Fully Featured Audio DSP Firmware for the Raspberry Pi Pico
23 by BoingBoomTschak | 3 comments on Hacker News.
Monday, 27 April 2026
Sunday, 26 April 2026
New top story on Hacker News: Show HN: A free ESG stock screener that publishes its losses and methodology
Show HN: A free ESG stock screener that publishes its losses and methodology
4 by irldexter | 2 comments on Hacker News.
Hey HN, JSS(JumpstartSignal) is a free, ESG-filtered daily stock screener. I built it after some really badly-timed quantum computing stock buys, so I felt I needed to learn more about systematic, longer-horizon approaches and the underlying technicals instead of chasing themes. Three things about it that might be of interest: 1. Methodology is fully documented at https://ift.tt/fwRBPpW 5-stage pipeline, 54 signals tested individually plus 1,836 combinations evaluated, walk-forward validation across 25 hold periods. Nothing hand-tuned to a single backtest window. 2. Many wins, misses, and losses are published as case studies e.g. https://ift.tt/706jY8G walks through the 32 times the system flagged NVDA starting at $5.44 in 2018. https://ift.tt/w32EjHM shows a -49% loss, and https://ift.tt/dPbGSZM explains why the system never flagged Tesla (it passed Stages 1 and 2 on 207 days but only peaked at 20/100 in scoring vs the 70 needed for OPPORTUNITY tier). https://ift.tt/k4hGwcE also shows the 10 best entries alongside the 10 worst. 3. A genetic algorithm picked the signal weights, but constrained to maintain alpha across multiple market regimes (otherwise it overfits to a single bull market). The constraint dropped some "best in backtest" configurations that only worked 2018-2021. Topline: 2012-2025 backtest at SPOTLIGHT + OPPORTUNITY tier produced +163% alpha vs SPY (results page has the per-trade breakdown). Daily watchlist emailed free; reports + results + case studies are publicly browsable without signup. Happy to take questions about methodology, what the system gets wrong, or why specific tickers landed where they did.
4 by irldexter | 2 comments on Hacker News.
Hey HN, JSS(JumpstartSignal) is a free, ESG-filtered daily stock screener. I built it after some really badly-timed quantum computing stock buys, so I felt I needed to learn more about systematic, longer-horizon approaches and the underlying technicals instead of chasing themes. Three things about it that might be of interest: 1. Methodology is fully documented at https://ift.tt/fwRBPpW 5-stage pipeline, 54 signals tested individually plus 1,836 combinations evaluated, walk-forward validation across 25 hold periods. Nothing hand-tuned to a single backtest window. 2. Many wins, misses, and losses are published as case studies e.g. https://ift.tt/706jY8G walks through the 32 times the system flagged NVDA starting at $5.44 in 2018. https://ift.tt/w32EjHM shows a -49% loss, and https://ift.tt/dPbGSZM explains why the system never flagged Tesla (it passed Stages 1 and 2 on 207 days but only peaked at 20/100 in scoring vs the 70 needed for OPPORTUNITY tier). https://ift.tt/k4hGwcE also shows the 10 best entries alongside the 10 worst. 3. A genetic algorithm picked the signal weights, but constrained to maintain alpha across multiple market regimes (otherwise it overfits to a single bull market). The constraint dropped some "best in backtest" configurations that only worked 2018-2021. Topline: 2012-2025 backtest at SPOTLIGHT + OPPORTUNITY tier produced +163% alpha vs SPY (results page has the per-trade breakdown). Daily watchlist emailed free; reports + results + case studies are publicly browsable without signup. Happy to take questions about methodology, what the system gets wrong, or why specific tickers landed where they did.
Saturday, 25 April 2026
Friday, 24 April 2026
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