2 layers104 × 158 mm
2 layers34.3 × 15 mm
SimpleQuakeSensor
dionyself/SimpleQuakeSensorSimple Earthquake Analyzer.
- Size
- 34.3 × 15 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 17
- Nets
- 12
- Pads
- 46
- Tracks, vias
- 39, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 2 Jul 2026
- Updated
- 26 Jul 2026
Overview
SimpleQuakeSensor is an open-source printed circuit board by dionyself, from the dionyself/SimpleQuakeSensor repository on GitHub. It is a 2-layer board of 34.3 × 15 mm with 17 parts on 12 nets, routed with 39 tracks and 0 vias.
It is built around the MMBFJ201. Its parts include 7 capacitors, 7 resistors, 2 connectors and 1 transistor. It belongs with the sensors and measurement boards of this library.
Main components
1README
README.mdSimple Quake Sensor
SimpleQuake Sensor is an Earthquake Analyzer. (Work in Progress)
Useful to capture and analyze Natural EM wave emitions and Earthquake EM emitions.
The circuit works as multi-band (ULF/ELF) receiver
Primary EM waves 0 - 1 kHz (Supported Bands)
- Ultra Low Frequency / Sub-ELF: f < 3 Hz
- Extremely Low Frequency: 3 Hz < f < 1 kHz
Real PCB View (from Kicad 3D viewer)
How to use it?
1 - Assembly the device (gerber files provided )
2 - Connect your device to your audio card / pc using this <> cable
3 - Connect your device's input to ground using 2 probes and a good coaxial cable
4 - Take audio samples as you like: parec raw_sample.raw --file-format=raw ( Linux command )
or
5 - Use your favorite Audio analizer to listen and view the live data jaaa -A -d hw:1
Note: We recommend to use our version Jaaa mod
My Results
I have included images, screenshoots and audio files captured during relevant events:
a) 0 - 1.5 kHz
Comming next
- The development team will be working on a dedicated Audio analizer
Parts
17| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 4.7K | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 1 | 100 nF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 100nf | Capacitor_SMD:C_0805_2012Metric | C6 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | 10M | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 2.2uF | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 220K | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | 220nF | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | 22nF | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 470R | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 470nF | Capacitor_SMD:C_0805_2012Metric | C7 |
| 1 | 47K | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | 47nF | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | AudioPlug4 | Connector_Audio:Plug_3.5mm_CUI_SP-3541 | J1 |
| 1 | ELF (<30Hz) Input | Connector_Coaxial:SMA_Molex_73251-1153_EdgeMount_Horizontal | J2 |
| 1 | MMBFJ201 | Package_TO_SOT_SMD:SOT-23-3 | Q1 |
Questions
How big is the SimpleQuakeSensor PCB?
It measures 34.3 × 15 mm and has 2 copper layers, 1.6 mm thick.
What parts does the SimpleQuakeSensor use?
17 parts, built around the MMBFJ201. 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 SimpleQuakeSensor KiCad files?
From the dionyself/SimpleQuakeSensor repository on GitHub, at the commit this page was made from: the board is SimpleQuakeSensor.kicad_pcb and its schematic SimpleQuakeSensor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the SimpleQuakeSensor design in my own project?
Its repository states no licence, so its author keeps all rights: ask dionyself before reusing the design.
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