0xWheatyz
7e8784a06e
Adds Purchase column to bom.csv with verified sourcing links and a companion BOM.md with grouped tables, combo-kit recommendations, and critical pre-order notes. Flagged during research: - U1 package description was wrong (3.5x3.5mm); TPS61088 RHL is actually VQFN-20 4.5x3.5mm. KiCad footprint is correct, only the BOM description was off. - PCB silkscreen shows TPS61088QRHLRQ1 (auto Q1) but the non-Q1 TPS61088RHLR is a drop-in substitute with the same RHL pinout and is ~5x cheaper at LCSC. - Pinout verified: schematic pins 1/3/4/5/6/7/8/9/11/12/15 match the TI datasheet RHL pinout. Combo kits collapse R1-R5 (E96 sample book), C6/C8/C9 (0805 ceramic kit), and C4/C5/C10/C11 (22uF 1206 50-pack) into single orders. Constraint: ESP32 module excluded per user — sourced separately. Constraint: L1 must handle >=10A; no-name AliExpress inductors avoided. Directive: If swapping L1 to TDK SPM10065 from Bourns SRP1265, verify KiCad footprint matches before ordering (10.5x10mm vs 12.6x12.6mm). Confidence: high Scope-risk: narrow Not-tested: actual delivery/fitment of recommended AliExpress parts
