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Soilchord — Geotechnical Acoustic Soil Profiler

jayis1·hardware-design-lab·soilchord/kicad/soilchord.kicad_pcb

Soilchord — Geotechnical Acoustic Soil Profiler PCB layout, top view — open source STM32 board by jayis1

About the Soilchord — Geotechnical Acoustic Soil Profiler PCB

Soilchord — Geotechnical Acoustic Soil Profiler is an open source STM32 PCB design by jayis1, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 6 components from 6 distinct parts.

Its main chip is the STM32L432KCU6, from the STM32 family. Other key parts include the SX1262IMLTRT and MCP6S22. By type, the board carries 3 ICs, 1 diode, 1 capacitor and 1 resistor.

It belongs with the rf & radio and iot & wireless designs in this gallery.

From the project

Full-cycle hardware device designs — each device in its own subfolder with architecture, schematics, PCB layout, and software stack

Author: jayis1 License: MIT Version: 1.0.0 Status: Reference design (hardware + firmware + companion app)

Soilchord is a novel geotechnical instrument that turns a vertical column of soil into a musical instrument — and then listens to it. Inside a slim, waterproof probe are several taut steel wires ("chords"), each anchored at a different depth. A small solenoid actuator plucks each chord on a schedule, and a piezoelectric pickup captures the resulting resonance. The fundamental frequency, harmonic series, and ring-down decay (Q-factor) of each chord are exquisitely sensitive to the…

Main components on the Soilchord — Geotechnical Acoustic Soil Profiler

STM32L432KCU6SX1262IMLTRTMCP6S22

Soilchord — Geotechnical Acoustic Soil Profiler bill of materials (BOM)

6 components, 6 distinct parts.

QtyPartRefs
1
STM32L432KCU6
U1
1
SX1262IMLTRT
U2
1
MCP6S22
U3
1
STATUS
D1
1
10uF
C1
1
4.7k
R1

Soilchord — Geotechnical Acoustic Soil Profiler design files

The KiCad project lives in the jayis1/hardware-design-lab repository on GitHub; these links point at the commit this page was built from.

Soilchord — Geotechnical Acoustic Soil Profiler: common questions

What microcontroller does the Soilchord — Geotechnical Acoustic Soil Profiler use?

The Soilchord — Geotechnical Acoustic Soil Profiler is built around the STM32L432KCU6, from the STM32 family.

How big is the Soilchord — Geotechnical Acoustic Soil Profiler PCB?

The Soilchord — Geotechnical Acoustic Soil Profiler measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Soilchord — Geotechnical Acoustic Soil Profiler?

6 components, from 6 distinct parts. The full bill of materials is listed on this page.

Where can I download the Soilchord — Geotechnical Acoustic Soil Profiler design files?

From the jayis1/hardware-design-lab repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Soilchord — Geotechnical Acoustic Soil Profiler design in my own project?

The repository has no license, so all rights stay with jayis1. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Soilchord — Geotechnical Acoustic Soil Profiler without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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