Real-time CO2 monitoring without batteries or external power
7 comments
·June 15, 2025nikolayasdf123
dfex
More concerning - can anyone explain why there is such a variation in the results from the DC powered unit vs. the TENG-powered one? The graph at the bottom of the report shows a difference of 30-50ppm between both units when they are sitting side by side on the bench.
zipping1549
I skimmed the original article and it only mentions the graph and says that it's "comparable to DC powered unit". I'm guessing < 100ppm difference is somewhat acceptable?
dfex
You might be right - it's just odd that it's always showing "more" rather than similar amounts.
Also, according to Claude[1] a 50ppm difference is equivalent to around 25 years current atmospheric carbon increase.
* Pre-industrial (1700s): ~280 ppm
* 1958 (when systematic measurements began): ~315 ppm
* 2000: ~370 ppm
* 2015: ~400 ppm (milestone crossed)
* Current: ~420-425 ppm
[1] "What is the normal range for background CO2 concentrations in the air?"
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noisy_boy
Tangential/Spoiler: I came to know about Kaist (Korea Advanced Institute of Science & Technology) in the Netflix series Devil's Plan (season 2) which had two of its students as the top three contestants.
anyone can explain why this is such a big breakthrough?
vibration powered electricity generator is not new, neither is CO2 monitoring. so what's the big deal?