BioNose-Edge

An olfactory front end for gas sensors on microcontrollers, in no-std Rust with no heap allocation, and an unusual case of a project whose headline is that the fly circuit lost. On 13,535 unseen samples from the UCI gas sensor drift set, spanning 36 months of real sensor aging, a FlyWire-derived layer of 2,048 Kenyon cells reaches 52.4 percent while the same layer with shuffled wiring reaches 53.3 and the authors' own cosine tracker reaches 67.4. Their reading is that the sparse binary code discards geometry a floating-point unit could keep, so the mushroom body stays only for ablation.

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#electronic-nose#gas-sensor#kenyon-cells#embedded#no-std#negative-result#flywire