Vernier Software and Technology
Vernier Software & Technology
Arduino and Vernier Sensors

Add a Display For Temperature Readings

It is fairly easy and inexpensive to add a 4-digit display to an Arduino for displaying sensor readings. This project is for displaying temperature readings from either our Stainless Steel Temperature Probe or Surface Temperature Sensor, but it can easily be modified to display other sensor readings.

For a display, we suggest using the Sparkfun 7-Segment Serial Display. They come in several different colors with order codes of COM-11441, COM11443, COM11629, and COM-11442. The good thing about these displays is that they can be connected and controlled using only 3 wires. The only connections needed are:

Arduino Display
+5V +
9 RX

We recommend connecting the display via the BTD 2 socket of either the SparkFun Interface Shield or a BTD connector on a breadboard. The only three wire connections you need to wire are:

  • DIO3 (closest to the tab) to the RX line on the display (Arduino pin 9)
  • GND (second closest to the tab) to GND on the display
  • 5V (third from the tab) to power on the display

With this wiring and using the BTD 2 connector you are using Arduino pin 9 for the display RX control line. That is the way all our sketches using displays are written.



Vernier Engineering Contest

Vernier recognizes instructors for creative uses of Vernier sensors to introduce engineering concepts and/or practices. Vernier Engineering Award »

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