4 layers64 × 56 mm
Alec sensor
eshelton328/forge
Hardware design monorepo with software-grade CI/CD. KiCad PCB projects with automated ERC/DRC, multi-fab rule validation, schematic & BOM checks, and auto-generated board documentation.
100 parts
4 layers64 × 56 mm
Esp32s3-devkit-5v
eshelton328/forgeHardware design monorepo with software-grade CI/CD. KiCad PCB projects with automated ERC/DRC, multi-fab rule validation, schematic & BOM checks, and auto-generated board documentation.
- Size
- 64 × 56 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 124
- Nets
- 88
- Pads
- 421
- Tracks, vias
- 3,022, 219
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 25 Apr 2026
- Updated
- 4 Oct 2026
Overview
Esp32s3-devkit-5v is an open-source printed circuit board by eshelton328, from the eshelton328/forge repository on GitHub. It is a 4-layer board of 64 × 56 mm with 124 parts on 88 nets, routed with 3,022 tracks and 219 vias.
It is built around the ESP32-S3-WROOM-1-N16, TPS63070RNMR and RV-3028-C7, with the SN74LVC1T45DBVRE4, USBLC6-2SC6 and MMBT3904 among its other parts. Its parts include 48 resistors, 34 capacitors, 8 ICs, 7 transistors and 7 switches. It belongs with the ESP32 boards of this library.
Main components
11
ESP32-S3-WROOM-1-N16
SMD,25.5x18mm-103.5dBm -40℃~+85℃ 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 On-board PCB Antenna UART、SPI、I2C、GPIO、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
TPS63070RNMR
VQFN-15-HR(2.5x3)-40℃~+125℃@(TJ) 1 2.4MHz 2.5V~9V 2A 2V~16V 50uA Adjustable Buck-Boost Buck-Boost Built-in Yes VQFN-15-HR(2.5x3) DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
RV-3028-C7
DFN-8(1.5x3.2)DFN-8(1.5x3.2) Real Time Clocks ROHSMicro CrystalReal Time Clocks
SN74LVC1T45DBVRE4
SOT-23-6-40℃~+85℃ 1 1.65V~5.5V 1.65V~5.5V Bidirectional Level translator Power-off protection、Output enable high-impedance Push-Pull、Tri-State SOT-23-6 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level ShiftersUSBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
RT0402BRD0710KL
0402-55℃~+155℃ 10kΩ 50V 62.5mW Thin Film Resistor ±0.1% ±25ppm/℃ 0402 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface MountAO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
XFL4020-152MEC
SMD,4x4mm1.5uH 14.4mΩ 4.6A 9.1A Magnetic Shielded Inductor ±20% SMD,4x4mm Power Inductors ROHSCoilcraftPower InductorsRT0402BRD0733KL
0402-55℃~+155℃ 33kΩ 50V 62.5mW Thin Film Resistor ±0.1% ±25ppm/℃ 0402 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface Mount
MSK12C02
SMD,8x2.8mm-20℃~+70℃ 1.4mm 10000 times 12V 2.8mm 50mA 8mm SMD(SMT) Tab SPDT Surface Mount, Right Angle SMD,8x2.8mm Slide Switches ROHSSHOU HANSlide Switches
README
boards/alec-front/README.mdALEC front PCB
24 × 10 mm front board with Omron B3U-1000P battery-check switch and Wuerth 150141M173100 common-anode RGB LED. Two copper layers, 1.6 mm thickness. J1 faces inward on B.Cu. These are actual routed boards fitted to the v4.2 enclosure, with physical tolerance/assembly verification still pending.
Connector side · Schematic PDF · Native schematic · Native PCB · BOM
See the harness contract and test report. Pullups, debounce capacitors, 100 Ω button series resistors and RGB resistors live on the main board. Do not connect this board directly to an unprotected ESP32 input in place of the defined main-board interface.
Board Images
Auto-generated on merge to main.
Schematic
PCB 3D Views
| Top | Bottom |
|---|---|
 |  |
Download populated 3D model (GLB) — open in Blender or a glTF viewer.
Parts
124| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 0.1µF | Capacitor_SMD:C_0402_1005Metric | C4, C12, C18, C20, C22, C23, C24, C25, C28, C29, C30, C32, C33 |
| 12 | 10kΩ | Resistor_SMD:R_0402_1005Metric | R3, R7, R12, R13, R18, R22, R24, R25, R26, R27, R31, R33 |
| 10 | 100kΩ | Resistor_SMD:R_0402_1005Metric | R1, R6, R10, R19, R20, R21, R23, R32, R36, R39 |
| 6 | 22µF | Capacitor_SMD:C_1206_3216Metric | C6, C7, C8, C14, C15, C16 |
| 5 | 10µF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C9, C10, C27 |
| 4 | 10µF | Capacitor_SMD:C_0603_1608Metric | C3, C5, C11, C13 |
| 4 | 4.7kΩ | Resistor_SMD:R_0402_1005Metric | R16, R17, R37, R38 |
| 4 | M3 | MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 4 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q3, Q4, Q5, Q7 |
| 3 | 100k | Resistor_SMD:R_0402_1005Metric | R40, R45, R47 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R43, R46, R49 |
| 3 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q6 |
| 2 | 1.5µH | TPS63070:IND_XFL4020-152MEC | L1, L2 |
| 2 | 100µF | Capacitor_SMD:C_1206_3216Metric | C21, C26 |
| 2 | 150Ω | Resistor_SMD:R_0402_1005Metric | R29, R30 |
| 2 | 22Ω | Resistor_SMD:R_0402_1005Metric | R34, R35 |
| 2 | 47k | Resistor_SMD:R_0402_1005Metric | R42, R44 |
| 2 | 5.1kΩ | Resistor_SMD:R_0402_1005Metric | R14, R15 |
| 2 | TPS63070RNMR | TPS63070:TPS63070 | U1, U2 |
| 1 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C34 |
| 1 | 130kΩ | Resistor_SMD:R_0402_1005Metric | R9 |
| 1 | 150141M173100 | LED_SMD:LED_RGB_Wuerth-PLCC4_3.2x2.8mm_150141M173100 | D2 |
| 1 | 150kΩ | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 1M | Resistor_SMD:R_0402_1005Metric | R41 |
| 1 | 1kΩ | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | 1µF | Capacitor_SMD:C_0402_1005Metric | C19 |
| 1 | 1µF | Capacitor_SMD:C_0603_1608Metric | C31 |
| 1 | 22µF | Capacitor_SMD:C_0805_2012Metric | C17 |
| 1 | 330Ω | Resistor_SMD:R_0402_1005Metric | R28 |
| 1 | 33k | Resistor_SMD:R_0402_1005Metric | R48 |
| 1 | 3v3 | TestPoint_Pad_D1.0mm | TP3 |
| 1 | 470kΩ | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 5v | TestPoint_Pad_D1.0mm | TP4 |
| 1 | 680kΩ | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | BATTERY | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW7 |
| 1 | BOOT | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW3 |
| 1 | Conn_01x02_Pin | Connector_JST:JST_PH_B2B-PH-SM4-TB_1x02-1MP_P2.00mm_Vertical | J1 |
| 1 | Conn_01x02_Pin | Board:JST_PH_Speaker_Overhang | J3 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | EN_3V3 | TestPoint_Pad_D1.0mm | TP7 |
| 1 | ESP32-S3-WROOM-1-N16 | Board:ESP32-S3-WROOM-1_Overhang | U3 |
| 1 | GND | TestPoint_Pad_D1.0mm | TP1 |
| 1 | GPIO13 | TestPoint_Pad_D1.0mm | TP6 |
| 1 | GPIO15 | TestPoint_Pad_D1.0mm | TP5 |
| 1 | GPIO18 | TestPoint_Pad_D1.0mm | TP8 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | MAX98357A | Package_DFN_QFN:TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U6 |
| 1 | MODE | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW5 |
| 1 | MSK12C02 | Button_Switch_SMD:SW_SPDT_Shouhan_MSK12C02 | SW1 |
| 1 | PFET | TestPoint_Pad_D1.0mm | TP2 |
| 1 | RESET | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 1 | RV-3028-C7 | Package_SON:MicroCrystal_C7_SON-8_1.5x3.2mm_P0.9mm | U5 |
| 1 | SN74LVC1T45DBVR | Package_TO_SOT_SMD:SOT-23-6 | U8 |
| 1 | SN74LVC2G66DCUR | Package_SO:VSSOP-8_2.3x2mm_P0.5mm | U7 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U4 |
| 1 | USB_C_Receptacle_USB2.0_16P | Board:USB_C_HRO_Overhang | J2 |
| 1 | VOL+ | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW6 |
| 1 | VOL- | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW4 |
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Questions
How big is the Esp32s3-devkit-5v PCB?
It measures 64 × 56 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Esp32s3-devkit-5v use?
124 parts, built around the ESP32-S3-WROOM-1-N16, TPS63070RNMR, RV-3028-C7 and SN74LVC1T45DBVRE4. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Esp32s3-devkit-5v KiCad files?
From the eshelton328/forge repository on GitHub, at the commit this page was made from: the board is boards/esp32s3-devkit-5v/esp32s3-devkit-5v.kicad_pcb and its schematic boards/alec-controls/alec-controls.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Esp32s3-devkit-5v design in my own project?
Its repository states no licence, so its author keeps all rights: ask eshelton328 before reusing the design.