Constant Navigation with GPS Questions
![John Abshier](https://forums.parallax.com/uploads/userpics/277/n0M6IITLXA6SM.jpg)
1. Why did you power the GPS with 5 volts? Product page says 3.5-5 volts.
2. What is the purpose/requirement for the emitter/follower circuit?
John Abshier
2. What is the purpose/requirement for the emitter/follower circuit?
John Abshier
Comments
-Phil
John Abshier
- I powered the GPS module with 5v because I have used this GPS in many different projects and applications and have had better results with it powered off of 5v than I have had with 3.3v. I have seen better satellite tracking and acquisition with a 5v source.
- The purpose of the emitter/follower circuit is to allow you to re-configure the GPS module to be in "Constant Navigation" mode. These modules have to be internally re-configured to change between modes.
- You can use a 3.3v source for your GPS, but like I mentioned, I used a 5v source because I have seen better results in my applications.
-Phil
John Abshier