July 5, 2013 AT 6:00 am

Precision NTP Syncing with the PPS Output of our Ultimate GPS #piday #raspberrypi @Raspberry_Pi

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Here is a way to get precision NTP syncing with the PPS output of our Ultimate GPS, but without a kernel modification:

This program enables you to connect a GPS module with PPS signal (or any other PPS source) to a Raspberry Pi and then sync the local clock using NTP. This can give you very accurate timekeeping. When you use this program you do not need to patch the kernel to get PPS support, you also do not need to patch the NTP program.

Read more*


Featured Adafruit Products

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Ultimate GPS Module – 66 channel w/10 Hz updates – MTK3339 chipset – For those who want to integrate our awesome Ultimate GPS module into their own projects, we now have the raw sub-module available. Don’t be fooled by it’s small size, this is a very sensitive, high quality GPS module with all the extras you could want and more at under 6 grams! (read more)


998Each Friday is PiDay here at Adafruit, be sure to check out our posts, tutorials and new Raspberry Pi related products. Have you tried the new “Adafruit Raspberry Pi Educational Linux Distro”? It’s our tweaked distribution for teaching electronics using the Raspberry Pi. But wait, there’s more! Try our new Raspberry Pi WebIDE! The easiest way to learn programming on a Raspberry Pi.

We now have Raspberry Pi Model B with 512MB RAM in stock and shipping now!

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