PC-Based Temperature and Humidity Recorder with USB Connectivity

Abstract

In this paper, a PC-based temperature and humidity recorder with USB connectivity is presented. It is developed around a well-known 8-bit PIC18F4550 microcontroller from Microchip Technologies and features intuitive application software developed in the LabVIEW graphical programming environment. The recorder has a temperature range of 0°C to 60°C, a humidity range of 10% RH to 95% RH and a maximum display rate of 1 s. The instrument is compatible with Windows 7/Vista/XP and connects to the PC via a simple USB cable. The device is mainly intended for indoor environmental monitoring.