Posted in Arduino Hacks, home hacks Tagged blinds, home automation, RGB LED, servo, temperature, temperature sensor, temperature-control, window blinds ...

After the temperature sensors detect deviance from the set point, or upon SMS instruction, the Freeduino will crank up the heat through a 5V relay attached to the home’s boiler.

With a fortnight’s struggle, I completed the design of 4 mA to 20mA, two-wire temperature transmitter using a platinum resistance temperature detector (RTD) sensor, as shown in Figure 1. Figure 1 A ...

As you might expect, the two-current sensors are sensitive to series resistance so are best used for local temperature measurement based on the integrated diode.

Built your very own parking sensors for the car using nothing more than an Arduino board and cheap components you can find online ...