OS3-RNode, an RNode-Compatible LoRa Modem on CH32V003

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I built OS3-RNode as a tiny RNode-compatible LoRa modem firmware for CH32V003 + E22-900M22S. It is based on a small deterministic event-driven core, with no scheduler, no threads, and bounded interrupt work. The goal was to make a minimal and auditable transport for Reticulum/NomadNet on very constrained hardware. The article has the architecture notes and a firmware link. Feedback on the event model, failure handling, and interoperability tradeoffs would be useful.

Visit product View on Hacker NewsMar 29, 2026

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best fitHighest predicted score across all platforms for this description.

Product HuntOn track for Day 1 leaderboard · Strong signals: model, tiny, notes · Missing: mac, agents, macos

75%75% predicted probability of success on Product Hunt, based on ML models trained on real launch data.

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38%38% predicted probability of success on TrustMRR, based on ML models trained on real launch data.

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36%36% predicted probability of success on Hacker News, based on ML models trained on real launch data.

nativeThis product was originally launched on this platform.

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30%30% predicted probability of success on AppSumo, based on ML models trained on real launch data.

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22%22% predicted probability of success on Acquire.com, based on ML models trained on real launch data.

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2%2% predicted probability of success on BetaList, based on ML models trained on real launch data.

Incorrect prediction on native model

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