2 layers120 × 100 mm
Usb pd pico controller
flummer/sao-wall
Design for a SAO display PCB, power and control board
64 parts2CC-BY-SA-4.0
2 layers92 × 50 mm
PCB Design made in KiCad for my automatic syringe pump project
- Size
- 92 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 65
- Nets
- 74
- Pads
- 303
- Tracks, vias
- 407, 106
- Pours
- 19
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 17 Apr 2026
- Updated
- 7 May 2026
Overview
Hw1 is an open-source printed circuit board by stanciugabriel, from the stanciugabriel/overture-pcb repository on GitHub. It is a 2-layer board of 92 × 50 mm with 65 parts on 74 nets, routed with 407 tracks and 106 vias.
It is built around the ESP32-C6-WROOM-1-N8, TPS54308DDCT and USBLC6-2SC6, with the ESDA25P35-1U1M, STL6P3LLH6 and ESDA25W among its other parts. Its parts include 20 resistors, 10 capacitors, 6 switches, 5 ICs and 4 diodes. It belongs with the ESP32 and RISC-V boards of this library.
Main components
6
ESP32-C6-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -99.2dBm 2.4GHz 20.5dBm 382mA 3V~3.6V 78mA ESP32-C6 On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
TPS54308DDCT
TSOT-23-6-40℃~+125℃@(TJ) 1 300uA 350kHz 3A 4.5V~28V Adjustable Buck Buck Built-in Yes TSOT-23-6 DC-DC Converters ROHSTexas InstrumentsDC-DC ConvertersUSBLC6-2SC6
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)
ESDA25P35-1U1M
DFN1610-2-55℃~+150℃ 1 1.4kW@8/20us 200nA 22V 24.6V 35A@8/20us 41V IEC 61000-4-2 TVS Unidirectional DFN1610-2 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
STL6P3LLH6
PowerFLAT-8(3.3x3.3)1 P-Channel 1.45nF 120pF 12nC@24V 1V 2.9W 30V 30mΩ@10V 6A PowerFLAT-8(3.3x3.3) MOSFETs ROHSSTMicroelectronicsMOSFETs
ESDA25W
SOT-323-3L-40℃~+125℃ 15A 1uA 2 24V 25V 25V 400W 65pF ESD IEC 61000-4-2 Unidirectional SOT-323-3L ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
README
README.mdOverture PCB
Overture is a custom ESP32-C6 control board designed to drive a NEMA 17 stepper motor while handling NFC reading, a small display, and physical user inputs. Everything is powered through a single USB-C Power Delivery connection.
Hardware Specs
- Microcontroller: ESP32-C6-WROOM-1
- Motor Driver: TMC2208/TMC2209 setup driving a JST-XH port, sized for a NEMA 17 stepper.
- Peripheral Headers: Broken out pins for an ST7789 TFT screen, a PN532 NFC module, 3 push buttons, and a rotary encoder.
- Power Delivery: Uses an STUSB4500 PD controller to negotiate 20V directly from a USB-C wall adapter.
- Power Regulation: A TPS54308DDCT buck converter steps the 20V down to 3.3V (up to 2A max) to power the ESP32 and logic peripherals.
- Programming: Features a secondary USB-C port dedicated strictly to flashing and serial output.
Power and Flashing
The board uses a dual USB-C port design to separate power and data.
To power the motor and board, plug a compatible USB-C PD charger into the main power port. The STUSB4500 handles the 20V negotiation automatically.
To flash the ESP32, use the secondary USB-C port. Note that the primary power port does not route data lines to the ESP32 and will not show up as a COM port on your machine.
Exports
The exports folder contains all the file for production:
- hw1-bom.csv - is the Bill of Materials (formatted for JLCPCB)
- hw1-top-pos.csv - is the Components Position File for PCB-A (formatted for JLCPCB)
- Gerber_Archived.zip - has all the Gerber and Drill files needed for production
Parts
65| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 10k | Resistor_SMD:R_0603_1608Metric | R6, R14, R15, R16, R18, R19 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3mm_Pad_Via | H1, H2, H3, H4 |
| 4 | TestPoint | TestPoint:TestPoint_Pad_D3.0mm | TP_3V3, TP_20V1, TP1, TP4 |
| 2 | 100K | Resistor_SMD:R_0603_1608Metric | R10, R55 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R53, R54 |
| 2 | 100nF | Capacitor_SMD:C_0402_1005Metric | C6, C10 |
| 2 | 1k | Resistor_SMD:R_1206_3216Metric | R2, R4 |
| 2 | 33uF | Capacitor_SMD:C_0805_2012Metric | C7, C8 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R7, R8 |
| 2 | ESDA25P35-1U1M | hw1_footprint:TVS_ESDA25P35-1U1M | D11, D50 |
| 2 | STL6P3LLH6 | hw1_footprint:mosfetty | Q1, Q2 |
| 2 | SW_Push | hw1_footprint:SW_TS-1088-AR02016 | SW5, SW6 |
| 2 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1, J2 |
| 2 | ~ | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP5, JP6 |
| 1 | 100 | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 100k | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 22K | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 22k | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 3.3uH | hw1_footprint:IND-SMD_L7.2-W6.6_GPSR07X0 | L1 |
| 1 | 4.7k | Resistor_SMD:R_0603_1608Metric | R21 |
| 1 | 4.7uf | Capacitor_SMD:C_1206_3216Metric | C50 |
| 1 | 470 | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 6.8uF | Capacitor_SMD:C_1206_3216Metric | C5 |
| 1 | ESDA25W | hw1_footprint:SOT65P210X110-3N | D3 |
| 1 | ESP32-C6-WROOM-1 | hw1_footprint:ESP32-C6-WROOM-1_edit | U6 |
| 1 | RotaryEncoder_Switch | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | SW1 |
| 1 | STUSB4500QTR | hw1_footprint:QFN-24-1EP_4x4mm_P0.5mm_EP2.65x2.65mm | U2 |
| 1 | SW_Back | Connector_PinHeader_2.54mm:PinHeader_2x01_P2.54mm_Vertical | SW2 |
| 1 | SW_Bolus | Connector_PinHeader_2.54mm:PinHeader_2x01_P2.54mm_Vertical | SW3 |
| 1 | SW_Settings | Connector_PinHeader_2.54mm:PinHeader_2x01_P2.54mm_Vertical | SW4 |
| 1 | Schottky | Diode_SMD:D_SOD-323 | D4 |
| 1 | Stepper_Motor | Connector_JST:JST_XH_S4B-XH-A_1x04_P2.50mm_Horizontal | M1 |
| 1 | TPS54308DDCT | hw1_footprint:SOT95P280X110-6N | U5 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U4 |
| 1 | ~ | hw1_footprint:TMC2208_edit | U1 |
| 1 | ~ | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | PN532-Module1 |
| 1 | ~ | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | ST7789-Display1 |
The 63 most common of 65 parts.
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Questions
How big is the Hw1 PCB?
It measures 92 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hw1 use?
65 parts, built around the ESP32-C6-WROOM-1-N8, TPS54308DDCT, USBLC6-2SC6 and ESDA25P35-1U1M. 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 Hw1 KiCad files?
From the stanciugabriel/overture-pcb repository on GitHub, at the commit this page was made from: the board is hw1.kicad_pcb and its schematic hw1-backups/hw1-2026-04-24_154134/hw1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hw1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask stanciugabriel before reusing the design.