4 layers90 × 90 mm
Power distribution
menloresearch/asimov-1
v1 of Asimov, an open-source humanoid robot
25 parts1.4kCERN-OHL-S-2.0
4 layers125.2 × 71.7 mm
Sea Wall Schematic 3
CrystalCoasts/pcb-filesPCB files for reproducing circuit easily
- Size
- 125.2 × 71.7 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 75
- Pads
- 196
- Tracks, vias
- 814, 172
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 4 Dec 2024
- Updated
- 29 Apr 2025
Overview
Sea Wall Schematic 3 is an open-source printed circuit board by CrystalCoasts, from the CrystalCoasts/pcb-files repository on GitHub. It is a 4-layer board of 125.2 × 71.7 mm with 25 parts on 75 nets, routed with 814 tracks and 172 vias.
Its parts include 10 ICs, 8 connectors, 5 resistors and 2 transistors.
README
README.mdSmart Sea Wall PCB Files
Repo for ESP32 Smart Sea Wall PCB and Hardware.
Table of Contents
Introduction
We designed and created a PCB for easy recreation of the device. The sensors are plug and play, allowing the user to easily service the device. The file was desgined in KiCAD and printed using JLC PCB.
Getting Started
- Gather all components stated in the BOM.
- Order the PCB through JLCPCB using the already created gerber zip file.
- Follow the soldering and installation instructions in the Instalation section.
- Test device with the embedded-code repository.
Bill of Materials
As far as materials go, many you may not be able to find headers the exact size for what you need. In that case, just find the closest one to it and cut it down to size (e.g. cut a 6 pin header to 5 pins), or use multiple to make up the size you need.
- (8) 3-pin header
- (4) SMA male connector
- (2) 16-pin header
- (2) 8-pin header
- (1) 5-pin header
- (2) 8-pin terminals (2.54 pitch)
- (2) 3-pin terminals (2.54 pitch)
- (3) 4.7k resistors (7.62 horizontal length)
- (2) 1k resistors (7.62 horizontal length)
- (2) bjt transistors (2n2222 or similar)
- (1) mcp23017 I2C IO extender - link
- (1) Boost converter - link
- (1) I2C ADC - link
- (1) Lilygo ESP32 T-7000G - link
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | Conn_Coaxial | Connector_Coaxial:SMA_Amphenol_901-144_Vertical | J1, J2, J3, J4 |
| 4 | ~ | seawall:atlas-sensors | U3, U4, U5, U6 |
| 2 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3, R4 |
| 2 | 4.7k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2 |
| 2 | Conn_01x03 | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J6, J7 |
| 2 | NPN | Package_TO_SOT_THT:TO-92 | Q1, Q2 |
| 1 | 4.7K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R8 |
| 1 | Conn_01x05 | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J8 |
| 1 | Conn_02x08_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J5 |
| 1 | MCP23017_SP | Package_DIP:DIP-28_W7.62mm | U8 |
| 1 | ~ | Lilygo-T7000G:T7000G | U1 |
| 1 | ~ | seawall:isolation circuit | U2 |
| 1 | ~ | seawall:OV5640 | U7 |
| 1 | ~ | seawall:boostconverter | U11 |
| 1 | ~ | seawall:AD1015 | U10 |
Questions
How big is the Sea Wall Schematic 3 PCB?
It measures 125.2 × 71.7 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Sea Wall Schematic 3 use?
25 parts. 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 Sea Wall Schematic 3 KiCad files?
From the CrystalCoasts/pcb-files repository on GitHub, at the commit this page was made from: the board is Sea Wall Schematic 3.kicad_pcb and its schematic Sea Wall Schematic 3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sea Wall Schematic 3 design in my own project?
Its repository states no licence, so its author keeps all rights: ask CrystalCoasts before reusing the design.
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