VoiceSwitch: Smartphone Voice-Controlled Home Automation using Arduino Uno and HC-05 Bluetooth with Acknowledgement Feedback
Volume: 15 - Issue: 08 - Date: 30-08-2026
Approved ISSN: 2278-1412
Published Id: IJAECESTU512 | Page No.: 105-109
Author: Dakksheya Iyer
Co- Author:
Abstract:-Switching household appliances by hand is inconvenient for elderly people and persons with limited mobility, while commercial voice assistants need costly hubs, compatible appliances and a permanent internet connection. This paper presents VoiceSwitch, a low-cost voice-controlled home automation system in which an Android application converts the user's speech to text and sends a short command code over Bluetooth to an Arduino Uno, which drives a four-channel relay board and returns a text acknowledgement to the phone. The design uses only open hardware and a MIT App Inventor application, and its total component cost is about INR 1,400. The prototype was tested with five commands, 50 trials per command in a quiet room (35 dB) and in a noisy room (65 dB). Average recognition accuracy was 96.4% in the quiet room and 91.2% in the noisy room, the mean end-to-end response time was 0.91 s, and the Bluetooth link was reliable (at least 94% success) up to 10 m indoors. Error analysis shows that most failures arise from speech-to-text mistakes rather than from the Arduino or the wireless link.
Key Words:-Home automation, voice control, Arduino Uno, HC-05, Bluetooth, relay module, Android, speech recognition, assistive technology
Area:-Science & Technology
DOI Member: 135.95.513
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