The relay board has a built-in error that must be found and fixed before use, turning learning into a real task with practical skills.
Bug in Circuit is an ESP32-based IoT relay board designed by Anu Electronics to introduce students to embedded systems through active engagement. The board comes in 2, 4, and 6-channel relay variants and includes standard IoT-ready features found in professional-grade hardware.
What sets this kit apart is a built-in, intentional fault in the circuit. Instead of working out-of-the-box like most plug-and-play kits, Bug in Circuit requires students to identify and correct this error before using the board. This transforms a simple task into an engineering challenge.
The design supports hands-on debugging. Students test components, interpret circuit behavior, read datasheets, and use logic to fix the fault. These are technical steps that match the troubleshooting processes used during product design and testing.
This approach gives students early exposure to workflows used in industry—from problem analysis to solution checking. Instead of just assembling kits, learners engage with core parts of electronics work like diagnostics and validation. This helps shift learning from theory to practice.
The experience builds confidence and persistence. By solving a fault on their own, students gain a better understanding of the subject and a mindset focused on problem-solving. These are useful traits for work in technical areas.
Bug in Circuit fits into different learning setups—engineering colleges, STEM labs, maker spaces, and online classrooms. Its modular and low-cost structure allows for scaling, making electronics training more widely available in both urban and rural settings.
Some of the key features of the kit include:
- ESP32 chip with built-in Wi-Fi for IoT projects
- 12V relays that can be controlled using GPIO pins
- Can connect to cloud platforms like Arduino IoT Cloud, Alexa, and Google Assistant
- Can be controlled using IR remote and RF remote
- Extra GPIO pins to easily connect sensors
Ultimately, this kit delivers more than just technical education. It helps learners think like engineers, preparing them for real-world challenges in embedded systems, robotics, and IoT development.
