Free Elektor Article: Arduino Temperature Recorder
Using the tiny Arduino Uno, you can build all manner of really neat small projects at modest cost. This one is a simple temperature recorder that shows on a display screen the values measured during the past 24 hours. Of particular note is the software, which manages all of the operations without recourse to external libraries.
The recorder described in this article measures the temperature over the course of a day and displays the readings on a graphic display screen. When a new measured value is added, the displayed curve is shifted one pixel to the left, so that the oldest value disappears and the newest reading appears. The interval between measurements can be changed easily to record more rapid temperature changes, for example in process control applications.
The project software, with comments, can be downloaded by clicking on DOWNLOAD ATTACHMENT below.