Category: Temperature Indicator (With Processing)

When we connect the Temperature Indicator sketch to Processing, the thermistor temperature data from the sketch will be displayed in the Processing IDE Console Monitor, as well as on the main screen of the computer. The layout of this Processing canvas is simple. The graphics consist of two rectangular boxes with fluttering horizontal lines. The fluttering…

After building the Temperature Indicator circuit and checking for wiring errors, it is time to upload the sketch. Example 20-1 sends analog information to the Arduino IDE (integrated development environment) Serial Monitor, and displays a series of numbers based on the thermistor’s change in resistance. It uses the same serial communication technique used in to talk with the Processing…

As shown in Figure 20-1, the breadboard analog circuit is quite simple to build, and requires only a thermistor and a 10KΩ fixed resistor wired in series. Where the two components are tied together, a jumper wire connects between them and pin A3 of the Arduino microcontroller. The Temperature Indicator can be built using the Fritzing wiring diagram…

Figure 20-1. The Temperature Indicator

Here’s an awesome project that allows you to quickly check the temperature of the environment using a few electronic components. This temperature indicator uses a small electronic sensor called a thermistor, which changes its resistance—the way electricity flows through it—depending on the temperature. The electronic components to build this gadget are shown in the Parts List. The Temperature…