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firesteelrainlast Monday at 12:38 PM1 replyview on HN

You can buy custom RP2040 boards and attach GPS. My projects are paired with an Si5351A and a 0.5 ppm TCXO. GPS gets you 1PPS


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crotelast Monday at 2:21 PM

Yes, but the goal was "accurate capture of timer count on input pulse", not "get a 1PPS pulse somewhere on your board".

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