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A comment on Simple streetlight hack could protect astronomy from urban light pollution. Parent comment

Re:Simple streetlight hack could protect astronomy from urba... by globular-toast on Saturday November 18, 2023 @05:46PM (#38325513)
Dimming is usually done by pulse width modulation. So you can definitely get them to blink at the same frequency, you just change the pulse width.
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Re:Simple streetlight hack could protect astronomy from urba... by rsaxvc on Saturday November 18, 2023 @09:17PM (#38327760)
They need phase locked too. Edit: article says they're using GPS, probably using PWM-aligned-to-PPS.
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