4 layers244.5 × 91 mm
2 layers127.2 × 76.1 mm
PCB draft1
Pathfinder-Purdue/Pathfinder-PCB- Size
- 127.2 × 76.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 99
- Nets
- 88
- Pads
- 439
- Tracks, vias
- 531, 113
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 13 Feb 2026
- Updated
- 22 Feb 2026
Overview
PCB draft1 is an open-source printed circuit board by Pathfinder-Purdue, from the Pathfinder-Purdue/Pathfinder-PCB repository on GitHub. It is a 2-layer board of 127.2 × 76.1 mm with 99 parts on 88 nets, routed with 531 tracks and 113 vias.
It is built around the ESP32-S3-WROOM-1-N8, AP63203WU and SP3011-06UTG, with the SAM-M8Q-0, ESDS304 and LESD5D5.0CT1G among its other parts. Its parts include 31 diodes, 23 resistors, 12 connectors, 10 capacitors and 5 ICs. It belongs with the ESP32 boards of this library.
Main components
8
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
AP63203WU
TSOT-23-6-40℃~+85℃@(TA) 1 1.1MHz 22uA 2A 3.3V 3.8V~32V Buck Built-in Fixed Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting、EMI optimization (spread spectrum) Step-down type Yes TSOT-23-6 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
SP3011-06UTG
UDFN-14(1.4x3.5)0.4pF 100nA 12.5V 3A@8/20us 6 6V ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Unidirectional UDFN-14(1.4x3.5) ESD and Surge Protection (TVS/ESD) ROHSLittelfuseESD And Surge Protection (TVS/ESD)
SAM-M8Q-0
SMD-20P,15x15mmUncategorisedu-blox
ESDS304
4ch, 2.3pF Data-Line Surge and ESD Protection Diode ArrayTexas InstrumentsUncategorised
LESD5D5.0CT1G
SOD-523-55℃~+150℃ 100W 12pF 16V 1uA 5V 7A 7V Bidirectional ESD IEC 61000-4-2 SOD-523 ESD and Surge Protection (TVS/ESD) ROHSGOODWORKUncategorised
SK6812MINI-E
SMD-40℃~+85℃ 0.6mA 1.78mm 120mcd~240mcd 120° 160mcd~320mcd 1kHz 2.8mm 2000V 3.2mm 3.7V~5.5V 460nm~470nm 515nm~525nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Semi-transparent lens SMD RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
SMF6V0A
SOD-123SOD-123 ESD and Surge Protection (TVS/ESD) ROHSFUXINSEMIUncategorised
Parts
99| Qty | Value | Footprint | References |
|---|---|---|---|
| 22 | SMF5V0A | Diode_SMD:D_SMF | D12, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D30, D31, D32, D33, D34 +6 |
| 11 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8, R10, R11, R12, R14, R15, R16, R17, R18, R19, R20 |
| 8 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP7, TP8, TP9, TP10, TP11, TP12 |
| 5 | NMOS | LocalComponents:SOT95P280X125-3N | Q5, Q6, Q7, Q8, Q9 |
| 3 | 0.1uF/50(10%)(NC) | LocalComponents:CAPC2012X95N_ | C1, C2, C11 |
| 3 | LED | LED_SMD:LED_0201_0603Metric | D6, D35, D37 |
| 2 | 2.2k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R31, R32 |
| 2 | 22 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R29, R30 |
| 2 | 22 uf | LocalComponents:CAPC3216X180N | C5, C15 |
| 2 | 4.7k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R13, R21 |
| 2 | 470 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R28 |
| 2 | 5.1K(1%) | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R27, R34 |
| 2 | ESDS304 | Package_TO_SOT_SMD:SOT-23-5 | D1, D2 |
| 2 | LESD5D5.0CT1G | LocalComponents:ESD5V0LBTP | D11, D16 |
| 2 | SP3011-06UTG | LocalComponents:SON14_SP3011-06UTG_LTF | U4, U5 |
| 2 | SW_Push | LocalComponents:ESB335_PAN | SW1, SW2 |
| 1 | 1.0 uF | LocalComponents:CAPC1608X90N_ | C12 |
| 1 | 10 uf | LocalComponents:CAPC1608X90N | C3 |
| 1 | 100nf | LocalComponents:CAPC2012X95N | C4 |
| 1 | 10uF/25V(20%) | LocalComponents:CAPC1608X100N | C8 |
| 1 | 1M Ohm | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R35 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R24 |
| 1 | 1uF/16V(10%) | LocalComponents:CAPC1005X55N | C9 |
| 1 | 3.9 uH | LocalComponents:IND_NRS5030T3R3MMGJ_TAY | L1 |
| 1 | 5V_Input | Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J7 |
| 1 | AP63203WU | Package_TO_SOT_SMD:TSOT-23-6 | U1 |
| 1 | ESP32-S3-WROOM-1 | RF_Module:ESP32-S3-WROOM-1 | U3 |
| 1 | IMU_Conn | Connector_JST:JST_XH_B10B-XH-A_1x10_P2.50mm_Vertical | J21 |
| 1 | Motor_1_Conn | Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J8 |
| 1 | Motor_2_Conn | Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J6 |
| 1 | Motor_3_Conn | Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J5 |
| 1 | Motor_4_Conn | Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J2 |
| 1 | Motor_5_Conn | Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J14 |
| 1 | RaspPi_Conn | Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J13 |
| 1 | SAM-M8Q | RF_GPS:ublox_SAM-M8Q | U2 |
| 1 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D14 |
| 1 | SMF6V0A | Diode_SMD:D_SMF | D10 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP1 |
| 1 | SolderJumper_3_Open | Jumper:SolderJumper-3_P1.3mm_Open_Pad1.0x1.5mm_NumberLabels | JP2 |
| 1 | TOF_Connectors | Connector_JST:JST_XH_B6B-XH-A_1x06_P2.50mm_Vertical | J19 |
| 1 | Test_Conns | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J16 |
| 1 | UART_Bridge_TXRX | Connector_JST:JST_XH_B2B-XH-AM_1x02_P2.50mm_Vertical | J15 |
| 1 | USB_B_Micro | LocalComponents:CONN_UB-MC5BR3-SDWP604-4S-TF_JST | J3 |
Questions
How big is the PCB draft1 PCB?
It measures 127.2 × 76.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PCB draft1 use?
99 parts, built around the ESP32-S3-WROOM-1-N8, AP63203WU, SP3011-06UTG and SAM-M8Q-0. 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 PCB draft1 KiCad files?
From the Pathfinder-Purdue/Pathfinder-PCB repository on GitHub, at the commit this page was made from: the board is PCB_draft1.kicad_pcb and its schematic BuckConverters.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PCB draft1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Pathfinder-Purdue before reusing the design.
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