International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 11 | Nov 2025
p-ISSN: 2395-0072
www.irjet.net
Moody: An Emotion-Aware Conversational AI with Arduino- Integrated Emotional Feedback Sangayan Uke, Atharv Timane, Utkarsh Pawar, Urvendrasingh Sisodia, Nikhil Thorat, Suraj Ugale 1 Department of Information Technology, Vishwakarma Institute of Technology (VIT), 666 Upper Indiranagar, Bibwewadi, Pune, Maharashtra, India – 411037 2 Department of Information Technology, Vishwakarma Institute of Technology (VIT), 666 Upper Indiranagar, Bibwewadi, Pune, Maharashtra, India – 411037 3 Department of Information Technology, Vishwakarma Institute of Technology (VIT), 666 Upper Indiranagar, Bibwewadi, Pune, Maharashtra, India – 411037 4 Department of Information Technology, Vishwakarma Institute of Technology (VIT), 666 Upper Indiranagar, Bibwewadi, Pune, Maharashtra, India – 411037 5 Department of Information Technology, Vishwakarma Institute of Technology (VIT), 666 Upper Indiranagar, Bibwewadi, Pune, Maharashtra, India – 411037 6 Department of Information Technology, Vishwakarma Institute of Technology (VIT), 666 Upper Indiranagar, Bibwewadi, Pune, Maharashtra, India – 411037
---------------------------------------------------------------------***--------------------------------------------------------------------Moody uses a mix of technologies like speech recognition, Abstract - In a world where we're constantly plugged into
natural language processing (NLP), and machine learning to detect emotions from your voice and words. It’s built using a powerful emotion detection model (based on the Distil Roberta transformer), and it also talks back using text-to-speech, making the interaction feel natural. All conversations are saved securely in an encrypted local database, so it respects your privacy. One of the coolest features of Moody is the heart rate sensor. By checking your pulse in real time, Moody can tell if you’re feeling anxious or overwhelmed—even if you’re not saying it out loud. If it notices a high heart rate and negative emotions like sadness or anger, it gently suggests calming activities like breathing exercises or offers comforting responses. These small actions can make a big difference when someone is having a tough moment. The system also includes an Arduino setup that responds physically using things like LEDs, buzzers, and vibration motors. For example, a red LED might light up when you’re angry, or a soft vibration might guide you through breathing exercise. This kind of feedback makes Moody more interactive and helpful, especially for users who prefer visual or physical cues. Overall, our goal with Moody is to show how combining AI and simple hardware can create a low-cost, accessible emotional support tool. As first-year students, this project helped us learn how to apply what we’ve studied in a real-world way that could actually help people. In this paper, we’ll explain how we built it, how it works, and why it could be useful for anyone needing a little extra support in their day.
devices and notifications, it's easy to lose sight of our inner selves. While we stay connected to the outside world 24/7, many of us silently struggle with emotional disconnection, often feeling drained, isolated, or unheard. That’s exactly why Moody was created—an AI-powered website built to help you pause, check in with yourself, and feel a little lighter. Moody gently bridges the gap between technology and emotional well-being. It uses a smart combination of real-time heart rate monitoring, Natural Language Processing (NLP), and powerful Python libraries to sense how you're feeling. Whether you’re battling stress, feeling low, or just need a mental boost, Moody offers supportive prompts, soothing messages, and motivational nudges tailored just for you. What makes Moody truly special is its deep respect for your privacy. Every bit of your data— emotional and physiological—is securely encrypted. Nothing is saved or shared, so you can speak your mind freely, knowing your personal space is protected. Moody is more than just a chatbot. It’s a comforting presence, a listening ear, and a quiet reminder that your feelings matter. With Moody, emotional care meets thoughtful technology—right when you need it most.
Key Words: AI (Artificial intelligence), NLP (Natural language processing), Arduino, TTS(Text-to-speechrecognition), CNN (convolutional neural networks)
1.INTRODUCTION With growing awareness about mental health and emotional well-being, many people are now looking for ways to feel supported, especially when professional help isn’t always available. In this project, we introduce “Moody” – a smart virtual assistant designed to understand how you’re feeling, talk to you like a friend, and help you cope when you’re stressed or feeling low.
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Impact Factor value: 8.315
2.LITERATURE REVIEW Emotion-sensing technologies have come under the spotlight in recent years, especially for improving humancomputer interaction using natural language processing. A plethora of methods and types of data (modalities) have been investigated by researchers to detect emotions and
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