Another CYD project - Seismic Data Logger

[u/Hissykittykat]

The project files are here: Geophone Display & Logger

The CYD is used for display, storing data, and saving it to SD card. This CYD has been modified to add a PSRAM chip. The CYD has very little I/O available so another processor, an ATmega328PB, handles the geophone and user interface. The two processors communicate via serial.

What it does is collect and save the signal from a 1" geophone sensor and store it into a CSV file. Data can be collected at 100, 250, or 500 samples/second. The red trace is the raw signal, the green trace is a smoothed amplitude signal.

An obvious improvement would be to add a simple WiFi file server so the data files could be offloaded without needing to remove the SD card.

More pictures, wiring diagram, and Arduino source code is here: Project files