Unoq power shield
Unoq power shield is an open source PCB design by ramalamadingdong: a 4-layer, 53.3 × 68.6 mm board with 49 components (43 distinct parts). It is built around the TPS54331DDAR, INA226AIDGSR. Filed under dev boards & breakouts and displays & leds and power & battery.
Design a PCB end to end with an agent: CSV source of truth, idempotent build passes, containerized KiCad+Freerouting, and checks that run on the fab output.
Status: UNBUILT. No physical board of this design has been fabricated or powered on yet. Until one has, treat this as a reference for exercising the pipeline, not a verified design.
The design has passed its pre-order gates (2026-08-30): routed with 0 unconnected and 0 clearance violations across 5 identical DRC runs, validategerbers` 14/0, ERC clean, every BOM line in stock. The 17 residual DRC items are all form-factor or courtyard-graze artifacts, individually explained in the ledger in rev-1-plan.md. Passing gates is not the same as working hardware — the UNBUILT warning above stands…
Built around
Parts list
49 components, 43 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS54331DDAR | TI_SO-PowerPAD-8 | U1 |
| 1 | INA226AIDGSR | MSOP-10_3x3mm_P0.5mm | U2 |
| 4 | BSS138LT1G | SOT-23 | Q1, Q2, Q3, Q4 |
| 1 | AO4407A | SOIC-8_3.9x4.9mm_P1.27mm | Q5 |
| 1 | KF301-5.0-2P VIN 7-24V | KF301_5.0_2P | J1 |
| 1 | KF301-5.0-2P 5V OUT | KF301_5.0_2P | J2 |
| 2 | SM04B-SRSS-TB Qwiic | JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J3, J4 |
| 1 | 5V IO | PinHeader_1x06_P2.54mm_Vertical | J5 |
| 1 | UNO PWR | PinHeader_1x08_P2.54mm_Vertical | J10 |
| 1 | UNO ANALOG | PinHeader_1x06_P2.54mm_Vertical | J11 |
| 1 | UNO D0-D7 | PinHeader_1x08_P2.54mm_Vertical | J12 |
| 1 | UNO D8-SCL | PinHeader_1x10_P2.54mm_Vertical | J13 |
| 1 | SS34 | D_SMA | D1 |
| 1 | BZT52C12 | D_SOD-123 | D2 |
| 1 | XL-1615RGBC-RF | XL1615RGBC | D3 |
| 1 | SWPA6045S100MT 10uH | SWPA6045S | L1 |
| 2 | C51205 4.7uF 50V | C_1206_3216Metric | C1, C2 |
| 1 | C14663 C3 | C_0603_1608Metric | C3 |
| 1 | C14663 C4 | C_0603_1608Metric | C4 |
| 1 | C57112 C5 | C_0603_1608Metric | C5 |
Show 23 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C1588 C6 | C_0603_1608Metric | C6 |
| 1 | C14858 C7 | C_0603_1608Metric | C7 |
| 2 | C12891 22uF 25V | C_1206_3216Metric | C8, C9 |
| 1 | C14663 C10 | C_0603_1608Metric | C10 |
| 1 | C5375464 10mR 3W | R_2512_6332Metric | R1 |
| 1 | C25804 R2 | R_0603_1608Metric | R2 |
| 1 | C25808 R3 | R_0603_1608Metric | R3 |
| 1 | C4216 R4 | R_0603_1608Metric | R4 |
| 1 | C22967 R5 | R_0603_1608Metric | R5 |
| 1 | C23186 R6 | R_0603_1608Metric | R6 |
| 1 | C23352 R7 | R_0603_1608Metric | R7 |
| 1 | C25804 R8 | R_0603_1608Metric | R8 |
| 1 | C25804 R9 | R_0603_1608Metric | R9 |
| 1 | C25804 R10 | R_0603_1608Metric | R10 |
| 1 | C25804 R11 | R_0603_1608Metric | R11 |
| 1 | C25804 R12 | R_0603_1608Metric | R12 |
| 1 | C25804 R13 | R_0603_1608Metric | R13 |
| 1 | C25804 R14 | R_0603_1608Metric | R14 |
| 1 | C25804 R15 | R_0603_1608Metric | R15 |
| 1 | C25804 R16 | R_0603_1608Metric | R16 |
| 1 | C23138 R17 | R_0603_1608Metric | R17 |
| 1 | C23138 R18 | R_0603_1608Metric | R18 |
| 1 | C23138 R19 | R_0603_1608Metric | R19 |
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