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juanqui / 2026-05-15-power-consumption-audit.md
Created May 16, 2026 19:57

SimpleAir Power Consumption Audit

  • Date: 2026-05-15 local
  • Hardware: SimpleAir RevE powered through the Joulescope JS220 current path from a 3.7 V bench source. The JS220 voltage sense can still report the bench source when the target current path is switched off.
  • Instrument: Joulescope JS220 u/js220/005920, firmware 1.3.0, FPGA 1.3.3, MCP driver 2.1.0
  • Firmware revision: 82f8ae0
  • Scope: current draw and power during cold boot, first SEN66 duty-cycle measurement, post-boot nominal operation, no-RTT power-audit firmware variants, and retained RAM firmware-event tracing
  • Status: Measured and complete with explicit physical limitations

Executive Summary