the conservation of energy.

Your mini pump needs 6W of power. The rPi GPIO can only supply 0.12W.
You need an additional power source that can supply at least 6W, i.e. 12V @ 0.5A.
 

danadak

Joined Mar 10, 2018
4,057
You need both a 12V power source but also a buffer/transistor to
turn the pump on or off.

Logic level mosfet makes most sens, something like this -



Regards, Dana.
 
Top