Author: paulb

  • Squirrels

    Squirrels

    Waterloo has many excellent squirrels. Sitting in the garden or a park, it is well possible to see 5 or even 10 of them at a time. They are nimble and elegant, their paths lead them over roofs and fences, up and down trees and even through gutters. Unlike their European cousins, the Waterloo squirrels…

  • How a room temperature sensor leaks your location

    One of my Raspberry Pi lies on the floor of my living room and, besides other tasks, it has a few sensors attached to it that measure room temperature. The house is heated via a central ventilation system, where the furnace is controlled by a thermostat that is set to 19°C. So I didn’t expect…