My serial port is the 3.3V variety.
Can I connect Ultimate GPS JP1 pin 9=3V3 directly to my 3.3V power supply, or should I still go through the LDO (e.g. pin 2=VIN) instead?
Ultimate GPS powered directly from 3.3V
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- adafruit_support_mike
- Posts: 67454
- Joined: Thu Feb 11, 2010 2:51 pm
Re: Ultimate GPS powered directly from 3.3V
The 3.3v pin is an output from the onboard regulator, and in general you don't want to feed regulators backwards.
The Vin pin can accept any supply voltage from 3.3v to 5v, so go ahead and make your power connection there.
The Vin pin can accept any supply voltage from 3.3v to 5v, so go ahead and make your power connection there.
- jes
- Posts: 23
- Joined: Sat Nov 23, 2013 9:37 pm
Re: Ultimate GPS powered directly from 3.3V
Well said, thanks :)adafruit_support_mike wrote:.. in general you don't want to feed regulators backwards...
Please be positive and constructive with your questions and comments.