How to NOT power the PI 3 with ThunderBorg

Submitted by Diodote on Mon, 03/11/2019 - 14:00

Forums:

Hello,

Please, what is the pin number that I need to disconnect between the 6 pins of the GPIO to NOT power the Raspberry PI 3 from the ThunderBorg?

My PI 3 is already powered by another stable source and I do not want to use the ThunderBorg's power supply. Indeed, the engines that I use create brownouts that restart my PI 3.

Please, be kind for answering only to my question (what pin?) and not try to make me do otherwise because I don' have any time to do other tests.

I see :

- Pin 1 : 3,3 V
- Pin 3 : GPIO 2
- Pin 5 : GPIO 3

- Pin 2 : 5 V (this one ?)
- Pin 4 : 5 V (or this one ?)
- Pin 6 : GND

I suppose it is Pin 2 or 4. May you tell me which one, please ?

Thanks.

Images: 
piborg's picture

piborg

Mon, 03/11/2019 - 17:40

The ThunderBorg supplies 5V power on both pin 2 and pin 4.

To prevent the ThunderBorg powering the Raspberry Pi you can just disconnect both pin 2 and pin 4. The other four connections are all required to talk to the ThunderBorg.

Diodote

Tue, 03/12/2019 - 11:02

Thanks for your clear and quick answer !

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