Retired Mixed-signal Integrated Circuit Design Engineer. Ex analog guru. Raspberry Pi fanatic.
16-channel 24-bit ADC plus 16-channel digital I/O. The ADC takes data from room temperature thermistor sensors, outdoor sensors, and boiler temperature. The digital I/O drives solid-state relays that activate zone valves for the in-floor heat.
A sensitive seismometer using a capacitive displacement sensor, a capacitance to digital sensor, and a Raspberry Pi.