Tuesday, June 16, 2020

The quest to reduce light pollution and bring stars back to Pittsburgh

Article URL: https://www.theverge.com/21286969/stars-astronomy-pittsburgh-city-light-pollution

Comments URL: https://news.ycombinator.com/item?id=23545978

Points: 1

# Comments: 0



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My First PCB: Relay and Gate

Article URL: https://raymii.org/s/blog/My_First_PCB_relay_AND_gate.html Comments URL: https://news.ycombinator.com/item?id=42759880 Points...