A portable magnetic field mapping device has been developed using an ESP32 microcontroller, dual EMS100 Fluxgate sensors, and an Arduino Nano for low-level data processing. This modular hardware architecture demonstrates an efficient way for developers to handle real-time sensor integration and data visualization on integrated touchscreens. While primarily serving geological or specialized investigative fields, the project provides a blueprint for building high-precision environmental monitoring tools that support local heatmap rendering and SD card data export.
Read the full article at Hackaday
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