Will this kill my PI?

[January Memes]

Im currently following the manual of a Raspberry PI starter kit and lerning how to controll a DC motor but while building it I noticed something odd, on the datasheet of the L9110 it says VCC has to be connected to 5V but on the schcematic it is connected to ground, will this fry my Pi if I plug it in?

[Theguywhobea]

Looks like in the schematic they don't have anything wired to what should be the Vcc buss on the breadboard, do they want you to use an external supply for driving the motor and just using the L9110 for switching? If you wire it exactly the way the schematic is, it most likely won't fry your Pi, it just wont do anything, as it has the Vcc pins on the chip (which are Vin not Vout) wired to ground so there is no voltage anywhere to fry anything. Looks like they do have +5v from the Pi wired to the LED, and that looks like the only thing that will have power.

[r4tch3t]

20 minutes ago, January Memes said:

Im currently following the manual of a Raspberry PI starter kit and lerning how to controll a DC motor but while building it I noticed something odd, on the datasheet of the L9110 it says VCC has to be connected to 5V but on the schcematic it is connected to ground, will this fry my Pi if I plug it in?

As above you need to connect the 5v rail to the chip. 

The chip itself supports 2.5V - 12V input to VCC and the IO pins the same. Even when powered by a higher voltage the inputs will still accept 3.3V.

 

Your best bet is to power it with the 3.3V output on the Pi. If that doesn't provide enough power then try the 5V.

 

Edit: forgot to answer the question, no you won't fry your Pi unless you do something wrong by accident. Very unlikely. 

[Hackentosher]

Follow the data sheet from the manufacturer of the IC, not a guide. As for killing the pi, the pi is built to be pretty resilient and has short circuit and reverse voltage protection so it should be fine. 

[bob345]

Not sure where you are seeing vcc connected to ground.  Just for reference, connections on a breadboard do not cross over the center gap. The breadboard layout you provided just has vcc floating. As others have already said, typically the power source for your motor will be isolated from the logic. One reason this is done is to isolate your more sensitive electronics from potentially harmful inductive spikes. Another reason is to allow the use of an entirely separate power source that can provide allot more voltage & current. Most mcu's are only going to run off of 3.3-5v where as it is fairly common to use a motor anywhere from 12v-48v or even higher.