pico-quorum (jmcpheron)ECADConfidence: Medium

DESIGN.md wrongly said U5 blocks 5 V on the plug's VBUS, but the AP22653 only blocks reverse current while disabled, and when enabled it limits reverse current to 0.32 A typical, so the fix adds a Schottky diode D5.

Impact Analysis

Persona

Electrical Engineer

Team Size Impact

5x Multiplier

Prototype Delay

3 Days

Est. Annual Cost

$30,000

1 user · 1 month240 min
Rest of team960 min
Rest of year13,200 min

monthly_minutes × 12 × team_multiplier ÷ 60 × $75/hr = $30k/yr

$75/hr assumed rate.

Annual team-minutes decomposed from the reported monthly inputs.

Evidence & Sources

1 Sources

jmcpheron/pico-quorum PR #90: picoquorum-key rev B: D5 blocks 5 V on the key port, U5 on or off

github.com

→

Analyst Notes

From the Grok pain-radar digests, Oct 26-27 2026 (Oct 26 12:41 PM ET through Oct 27 7:41 AM ET digests plus the Haitch editions). Verified live 2026-10-27: issue/PR/thread read; title and state confirmed.