Solar Project Rev1 - 2026-07-27 PCB Baseline
About the Solar Project Rev1 - 2026-07-27 PCB Baseline
Solar Project Rev1 - 2026-07-27 PCB Baseline is an open source ESP32 PCB design by Phil-CIA, published on GitHub. It is a 4-layer board measuring 100 × 99.9 mm, with 157 components from 86 distinct parts.
Its main chip is the ESP32_C3_MINI, from the ESP32 family. Other key parts include the STM32G431CBU6, CP2102-GMR, LM5163, LP5912-3.3DRV and LM51772QRHARQ1. By type, the board carries 64 resistors, 51 capacitors, 10 ICs, 9 diodes, 6 switches and 5 connectors.
It belongs with the power & battery designs in this gallery.
From the project
Suggested structure: - schematics/ - pcb/ - bom/ - manufacturing/ - validation/
Suggested structure: - schematics/ - pcb/ - bom/ - manufacturing/ - validation/
Add tool/version notes and board revision history as the project evolves.
- mppt/block-diagram.md - mppt/schematic-exploration-checklist.md - mppt/interface-assumptions.md - mppt/schematic-notes.md - mppt/net-plan.md - mppt/component-shortlist-template.md - mppt/kicad-implementation-checklist.md - mppt/envelope-decision-worksheet.md - mppt/decision-update-template.md - mppt/buck-topology-notes.md - mppt/github-reference-notes.md - mppt/buck-symbol-placement-checklist.md - mppt/pv-input-stage.md -…
Main components on the Solar Project Rev1 - 2026-07-27 PCB Baseline
Solar Project Rev1 - 2026-07-27 PCB Baseline bill of materials (BOM)
157 components, 86 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32G431CBU6 STM32F411CEU6 | QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U1 |
| 1 | ESP32_C3_MINI BSC112N06LD | Infineon_PG-TDSON-8 | U2 |
| 1 | CP2102-GMR SILICON LABS | WQFN-28_L5.0-W5.0-P0.50-BL-EP3.2 | U3 |
| 1 | LM5163 LM5163DDAR | Texas_R-PDSO-G8_EP2.95x4.9mm_Mask2.4x3.1mm_ThermalVias | U4 |
| 1 | LP5912-3.3DRV BSC155N06ND | Infineon_PG-TDSON-8 | U5 |
| 1 | LM51772QRHARQ1 | Texas_RHA0040B_VQFN-40-1EP_6x6mm_P0.5mm_EP4.15x4.15mm | U6 |
| 1 | AHT20 | Humidity sensor | U7 |
| 1 | SSD1306_OLED ~ | 0.96 inOLED display SSD1306 | U8 |
| 1 | LMV393 | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm_ThermalVias | U9 |
| 1 | INA213AIDCKR | SOT-363_SC-70-6 | U10 |
| 4 | CSD18540Q5B IPZ40N | TDSON-8-1 | M1, M2, M3, M4 |
| 1 | BSS138 hongjiacheng | Q_SOT-23 | Q1 |
| 1 | 2N7002K BSS138 hongjiacheng | Q_SOT-23 | Q2 |
| 1 | 2N7002K AO3400A Alpha & Omega Semicon | Q_SOT-23 | Q3 |
| 1 | X49SM8MSD2SC Yangxing Tech | CRYSTAL-SMD_L11.5-W4.8-LS12.7 | X2 |
| 1 | SCREW_TERMINAL_01X02 Solar In | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J1 |
| 1 | USB4105-GF-A | GCT_USB4105-GF-A | J2 |
| 1 | SCREW_TERMINAL_01X02 Battery Bus | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J3 |
| 1 | CONN_01X04 JTAG | PinHeader_1x04_P2.54mm_Vertical_SMD_Pin1Right | J4 |
| 1 | CONN_01X03_SOCKET Fan | PinHeader_1x03_P2.54mm_Vertical | J5 |
Show 66 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 3522-2 Fuse_TD_10A_5x25_63VDC_MIN | Fuseholder_Littelfuse_100_series_5x25mm | F1 |
| 1 | 3522-2 Fuse | Fuseholder_Littelfuse_100_series_5x25mm | F2 |
| 1 | C720477 Tactile Button, 160gf XUNPU | SW_TS-1088-AR02016 | S1 |
| 5 | C318884 Tactile Button, 160gf XKB Connectivity | SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL-2 | SW1, SW2, SW3, SW4, SW5 |
| 2 | 1SMA4742A hongjiacheng | D_DO-214AC(SMA) | D1, D5 |
| 1 | SMBJ60CA hongjiacheng | D_SMB | D2 |
| 1 | USBLC6-2SC6 STMicroelectronics | SOT-23-6 | D3 |
| 3 | 1N5819WS | D_SOD-323 | D4, D6, D7 |
| 1 | WS2812B | LED-SMD_4P-L1.6-W1.5_XL-1615RGBC-WS2812B | D8 |
| 1 | C2297 Yellow Hubei KENTO Elec | D_0805 | D9 |
| 1 | C49308530 1uh | HC3-1R0-R | L2 |
| 1 | C49333024 68uh | L_KOHERelec_MDA7030 | L3 |
| 11 | 100NF 100nF Samsung Electro-Mechanics | C_0805 | C1, C12, C22, C23, C28, C44, C45, C46 +3 |
| 1 | 1UF 1uF Samsung Electro-Mechanics | C_0805 | C2 |
| 1 | 100UF 47uf | CP_Radial_D6.3mm_P2.50mm | C3 |
| 13 | 47uf | CP_Radial_D6.3mm_P2.50mm | C4, C5, C6, C17, C32, C36, C37, C38 +5 |
| 4 | 2.2UF 2.2uF Samsung Electro-Mechanics | C_1206 | C7, C15, C34, C35 |
| 2 | 100NF 2.2uF Samsung Electro-Mechanics | C_1206 | C8, C33 |
| 2 | 2.2NF 2.2nF Samsung Electro-Mechanics | C_0805 | C9, C13 |
| 1 | 47PF 47pF Samsung Electro-Mechanics | C_0805 | C10 |
| 1 | 2.2uF Samsung Electro-Mechanics | C_1206 | C11 |
| 1 | GRM21BR61E226ME44L 100uF Samsung Electro-Mechanics | C_1206 | C14 |
| 1 | 10uf | CP_Elec_6.3x7.7 | C16 |
| 1 | 560UF 560uf | CP_Elec_10x12.6 | C18 |
| 3 | 47UF 47uf | CP_Radial_D6.3mm_P2.50mm | C19, C30, C31 |
| 1 | 180PF 180pf | C_0805 | C20 |
| 1 | 47UF 560uf | CP_Elec_10x12.6 | C21 |
| 1 | 22NF 220nf | C_0805 | C24 |
| 1 | 1.5NF 1.5nf | C_0805 | C25 |
| 1 | 33NF 33nf | C_0805 | C26 |
| 2 | 22UF 22uF Samsung Electro-Mechanics | C_0805 | C27, C29 |
| 2 | 33PF 33pF YAGEO | C_0805 | C49, C50 |
| 3 | 100kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R1, R32, R38 |
| 7 | 10Ω UNI-ROYAL(Uniroyal Elec) | R_0805 | R2, R4, R26, R27, R39, R41, R42 |
| 2 | 76.8K 66.5k | R_0805 | R3, R18 |
| 3 | 4.7kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R5, R44, R45 |
| 2 | 22kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R6, R10 |
| 1 | 430k | R_0805 | R7 |
| 1 | 27kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R8 |
| 1 | 180K 180k | R_0805 | R9 |
| 1 | 240k | R_0805 | R11 |
| 1 | 6.8kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R12 |
| 1 | 1MΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R13 |
| 1 | 330kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R14 |
| 1 | 2kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R15 |
| 1 | 0.001OHMS 0.001ohms | R_2512 Shunt 4 pad resistor | R16 |
| 2 | 5.62K 5.62k | R_0805 | R17, R25 |
| 13 | 10kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R19, R34, R36, R47, R48, R50, R53, R54 +5 |
| 1 | 499K 499kΩ | R_0805 | R20 |
| 1 | 102K 102k | R_0805 | R21 |
| 1 | 0.001OHMS 0.001ohms | R_Shunt_Vishay_WSK2512_6332Metric_T2.66mm | R22 |
| 1 | 75kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R23 |
| 2 | 5.1kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R24, R62 |
| 1 | 51.7K 51.7k | R_0603 | R28 |
| 1 | 20.5K 20.5k | R_0805 | R29 |
| 1 | 40.2K 40.2k | R_0805 | R30 |
| 1 | 2.43K | R_0805 | R31 |
| 1 | 6.49k | R_0805 | R33 |
| 1 | 180kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R35 |
| 3 | RC0603FR-07100KL 100kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R37, R40, R43 |
| 1 | 330Ω UNI-ROYAL(Uniroyal Elec) | R_0805 | R46 |
| 3 | 0Ω UNI-ROYAL(Uniroyal Elec) | R_0805 | R49, R63, R64 |
| 1 | 2.7kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R51 |
| 1 | 1kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R52 |
| 1 | 1.5kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R60 |
| 1 | 20kΩ UNI-ROYAL(Uniroyal Elec) | R_0805 | R61 |
Solar Project Rev1 - 2026-07-27 PCB Baseline design files
The KiCad project lives in the Phil-CIA/Solar-Project-200w repository on GitHub; these links point at the commit this page was built from.
Solar Project Rev1 - 2026-07-27 PCB Baseline: common questions
What microcontroller does the Solar Project Rev1 - 2026-07-27 PCB Baseline use?
The Solar Project Rev1 - 2026-07-27 PCB Baseline is built around the ESP32_C3_MINI, from the ESP32 family.
How big is the Solar Project Rev1 - 2026-07-27 PCB Baseline?
The Solar Project Rev1 - 2026-07-27 PCB Baseline measures 100 × 99.9 mm, has 4 copper layers and is 1.7925 mm thick.
How many components are on the Solar Project Rev1 - 2026-07-27 PCB Baseline?
157 components, from 86 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Solar Project Rev1 - 2026-07-27 PCB Baseline design files?
From the Phil-CIA/Solar-Project-200w repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Solar Project Rev1 - 2026-07-27 PCB Baseline design in my own project?
The repository has no license, so all rights stay with Phil-CIA. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Solar Project Rev1 - 2026-07-27 PCB Baseline without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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