After many months of work on the hardware part with the Rapsberry Pi, the ADS1262 and the geophon SM24, the seismometer was finally installed in the ground.Hereto, a 50 cm long spike was struk into the soil.Between the spike and… Continue Reading →
Before installing the seismometer in the ground, a housing must be prepared. Here a small waterproof case with a transparent roof was used. The transparent roof is fixed with 4 stainless steel screws.The housing requires some holes for cable glands,… Continue Reading →
After the hardware with the ADC, voltage supply, geophone and termination of the geophone was setup, the hardware was transferred from the breadboard circuit to a prototyping perf board.Even though this is still a very simple and rough construction, far… Continue Reading →
Since the beginning of the project, a very simple circuit has been used to couple the SM24 sensor. It consisted of three 1 kΩ resistors: the one in middle serves as the termination shunt for the SM24, as indicated in… Continue Reading →
In the past, the voltage measurements of the ADS1262 were recorded in a polling loop. A polling loop is the simplest form for performing repeated measurements. The loop reads a measurement and then waits for a certain time, e.g. 2… Continue Reading →
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