ALMA · Peltier Smart Wall

A thermoelectric wall panel: HOT (sun) face vs COOL (indoor) face. Watch the temperature gap ΔT drive three honest functions — (a) SEEBECK power generation, (b) PELTIER active cooling, (c) a ΔT-threshold NEURON. Drag the sun & the pump current. All numbers are physically grounded. 100% our own Canvas 2D, no libraries.
100% OURS · CANVAS 2D HONEST NUMBERS
Peltier neuron
Seebeck V0 mV
Threshold— mV
Staterest
STYLIZED: a comparator on the panel's own Seebeck voltage — self-powered spike when ΔT crosses threshold. Refractory after firing. Honest analog of a leaky integrate-&-fire cell.
Panel telemetry (per 40×40mm tile)
Hot face Th0 °C
Cool face Tc0 °C
ΔT (hot ↔ indoor)0 K
(a) Seebeck generation
Power / tile0 mW
Efficiency η0 %
Wall (10×10)0 W
(b) Peltier cooling
Pump current I0.0 A
Heat moved Qc0 W
Elec. in We0 W
COP = Qc/We—
high at tiny lift · <1 under load
ΔT history
Honest verdict

GOOD: a self-powered single-sensor node — the ΔT itself powers one tiny reading + one spike. A real, useful, honest learning artifact.

NOT: viable as city cooling — Peltier COP is high only at a tiny lift; push real cooling and it crashes below 1 (burns more grid power than heat removed). Or as compute infrastructure (mW-scale gen, ~2–6% efficient).

For cooling a city → PV panels + hydroponics/evaporative + shade. Thermoelectrics stay a niche.

Controls
Sun 620 W/m²
Pump I 0.0 A
Thresh 35 K
Drag Sun to heat the hot face · drag Pump I to run active Peltier cooling (watch COP crash below 1) · Thresh sets the neuron's ΔT firing point.
Orbit: drag the panel. Scroll: zoom.