# PPS output of the GNSS Receiver

**URL:** <https://discourse.farm-ng.com/t/pps-output-of-the-gnss-receiver/515>\
**Category:** development\
**Tags:** amiga-brain\
**Created:** [April 11, 2025, 2:43pm UTC](https://discourse.farm-ng.com/t/pps-output-of-the-gnss-receiver/515 "2025-04-11T14:43:22Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![andykibz](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.farm-ng.com/andykibz/32/361_2.png) [@andykibz](https://discourse.farm-ng.com/u/andykibz)\
**Post date:** [April 11, 2025, 2:43pm UTC](https://discourse.farm-ng.com/t/pps-output-of-the-gnss-receiver/515/1 "2025-04-11T14:43:23Z")

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Hi all.

I would have loved to have an output from the receiver in the brain that can give Pulse Per Signal(PPS) to sync other sources of data that are outside of the Brain. Like right now, I am in a situation where I have a ROS2 runtime with sensor topics that could benefit from PPS when it comes to syncing them but it seems like to achieve this, I’d have to get another receiver. Or is there a way/hack that I can still obtain the PPS signal integrated with the brain?

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**Author:** ![MScatolin](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.farm-ng.com/mscatolin/32/312_2.png) [@MScatolin](https://discourse.farm-ng.com/u/MScatolin)\
**Post date:** [April 21, 2025, 10:48pm UTC](https://discourse.farm-ng.com/t/pps-output-of-the-gnss-receiver/515/2 "2025-04-21T22:48:52Z")

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Hi @andykibz

Have you tried using the GPS topics itself? While `farmng-amiga.service` is not synchronous, we do tightly integrate the GPS topics to a synchornizer, so you should see all the GPS topics (`pvt`, `relposned`, and `ecef`) very close to 2.5 Hz.

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**Author:** ![andykibz](https://yyz1.discourse-cdn.com/flex031/user_avatar/discourse.farm-ng.com/andykibz/32/361_2.png) [@andykibz](https://discourse.farm-ng.com/u/andykibz)\
**Post date:** [June 27, 2025, 1:00pm UTC](https://discourse.farm-ng.com/t/pps-output-of-the-gnss-receiver/515/3 "2025-06-27T13:00:24Z")

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Yes,I have used the GPS topics. The thing is, I have other systems that could benefit from the GPS clock through some other interface other than Ethernet.