Boards (renatorgr)ECADConfidence: Medium

A JLCPCB BOM check on a 24-relay ESP32 board found parts with no LCSC number, parts in shortfall, and two wrong parts: C6116 is a 74LVT244ADB, not the ULN2803A needed, and C23182 is 47 ohm, not 49.9 ohm, on the Ethernet terminations. KiCad DRC said 0 errors and 0 unconnected the whole time, because DRC never looks at what the LCSC field points to.

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

renatorgr/Boards PR #72: Relay24_ESP32: fix wrong LCSC numbers and fill the missing ones

github.com

→

Analyst Notes

From the Grok pain-radar digests, Oct 28-29 2026 (Oct 28 8:41 AM ET through Oct 29 early-morning Haitch editions). Verified live 2026-10-29: issue/PR read; title and state confirmed.