HN

A Loopmasters tutorial titled "Building a TB-303 from Scratch" that appears to be a guide for creating a DIY TB-303-style bass synthesizer; full article content was not provided so specific steps and coverage cannot be confirmed.

synthesizer diy hardware electronic-music
36 pts 8 comments

Off-topic items

New drone mapping and soil/pollen analysis suggest the Band of Holes on Monte Sierpe (about 5,200 pits) was likely a landscape-scale indigenous trade and accounting system—akin to a giant khipu—used around the 14th century by regional traders and later repurposed by the Inca. The patterning of pits, presence of transported crop residues, and strategic location support use as a visual, communal ledger or marketplace rather than agricultural or water-capture features.

archaeology peru khipu ancient-economy
43 pts 19 comments

NASA’s DART mission crashed into the small asteroid Dimorphos in 2022, and follow-up observations show the impact not only shortened Dimorphos’ 12-hour orbit around its larger companion by 32 minutes but also measurably altered the pair’s orbit around the sun. Stellar occultation timings indicate the heliocentric orbit slowed by about 150 milliseconds (a velocity change >10 micrometers/second), the first confirmed human-caused change to a celestial orbit and a useful data point for planetary defense planning.

planetary-defense asteroids nasa spacecraft
17 pts 7 comments
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