HardLabs

Circuit design

fennhelloworld·circuit-design·layouts/phoenix_sensor_node.net

This repository ships a schematic but no board layout.

About the Circuit design PCB

Circuit design is an open source ESP32 PCB design by fennhelloworld, published on GitHub. It is a board, with 13 components from 11 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N16R8, from the ESP32 family. Other key parts include the BME280, ICM-42688-P, AMS1117-3.3 and LM2596-5.0. By type, the board carries 5 ICs, 4 capacitors, 2 resistors, 1 connector and 1 inductor.

It belongs with the sensors designs in this gallery.

From the project

Circuit design and simulation with KiCad SKiDL ngspice, AI-assisted via Claude Code and Codex

Circuit design & simulation with KiCad/SKiDL/ngspice, AI-assisted via Claude Code & Codex.

This repository implements a programmatic circuit design workflow using Python-based tools for schematic generation, SPICE simulation, and KiCad format output. The approach treats circuit design as code — enabling version control, parameterization, and AI-assisted design iteration.

Main components on the Circuit design

ESP32-S3-WROOM-1-N16R8BME280ICM-42688-PAMS1117-3.3LM2596-5.0

Circuit design bill of materials (BOM)

13 components, 11 distinct parts.

QtyPartRefs
1
ESP32-S3-WROOM-1-N16R8
U1
1
BME280
U2
1
ICM-42688-P
U3
1
AMS1117-3.3
U4
1
LM2596-5.0
U5
1
GH1.25-6P
J1
1
33uH
L1
1
100uF
C1
1
22uF
C2
2
100nF
C3, C4
2
4.7K
R1, R2

Circuit design design files

The KiCad project lives in the fennhelloworld/circuit-design repository on GitHub; these links point at the commit this page was built from.

Circuit design: common questions

What microcontroller does the Circuit design use?

The Circuit design is built around the ESP32-S3-WROOM-1-N16R8, from the ESP32 family.

How many components are on the Circuit design?

13 components, from 11 distinct parts. The full bill of materials is listed on this page.

Where can I download the Circuit design design files?

From the fennhelloworld/circuit-design repository on GitHub, which has a netlist; the links under Design files point to each one.

Can I use the Circuit design design in my own project?

The repository has no license, so all rights stay with fennhelloworld. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Circuit design 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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